const boom = require("boom");
const bcrypt = require('bcrypt');
const jwt = require('jsonwebtoken'); 
const customJwtAuth = require("../customAuthJwt");
const { Deparments } = require("../models/Department");
const { Install, SensorStock, SensorQuotation, Order, Insensors, MasterSlaveData, ElectrictyWorkPictures, PlumbingWorkPictures, MaterialRecievedPictures } = require("../models/store");
const { Counter, User } = require("../models/User");
const { IotData, Tank } = require("../models/tanks");
const moment = require('moment-timezone');

const fastify = require("fastify")({
  logger: true,
  //disableRequestLogging: true,
  genReqId(req) {
    // you get access to the req here if you need it - must be a synchronous function
    return uuidv4();
  },
});


const generateTeamMemberId = async () => {
    var result = await Counter.findOneAndUpdate(
      { _id: 'teamMemberId_id' },
      { $inc: { seq: 1 } },
      { upsert: true, new: true }
    );
  
    return result.seq;
  };


exports.createTeamMember = async (request, reply) => {
    try {
      const { departmentId, firstName, phone, password,email,alternativePhone ,status} = request.body;
  
      // Check if installation exists
      const installation = await Deparments.findOne({ departmentId });
  
      if (!installation) {
        return reply.status(404).send({
          simplydata: {
            error: true,
            message: "Installation not found",
          },
        });
      }
  
      // Check if phone number already exists in the team
      const existingMember = installation.team_member.team_member.find(
        (member) => member.phone === phone
      );
  
      if (existingMember) {
        return reply.status(400).send({
          simplydata: {
            error: true,
            message: "Phone number already exists in the team",
          },
        });
      }
  
      // Hash password
      const hashedPassword = await bcrypt.hash(password, 10);

      const c_id = await generateTeamMemberId();
      const teamMemberId = `AWTM${c_id}`;
      // Create new team member
      const newTeamMember = {
        teamMemberId,
        firstName,
        phone,
        email,
        alternativePhone,
        installationTeamMemId: departmentId,
        password: hashedPassword,
        status,
      };
  
      // Add to team members array
      installation.team_member.team_member.push(newTeamMember);
      await installation.save();
  
      return reply.send({
        simplydata: {
          error: false,
          message: "Team member created successfully",
          teamMemberId: newTeamMember.teamMemberId,
        },
      });
  
    } catch (err) {
      console.error("Error creating team member:", err);
      reply.status(500).send({
        simplydata: {
          error: true,
          message: "Internal server error",
        },
      });
    }
  };
  

  exports.getTeamMembers = async (request, reply) => {
    try {
      const { departmentId } = request.params; // ✅ Get departmentId from request params
  
      // ✅ Find the department using departmentId
      const department = await Deparments.findOne({ departmentId });
  
      if (!department) {
        return reply.status(404).send({
          simplydata: {
            error: true,
            message: "Department not found",
          },
        });
      }
  
      // ✅ Extract team members from department schema
      const teamMembers = department.team_member.team_member;
  
      return reply.send({
        simplydata: {
          error: false,
          message: "Team members retrieved successfully",
          teamMembers, // ✅ Return the list of team members
        },
      });
  
    } catch (err) {
      console.error("Error fetching team members:", err);
      reply.status(500).send({
        simplydata: {
          error: true,
          message: "Internal server error",
        },
      });
    }
  };

//   exports.assignTeamMemberToQuotation = async (request, reply) => {
//     try {
//         const { installationId } = request.params; // Get installationId from URL params
//         const { teamMemberId } = request.body; // Get teamMemberId from request body

//         if (!teamMemberId) {
//             return reply.status(400).send({
//                 simplydata: {
//                     error: true,
//                     message: "teamMemberId is required",
//                 },
//             });
//         }

//         // Find installation by installationId
//         const installation = await Install.findOne({ installationId });

//         if (!installation) {
//             return reply.status(404).send({
//                 simplydata: {
//                     error: true,
//                     message: "Installation not found",
//                 },
//             });
//         }

//         // Extract team members list
//         const teamMembers = installation.team_member.team_member;

//         // Check if provided teamMemberId exists in the installation's team
//         const assignedTeamMember = teamMembers.find(member => member.teamMemberId === teamMemberId);

//         if (!assignedTeamMember) {
//             return reply.status(404).send({
//                 simplydata: {
//                     error: true,
//                     message: "Team member not found in this installation",
//                 },
//             });
//         }

//         // Here, you would save the assigned team member to the quotation (modify as needed)
//         const quotation = {
//             installationId,
//             assignedTeamMember
//         };

//         return reply.send({
//             simplydata: {
//                 error: false,
//                 message: "Team member assigned to quotation successfully",
//                 quotation
//             },
//         });

//     } catch (err) {
//         console.error("Error assigning team member to quotation:", err);
//         reply.status(500).send({
//             simplydata: {
//                 error: true,
//                 message: "Internal server error",
//             },
//         });
//     }
// };

exports.assignTeamMemberToQuotation = async (request, reply) => {
  try {
    const { installationId } = request.params;
    const { teamMemberId, quotationId } = request.body;

    if (!teamMemberId || !quotationId) {
      return reply.status(400).send({
        simplydata: {
          error: true,
          message: "Both teamMemberId and quotationId are required",
        },
      });
    }

    // 🔹 Find installation by installationId
    const installation = await Install.findOne({ installationId });

    if (!installation) {
      return reply.status(404).send({
        simplydata: {
          error: true,
          message: "Installation not found",
        },
      });
    }

    // 🔹 Extract team members list
    const teamMembers = installation.team_member?.team_member || [];

    // 🔹 Check if the provided teamMemberId exists in the installation's team
    const assignedTeamMember = teamMembers.find(
      (member) => member.teamMemberId === teamMemberId
    );

    if (!assignedTeamMember) {
      return reply.status(404).send({
        simplydata: {
          error: true,
          message: "Team member not found in this installation",
        },
      });
    }

    // 🔹 Find or create the quotation for the given installationId
    let quotation = await Order.findOne({ installationId, quatationId: quotationId });

    if (!quotation) {
      quotation = new Order({
        installationId,
        quatationId: quotationId,
        assignedTeamMembers: [], // Ensure assignedTeamMembers array is initialized
        quatation_status: "Pending", // Default status when created
      });
    }

    // 🔹 Assign the team member to the quotation
    if (!quotation.assignedTeamMembers) {
      quotation.assignedTeamMembers = [];
    }

    if (!quotation.assignedTeamMembers.includes(teamMemberId)) {
      quotation.assignedTeamMembers.push(teamMemberId);
    }

    // 🔹 Update order status when a team member is assigned
    quotation.quatation_status = "Assigned"; // Update status

    // 🔹 Save the updated quotation in the Order schema
    await quotation.save();

    // 🔹 Update Installation schema with quotationId
    installation.quatationId = quotationId;
    await installation.save();

    return reply.send({
      simplydata: {
        error: false,
        message: "Team member assigned to quotation successfully",
        quotation,
      },
    });

  } catch (err) {
    console.error("Error assigning team member to quotation:", err);
    reply.status(500).send({
      simplydata: {
        error: true,
        message: "Internal server error",
      },
    });
  }
};

  exports.getAllInstallers = async (request, reply) => {
    try {
      const { departmentName } = request.params; // Get installationId from request params
  
      // Check if installation exists
      const installationList = await Deparments.find({ departmentName });
  
      if (!installationList) {
        return reply.status(404).send({
          simplydata: {
            error: true,
            message: "Installation not found",
          },
        });
      }
  
     
  
      return reply.send({
        simplydata: {
          error: false,
          installationList, // Return the list of team members
        },
      });
  
    } catch (err) {
      console.error("Error fetching team members:", err);
      reply.status(500).send({
        simplydata: {
          error: true,
          message: "Internal server error",
        },
      });
    }
  };
  
  exports.editTeamMember = async (request, reply) => {
    try {
      const { installationId, teamMemberId } = request.params;
      const updateData = request.body;
  
      // Find the installation
      const installation = await Install.findOne({ installationId });
  
      if (!installation) {
        return reply.status(404).send({
          simplydata: {
            error: true,
            message: "Installation not found",
          },
        });
      }
  
      // Find the team member
      let teamMember = installation.team_member.team_member.find(
        (member) => member.teamMemberId === teamMemberId
      );
  
      if (!teamMember) {
        return reply.status(404).send({
          simplydata: {
            error: true,
            message: "Team member not found",
          },
        });
      }
  
      // Update fields
      Object.assign(teamMember, updateData);
  
      // Save changes
      await installation.markModified("team_member.team_member");
      await installation.save();
  
      return reply.send({
        simplydata: {
          error: false,
          message: "Team member updated successfully",
        },
      });
  
    } catch (err) {
      console.error("Error updating team member:", err);
      reply.status(500).send({
        simplydata: {
          error: true,
          message: "Internal server error",
        },
      });
    }
  };

  exports.deleteTeamMember = async (request, reply) => {
    try {
      const { installationId, teamMemberId } = request.params;
  
      // Find the installation
      const installation = await Install.findOne({ installationId });
  
      if (!installation) {
        return reply.status(404).send({
          simplydata: {
            error: true,
            message: "Installation not found",
          },
        });
      }
  
      // Find index of the team member
      const memberIndex = installation.team_member.team_member.findIndex(
        (member) => member.teamMemberId === teamMemberId
      );
  
      if (memberIndex === -1) {
        return reply.status(404).send({
          simplydata: {
            error: true,
            message: "Team member not found",
          },
        });
      }
  
      // Remove the team member from the array
      installation.team_member.team_member.splice(memberIndex, 1);
  
      // Save changes
      await installation.markModified("team_member.team_member");
      await installation.save();
  
      return reply.send({
        simplydata: {
          error: false,
          message: "Team member deleted successfully",
        },
      });
  
    } catch (err) {
      console.error("Error deleting team member:", err);
      reply.status(500).send({
        simplydata: {
          error: true,
          message: "Internal server error",
        },
      });
    }
  };
  

  exports.getQuotationsByInstallationId = async (request, reply) => {
    try {
      const { installationId } = request.params;
  
      if (!installationId) {
        return reply.status(400).send({
          simplydata: {
            error: true,
            message: "Installation ID is required",
          },
        });
      }
  
      // 🔹 Fetch quotations based on installationId
      const quotations = await Order.find({ installationId });
  
      if (!quotations || quotations.length === 0) {
        return reply.status(404).send({
          simplydata: {
            error: true,
            message: "No quotations found for this installation ID",
          },
        });
      }
  
      return reply.send({
        simplydata: {
          error: false,
          message: "Quotations fetched successfully",
          quotations,
        },
      });
    } catch (err) {
      console.error("Error fetching quotations:", err);
      reply.status(500).send({
        simplydata: {
          error: true,
          message: "Internal server error",
        },
      });
    }
  };
  
  exports.getQuotationsByInstallationAndTeamMember = async (request, reply) => {
    try {
      const { installationId, teamMemberId } = request.params;
  
      if (!installationId || !teamMemberId) {
        return reply.status(400).send({
          simplydata: {
            error: true,
            message: "Both installationId and teamMemberId are required",
          },
        });
      }
  
      // 🔹 Fetch quotations where installationId matches and teamMemberId is assigned
      const quotations = await Order.find({
        installationId,
        assignedTeamMembers: teamMemberId,
      });
  
      if (!quotations || quotations.length === 0) {
        return reply.status(404).send({
          simplydata: {
            error: true,
            message: "No quotations found for this installation and team member",
          },
        });
      }
  
      return reply.send({
        simplydata: {
          error: false,
          message: "Quotations fetched successfully",
          quotations,
        },
      });
    } catch (err) {
      console.error("Error fetching quotations:", err);
      reply.status(500).send({
        simplydata: {
          error: true,
          message: "Internal server error",
        },
      });
    }
  };

  exports.getDepartmentByFirstName = async (req, reply) => {
    try {
      let { firstName } = req.params;
  
      if (!firstName) {
        return reply.status(400).send({
          simplydata: { error: true, message: "firstName is required" },
        });
      }
  
      // Trim and convert to lowercase
      firstName = firstName.trim().toLowerCase();
      console.log("Searching for firstName:", firstName); // Debugging log
  
      // Search for the department with case-insensitive and space-tolerant regex
      const department = await Deparments.findOne({
        firstName: { $regex: `^\\s*${firstName}\\s*$`, $options: "i" }
      }).lean();
  
      console.log("Department found:", department); // Debugging log
  
      if (!department) {
        return reply.status(404).send({
          simplydata: { error: true, message: "Department not found" },
        });
      }
  
      return reply.send({
        simplydata: {
          error: false,
          message: "Department details fetched successfully",
          firstName: department.firstName,
          phone: department.phone,
        },
      });
  
    } catch (err) {
      console.error("Error fetching department details:", err);
      return reply.status(500).send({
        simplydata: { error: true, message: "Internal server error" },
      });
    }
  };

 // const moment = require('moment-timezone');

  exports.getByHardwareId = async (req, reply) => {
    try {
      const { hardwareId } = req.params;
  
      if (!hardwareId) {
        return reply.status(400).send({ error: "hardwareId is required" });
      }
  
      console.log("Fetching details for hardwareId:", hardwareId);
  
      const iotData = await IotData.find({ hardwareId })
        .sort({ date: -1 })
        .limit(3)
        .lean();
  
      if (!iotData || iotData.length === 0) {
        return reply.send({ status_code: 404, message: "IoT Data not found", data: null });
      }
  
      const latestRecord = iotData[0];
  
      const indiaTime = moment.tz(latestRecord.date, "Asia/Kolkata");
      const connected_gsm_date = indiaTime.format("YYYY-MM-DD");
      const connected_gsm_time = indiaTime.format("HH:mm:ss");
  
      const now = moment.tz("Asia/Kolkata");
      const diffInMinutes = now.diff(indiaTime, "minutes");
      const isGSMConnected = diffInMinutes <= 1;
      const gsmStatus = isGSMConnected ? "connected" : "disconnected";
  
      // ✅ Step 1: Update Insensors with GSM date/time/status
      await Insensors.findOneAndUpdate(
        { connected_to: hardwareId },
        {
          $set: {
            connected_gsm_date,
            connected_gsm_time,
            connected_status: gsmStatus
          }
        },
        { new: true }
      );
  
      // ✅ Step 2: Annotate tanks with LoRa connection status based on tank date
      const tanksWithConnectionStatus = latestRecord.tanks.map(tank => {
        const tankMoment = moment.tz(tank.date, "Asia/Kolkata");
        const tankDiff = now.diff(tankMoment, "minutes");
  
        return {
          ...tank,
          connected_status: tankDiff <= 1 ? "connected" : "disconnected"
        };
      });
  
      // ✅ Step 3: Response
      return reply.send({
        status_code: 200,
        message: "Success",
        data: {
          hardwareId,
          gsm_connected_status: gsmStatus,
          gsmStatus: isGSMConnected ? "GSM Connected" : "GSM Not Connected",
          connected_gsm_date,
          connected_gsm_time,
          tanks: tanksWithConnectionStatus,
          date: latestRecord.date,
          time: latestRecord.time,
        }
      });
  
    } catch (err) {
      console.error("Error in getByHardwareId:", err);
      return reply.status(500).send({ error: "Internal Server Error" });
    }
  };
  
  
  
  
  

  exports.getByHardwareAndTankId = async (req, reply) => {
    try {
      const { hardwareId, tankhardwareId } = req.params;
  
      if (!hardwareId || !tankhardwareId) {
        return reply.status(400).send({ error: "Both hardwareId and tankhardwareId are required" });
      }
  
      console.log("Fetching tank data for:", { hardwareId, tankhardwareId });
  
      const latestData = await IotData.findOne({ hardwareId })
        .sort({ date: -1 })
        .lean();
  
      if (!latestData || !Array.isArray(latestData.tanks)) {
        return reply.code(404).send({ message: "No data found for given hardwareId and tankhardwareId" });
      }
  
      // Step 1: Check GSM Connection - if data is fresh within 1 minute
      const now = new Date();
      const dataDate = new Date(latestData.date);
      const diffInMs = now - dataDate;
      const isGSMConnected = diffInMs <= 60000; // 60 seconds
  
      // Step 2: Find the matching tank
      const matchedTank = latestData.tanks.find(tank => tank.tankhardwareId === tankhardwareId);
  
      if (!matchedTank) {
        return reply.code(404).send({ message: "Tank not found in latest record" });
      }
  
      // Step 3: Determine LoRa connection status
      const tankHeight = parseFloat(matchedTank.tankHeight || "0");
      const isLoraConnected = isGSMConnected && tankHeight > 0;
  
      const matchedTankDateObj = new Date(matchedTank.date);
      const day = String(matchedTankDateObj.getDate()).padStart(2, '0');
      const month = String(matchedTankDateObj.getMonth() + 1).padStart(2, '0');
      const year = matchedTankDateObj.getFullYear();
      const formattedDate = `${day}-${month}-${year}`;
  
      // Add formatted date to matchedTank
      matchedTank.date = formattedDate;
  
      const updateFields = {
        connected_status: isLoraConnected ? "connected" : "disconnected",
      };
  
      let connected_lora_date = null;
      let connected_lora_time = null;
  
      if (isLoraConnected) {
        connected_lora_date = formattedDate;
        connected_lora_time = matchedTank.time || matchedTankDateObj.toTimeString().split(" ")[0];
  
        updateFields.connected_lora_date = connected_lora_date;
        updateFields.connected_lora_time = connected_lora_time;
      }
  
      // Step 4: Update Insensors collection
      await Insensors.findOneAndUpdate(
        { connected_to: hardwareId, hardwareId: tankhardwareId },
        { $set: updateFields },
        { new: true }
      );
  
      // Step 5: Prepare response
      const displayMessage = isLoraConnected ? "LoRa connected" : "LoRa not connected";
  
      return reply.send({
        status_code: 200,
        message: displayMessage,
        data: matchedTank,
        lora_connected_status: updateFields.connected_status,
        connected_lora_date,
        connected_lora_time
      });
  
    } catch (err) {
      console.error("Error in getByHardwareAndTankId:", err);
      return reply.status(500).send({ error: "Internal Server Error" });
    }
  };
  
  
  
  
  
exports.getAllocatedSensorsByTank = async (req, reply) => {
  try {
    let { customerId, tankName } = req.params;

    if (!customerId || !tankName) {
      return reply.status(400).send({ error: "customerId and tankName are required" });
    }

    tankName = tankName.trim(); // Trim spaces

    console.log("Querying MongoDB with:", { customerId, tankName, status: "blocked" });

    const allocatedSensors = await Insensors.find({
      customerId,
      tankName: { $regex: `^${tankName}$`, $options: "i" }, // Case-insensitive search
      status: "blocked",
    }).lean();

    if (!allocatedSensors.length) {
      return reply.send({
        status_code: 200,
        message: "No allocated sensors found for this tank",
        allocatedSensors: [],
      });
    }

    return reply.send({
      status_code: 200,
      message: "Allocated sensors fetched successfully",
      allocatedSensors,
    });

  } catch (err) {
    console.error("Error fetching allocated sensors:", err);
    return reply.status(500).send({ error: "Internal server error" });
  }
};


exports.createMasterSlaveData = async (req, reply) => {
  try {
    const { installationId } = req.params;
    const {
      type,
      customerId,
      hardwareId,
      batchno,
      masterId,
      tankName,
      tankLocation,
      materialRecived,
      electricityWork,
      plumbingWork,
      loraCheck
    } = req.body;

    if (!installationId || !hardwareId || !masterId) {
      return reply.status(400).send({ message: "installationId, hardwareId, and masterId are required." });
    }

    // 🔹 Fetch stored electricity work pictures
    const electricityWorkData = await ElectrictyWorkPictures.findOne({
      installationId,
      customerId
    });

    const electricityWorkPictures = electricityWorkData
      ? electricityWorkData.pictureUrl.map(pic => ({ url: pic.url, uploadedAt: new Date() }))
      : [];

    // 🔹 Fetch stored plumbing work pictures
    const plumbingWorkData = await PlumbingWorkPictures.findOne({
      installationId,
      customerId
    });

    const plumbingWorkPictures = plumbingWorkData
      ? plumbingWorkData.pictureUrl.map(pic => ({ url: pic.url, uploadedAt: new Date() }))
      : [];

      const materialRecievedData = await MaterialRecievedPictures.findOne({
        installationId,
        customerId
      });
  
      const materialRecievedPictures = materialRecievedData
        ? materialRecievedData.pictureUrl.map(pic => ({ url: pic.url, uploadedAt: new Date() }))
        : [];

    // 🔹 Save all data to MasterSlaveData
    const newData = new MasterSlaveData({
      installationId,
      type,
      customerId,
      hardwareId,
      batchno,
      masterId,
      tankName,
      tankLocation,
      materialRecived,
      electricityWork,
      plumbingWork,
      loraCheck,
      electricityWorkPictures,
      plumbingWorkPictures,
      materialRecievedPictures
    });

    await newData.save();

    reply.status(201).send({
      message: "Master-Slave data created successfully",
      data: newData
    });

  } catch (err) {
    reply.status(500).send({ message: err.message });
  }
};

exports.masterConnectedSlaveList = async (req, reply) => {
  try {
    const { connectedTo } = req.params;

    // Step 1: Find all slave tanks where connected_to matches
    const slaveTanks = await Insensors.find({ connected_to: connectedTo });
    console.log(slaveTanks,"slaveTanks")

    if (!slaveTanks || slaveTanks.length === 0) {
      return reply.status(404).send({ success: false, message: "No tanks found for the given connected_to value" });
    }

    // Step 2: Fetch `tankLocation` and `typeOfWater` from the Tank schema
    const tankDetails = await Tank.findOne({ hardwareId: connectedTo }, { tankLocation: 1, typeOfWater: 1 });

    if (!tankDetails) {
      return reply.status(404).send({ success: false, message: "Tank details not found for the given connectedTo" });
    }

    // Step 3: Count the number of connected slaves
    const slaveCount = slaveTanks.length;

    return reply.send({
      success: true,
      tankLocation: tankDetails.tankLocation,
      typeOfWater: tankDetails.typeOfWater,
      connectedSlaveCount: slaveCount,
      data: slaveTanks,
    });

  } catch (error) {
    console.error("Error fetching master connected slave data:", error);
    return reply.status(500).send({ success: false, message: "Internal Server Error" });
  }
};




exports.mastrerList = async (req, reply) => {
  try {
    const { customerId, installationId } = req.params;

    // Step 1: Get User and extract buildingName
    const user = await User.findOne({ customerId  , installationId 
    });

    if (!user) {
      return reply.status(404).send({ success: false, message: "User not found" });
    }

    const { buildingName } = user;

    // Step 2: Get Tanks with matching customerId
    const tanks = await Tank.find({ customerId });

    if (!tanks.length) {
      return reply.status(404).send({ success: false, message: "No tanks found for this customer" });
    }

    const {tankLocation,typeOfWater} = tanks
    //console.log(tanks)
    // Step 3: Extract hardwareId from tanks
    const hardwareIds = tanks.map(tank => tank.hardwareId);

    // Step 4: Find master tanks in InSensors with both customerId and installationId
    const masterTanks = await Insensors.find({
      customerId, 
      connected_to: { $in: hardwareIds },
      type: "master"
    });

    if (!masterTanks.length) {
      return reply.status(404).send({ success: false, message: "No master tanks found" });
    }

    return reply.send({ success: true,tankLocation,typeOfWater ,buildingName, data: masterTanks, user });

  } catch (error) {
    console.error("Error fetching master tanks:", error);
    return reply.status(500).send({ success: false, message: "Internal Server Error" });
  }
};



//const Insensor = mongoose.model('insensors', insensorsSchema); // if not already defined

// exports.getMasterSlaveSummary = async (req, reply) => {
//   const { customerId } = req.params;

//   try {
//     const masters = await Insensors.aggregate([
//       {
//         $match: {
//           customerId,
//           type: "master"
//         }
//       },
//       {
//         $lookup: {
//           from: 'Insensors', // collection name should match MongoDB collection
//           let: { masterId: '$hardwareId' },
//           pipeline: [
//             {
//               $match: {
//                 $expr: {
//                   $and: [
//                     { $eq: ['$type', 'slave'] },
//                     { $eq: ['$customerId', customerId] },
//                     { $eq: ['$connected_to', '$$masterId'] }
//                   ]
//                 }
//               }
//             },
//             {
//               $project: {
//                 _id: 1,
//                 hardwareId: 1,
//                 tankName: 1,
//                 tankLocation: 1,
//                 model: 1,
//                 status: 1,
//                 indate: 1
//               }
//             }
//           ],
//           as: 'connected_slaves'
//         }
//       },
//       {
//         $addFields: {
//           connected_slave_count: { $size: '$connected_slaves' }
//         }
//       },
//       {
//         $project: {
//           _id: 1,
//           hardwareId: 1,
//           tankName: 1,
//           tankLocation: 1,
//           model: 1,
//           status: 1,
//           indate: 1,
//           connected_slave_count: 1,
//           connected_slaves: 1
//         }
//       }
//     ]);

//     const totalMasters = await Insensors.countDocuments({ customerId, type: 'master' });
//     const totalSlaves = await Insensors.countDocuments({ customerId, type: 'slave' });

//     reply.code(200).send({
//       totalMasters,
//       totalSlaves,
//       masters
//     });
//   } catch (err) {
//     console.error(err);
//     reply.code(500).send({ error: 'Server error', details: err.message });
//   }
// }

//const moment = require('moment'); // For time calculations


exports.getMasterSlaveSummary = async (req, reply) => {
  try {
    const { customerId } = req.params;

    if (!customerId) {
      return reply.status(400).send({ message: "Missing customerId" });
    }

    const allDevices = await Insensors.find({ customerId });

    const masters = allDevices.filter(device => device.type === 'master');
    const slaves = allDevices.filter(device => device.type === 'slave');

    const enrichDeviceWithTimestamp = async (device) => {
      const hardwareId = device.hardwareId?.trim();
      if (!hardwareId) return device.toObject();

      // Fetch latest IoT data
      const latestData = await IotData.findOne({ hardwareId })
        .sort({ date: -1 })
        .lean();

      const enriched = device.toObject();

      // Add GSM Connection info (date/time/status) for master
      if (latestData?.date) {
        const indiaTime = moment.tz(latestData.date, "Asia/Kolkata");
        const date = indiaTime.format("DD-MM-YYYY");
        const time = indiaTime.format("HH:mm:ss");

        const now = moment.tz("Asia/Kolkata");
        const diffInMinutes = now.diff(indiaTime, "minutes");
        const isGSMConnected = diffInMinutes <= 1;
        const gsmStatus = isGSMConnected ? "connected" : "disconnected";

        if (device.type === 'master') {
          enriched.connected_gsm_date = date;
          enriched.connected_gsm_time = time;
          enriched.gsm_connected_status = gsmStatus;
        }
      }

      // Add LoRa Connection info for slaves (per-tank)
      if (latestData?.tanks && Array.isArray(latestData.tanks)) {
        const enrichedTanks = latestData.tanks.map(tank => {
          const tankMoment = moment.tz(tank.date, "Asia/Kolkata");
          const tankDiff = moment.tz("Asia/Kolkata").diff(tankMoment, "minutes");
          const loraStatus = tankDiff <= 1 ? "connected" : "disconnected";

          return {
            ...tank,
            connected_status: loraStatus
          };
        });

        enriched.tanks = enrichedTanks;

        // Update LoRa status for the device itself (if slave)
        if (device.type === 'slave') {
          const connectedTank = enrichedTanks.find(tank => tank.tankhardwareId === device.hardwareId);
          enriched.lora_connected_status = connectedTank ? connectedTank.connected_status : "disconnected";
          enriched.connected_lora_date = connectedTank ? connectedTank.date : null;
          enriched.connected_lora_time = connectedTank ? connectedTank.time : null;
        }
      }

      // Remove GSM fields for slave devices and LoRa fields for master devices
      if (device.type === 'slave') {
        delete enriched.connected_gsm_date;
        delete enriched.connected_gsm_time;
        delete enriched.gsm_connected_status;
      }

      if (device.type === 'master') {
        delete enriched.connected_lora_date;
        delete enriched.connected_lora_time;
        delete enriched.lora_connected_status;
      }

      return enriched;
    };

    // Enrich masters and slaves with timestamps and connection statuses
    const enrichedMasters = await Promise.all(masters.map(enrichDeviceWithTimestamp));
    const enrichedSlaves = await Promise.all(slaves.map(enrichDeviceWithTimestamp));

    // Match slaves to their masters
    const masterSummary = enrichedMasters.map(master => {
      const connectedSlaves = enrichedSlaves.filter(slave => slave.connected_to === master.connected_to);
      return {
        ...master,
        connected_slave_count: connectedSlaves.length,
        connected_slaves: connectedSlaves
      };
    });

    return reply.send({
      status_code: 200,
      message: "Success",
      master_count: enrichedMasters.length,
      slave_count: enrichedSlaves.length,
      data: masterSummary
    });

  } catch (err) {
    console.error("Error in getMasterSlaveSummary:", err);
    return reply.status(500).send({
      status_code: 500,
      message: "Internal Server Error"
    });
  }
};





// exports.getIotDataByCustomer = async (req, reply) => {
//   try {
//     const { customerId } = req.params;

//     if (!customerId) {
//       return reply.code(400).send({ error: "customerId is required" });
//     }

//     // 1. Fetch all tanks by customerId
//     const tanks = await Tank.find({ customerId });
//     console.log("Tanks found:", tanks.length);

//     if (!tanks || tanks.length === 0) {
//       return reply.code(404).send({ message: "No tanks found for this customer." });
//     }

//     // 2. Collect all motor_ids from input & output connections
//     const motorIdSet = new Set();

//     for (const tank of tanks) {
//       const { inputConnections = [], outputConnections = [] } = tank.connections || {};

//       inputConnections.forEach(conn => {
//         if (conn.motor_id) motorIdSet.add(conn.motor_id.trim());
//       });

//       outputConnections.forEach(conn => {
//         if (conn.motor_id) motorIdSet.add(conn.motor_id.trim());
//       });
//     }

//     const motorIds = Array.from(motorIdSet);
//     console.log("Unique motorIds collected:", motorIds);

//     if (motorIds.length === 0) {
//       return reply.send({ status_code: 200, message: "No motors connected", data: [] });
//     }

//     // 3. Fetch the latest IotData for each unique hardwareId
//     const latestIotDataPromises = motorIds.map(hardwareId =>
//       IotData.findOne({ hardwareId }).sort({ date: -1 }).lean()
//     );

//     const iotDataResults = await Promise.all(latestIotDataPromises);
//     const filteredData = iotDataResults.filter(doc => doc); // remove nulls

//     console.log("Latest IotData entries found:", filteredData.length);

//     return reply.send({
//       status_code: 200,
//       message: "Success",
//       data: filteredData
//     });

//   } catch (err) {
//     console.error("Error fetching IoT data by customerId:", err);
//     return reply.code(500).send({ error: "Internal Server Error" });
//   }
// };

// exports.getIotDataByCustomer = async (req, reply) => {
//   try {
//     const { customerId } = req.params;

//     if (!customerId) {
//       return reply.code(400).send({ error: "customerId is required" });
//     }

//     // Fetch all sensors of the customer
//     const sensors = await Insensors.find({ customerId });

//     if (!sensors || sensors.length === 0) {
//       return reply.code(404).send({ message: "No sensors found for this customer." });
//     }

//     // Extract unique hardwareIds
//     const hardwareIds = [
//       ...new Set(
//         sensors.map(sensor => sensor.connected_to?.trim()).filter(Boolean)
//       )
//     ];

//     if (hardwareIds.length === 0) {
//       return reply.send({ status_code: 200, message: "No connected hardwareIds found", data: [] });
//     }

//     // Fetch latest IoT data and enrich it
//     const latestDataPromises = hardwareIds.map(async hardwareId => {
//       const latestRecord = await IotData.findOne({ hardwareId }).sort({ date: -1 }).lean();

//       const relatedSensors = sensors.filter(sensor => sensor.connected_to?.trim() === hardwareId);

//       let message = "GSM is not connected";
//       if (latestRecord?.tanks?.some(tank => parseFloat(tank.tankHeight || 0) > 0)) {
//         message = "GSM is connected";
//       }

//       // Prepare individual tank connection status
//       const tanksStatus = relatedSensors.map(sensor => {
//         const tankhardwareId = sensor.hardwareId?.trim();

//         const matchedTank = latestRecord?.tanks?.find(
//           tank => tank.tankhardwareId === tankhardwareId
//         );

//         const loraMessage =
//           matchedTank && parseFloat(matchedTank.tankHeight || 0) > 0
//             ? "LORA is connected"
//             : "LORA is not connected";

//         return {
//           tankhardwareId,
//           tankName: sensor.tankName ?? null,
//           tankLocation: sensor.tankLocation ?? null,
//           masterName: sensor.masterName ?? null,
//           location: sensor.location ?? null,
//           loraMessage,
//           latestTankData: matchedTank || null
//         };
//       });

//       return {
//         hardwareId,
//         message,
//         masterName: relatedSensors[0]?.masterName ?? null,
//         location: relatedSensors[0]?.location ?? null,
//         tanks: tanksStatus.slice(1) // 👈 Skip the first tank
//       };
//     });

//     const iotDataGrouped = await Promise.all(latestDataPromises);

//     return reply.send({
//       status_code: 200,
//       message: "Success",
//       data: iotDataGrouped
//     });

//   } catch (err) {
//     console.error("Error fetching IoT data by customerId:", err);
//     return reply.code(500).send({ error: "Internal Server Error" });
//   }
// };


exports.getIotDataByCustomer = async (req, reply) => {
  try {
    const { customerId } = req.params;

    if (!customerId) {
      return reply.code(400).send({ error: "customerId is required" });
    }

    // Fetch all sensors for the customer
    const sensors = await Insensors.find({ customerId });

    if (!sensors || sensors.length === 0) {
      return reply.code(404).send({ message: "No sensors found for this customer." });
    }

    // Extract unique hardwareIds that are connected to sensors
    const hardwareIds = [
      ...new Set(
        sensors.map(sensor => sensor.connected_to?.trim()).filter(Boolean)
      )
    ];

    if (hardwareIds.length === 0) {
      return reply.send({ status_code: 200, message: "No connected hardwareIds found", data: [] });
    }

    // Fetch the latest IoT data and enrich it with sensor details
    const latestDataPromises = hardwareIds.map(async hardwareId => {
      // Fetch the latest IoT data for this hardwareId
      const latestRecord = await IotData.findOne({ hardwareId })
        .sort({ date: -1 }) // Sorting to get the latest record based on the date
        .lean();

      // If no IoT data is found for this hardwareId, return a placeholder
      if (!latestRecord) {
        return {
          hardwareId,
          message: "No IoT data found",
          tanks: []
        };
      }

      // Find sensors related to this hardwareId
      const relatedSensors = sensors.filter(sensor => sensor.connected_to?.trim() === hardwareId);

      // Check if this hardwareId is "disconnected" in Insensors (based on your logic, e.g., isConnected=false)
      const isDisconnected = relatedSensors.some(sensor => sensor.isConnected === false); // You can adjust this check based on your schema.

      // Default message for GSM connection status
      let message = isDisconnected ? "GSM is disconnected" : "GSM is not connected";

      // If any tank data has height > 0, assume GSM is connected, overriding the disconnected state
      if (latestRecord?.tanks?.some(tank => parseFloat(tank.tankHeight || 0) > 0)) {
        message = "GSM is connected";
      }

      // Enrich each tank with the IoT data
      const tanksStatus = relatedSensors.map(sensor => {
        const tankhardwareId = sensor.hardwareId?.trim();
        const matchedTank = latestRecord?.tanks?.find(
          tank => tank.tankhardwareId === tankhardwareId
        );

        // Check if LoRa is connected based on the tankHeight
        const loraMessage =
          matchedTank && parseFloat(matchedTank.tankHeight || 0) > 0
            ? "LORA is connected"
            : "LORA is not connected";

        return {
          tankhardwareId,
          tankName: sensor.tankName ?? null,
          tankLocation: sensor.tankLocation ?? null,
          masterName: sensor.masterName ?? null,
          location: sensor.location ?? null,
          loraMessage,
          latestTankData: matchedTank || null
        };
      });

      return {
        hardwareId,
        message,
        masterName: relatedSensors[0]?.masterName ?? null,
        location: relatedSensors[0]?.location ?? null,
        tanks: tanksStatus
      };
    });

    // Wait for all promises to resolve to gather all the enriched data
    const iotDataGrouped = await Promise.all(latestDataPromises);

    // Return the final response
    return reply.send({
      status_code: 200,
      message: "Success",
      data: iotDataGrouped
    });

  } catch (err) {
    console.error("Error fetching IoT data by customerId:", err);
    return reply.code(500).send({ error: "Internal Server Error" });
  }
};

//important
// exports.getIotDataByCustomer = async (req, reply) => {
//   try {
//     const { customerId } = req.params;

//     if (!customerId) {
//       return reply.status(400).send({ error: "customerId is required" });
//     }

//     console.log("Fetching data for customerId:", customerId);

//     // Step 1: Fetch all sensors for the customer
//     const sensors = await Insensors.find({ customerId });

//     if (!sensors || sensors.length === 0) {
//       return reply.send({ status_code: 404, message: "No sensors found for this customer", data: [] });
//     }

//     // Step 2: Fetch latest IoT data for each sensor's hardwareId
//     const enrichedSensors = await Promise.all(sensors.map(async (sensor) => {
//       const { connected_to: hardwareId, masterName, location } = sensor;

//       // Fetch the latest IoT data for this hardwareId
//       const iotData = await IotData.findOne({ hardwareId })
//         .sort({ date: -1 })  // Sort to get the latest data
//         .lean();

//       if (!iotData) {
//         return {
//           hardwareId,
//           message: "No IoT data found",
//           masterName,
//           location,
//           tanks: []
//         };
//       }

//       // Step 3: Get GSM status based on the latest IoT data
//       const latestRecord = iotData;
//       const indiaTime = moment.tz(latestRecord.date, "Asia/Kolkata");
//       const connected_gsm_date = indiaTime.format("YYYY-MM-DD");
//       const connected_gsm_time = indiaTime.format("HH:mm:ss");

//       const now = moment.tz("Asia/Kolkata");
//       const diffInMinutes = now.diff(indiaTime, "minutes");
//       const isGSMConnected = diffInMinutes <= 1;
//       const gsmStatus = isGSMConnected ? "GSM Connected" : "GSM Not Connected";

//       // Step 4: Annotate each tank with LoRa connection status
//       const tanksWithConnectionStatus = latestRecord.tanks.map(tank => {
//         const tankMoment = moment.tz(tank.date, "Asia/Kolkata");
//         const tankDiff = now.diff(tankMoment, "minutes");

//         const loraStatus = tankDiff <= 1 ? "LORA is connected" : "LORA is not connected";
//         return {
//           tankhardwareId: tank.tankhardwareId,
//           tankName: sensor.tankName ?? null,
//           tankLocation: sensor.tankLocation ?? null,
//           masterName: sensor.masterName ?? null,
//           location: sensor.location ?? null,
//           loraMessage: loraStatus,
//           latestTankData: tank
//         };
//       });

//       // Step 5: Return enriched sensor data in the desired format
//       return {
//         hardwareId,
//         message: gsmStatus,
//         masterName,
//         location,
//         tanks: tanksWithConnectionStatus
//       };
//     }));

//     // Step 6: Return the enriched data for the customer
//     return reply.send({
//       status_code: 200,
//       message: "Success",
//       data: enrichedSensors
//     });

//   } catch (err) {
//     console.error("Error in getAllDataForCustomer:", err);
//     return reply.status(500).send({ error: "Internal Server Error" });
//   }
// };


// exports.getIotDataByCustomer = async (req, reply) => {
//   try {
//     const { customerId } = req.params;

//     if (!customerId) {
//       return reply.status(400).send({ error: "customerId is required" });
//     }

//     console.log("Fetching data for customerId:", customerId);

//     // Step 1: Fetch all sensors for the customer
//     const sensors = await Insensors.find({ customerId });

//     if (!sensors || sensors.length === 0) {
//       return reply.send({ status_code: 404, message: "No sensors found for this customer", data: [] });
//     }

//     // Step 2: Fetch latest IoT data for each sensor's hardwareId
//     const enrichedSensors = await Promise.all(sensors.map(async (sensor) => {
//       const { connected_to: hardwareId, masterName, location } = sensor;

//       // Fetch the latest IoT data for this hardwareId
//       const iotData = await IotData.findOne({ hardwareId })
//         .sort({ date: -1 })  // Sort to get the latest data
//         .lean();

//       if (!iotData) {
//         return {
//           hardwareId,
//           message: "No IoT data found",
//           masterName,
//           location,
//           tanks: []
//         };
//       }

//       // Step 3: Get GSM status based on the latest IoT data
//       const latestRecord = iotData;
//       const indiaTime = moment.tz(latestRecord.date, "Asia/Kolkata");
//       const connected_gsm_date = indiaTime.format("YYYY-MM-DD");
//       const connected_gsm_time = indiaTime.format("HH:mm:ss");

//       const now = moment.tz("Asia/Kolkata");
//       const diffInMinutes = now.diff(indiaTime, "minutes");
//       const isGSMConnected = diffInMinutes <= 1;
//       const gsmStatus = isGSMConnected ? "GSM Connected" : "GSM Not Connected";

//       // Step 4: Annotate each tank with LoRa connection status
//       const tanksWithConnectionStatus = latestRecord.tanks.slice(0, 2).map(tank => { // Limit to 2 tanks
//         const tankMoment = moment.tz(tank.date, "Asia/Kolkata");
//         const tankDiff = now.diff(tankMoment, "minutes");

//         const loraStatus = tankDiff <= 1 ? "LORA is connected" : "LORA is not connected";
//         return {
//           tankhardwareId: tank.tankhardwareId,
//           tankName: sensor.tankName ?? null,
//           tankLocation: sensor.tankLocation ?? null,
//           masterName: sensor.masterName ?? null,
//           location: sensor.location ?? null,
//           loraMessage: loraStatus,
//           latestTankData: tank
//         };
//       });

//       // Step 5: Return enriched sensor data in the desired format
//       return {
//         hardwareId,
//         message: gsmStatus,
//         masterName,
//         location,
//         tanks: tanksWithConnectionStatus
//       };
//     }));

//     // Step 6: Return the enriched data for the customer
//     return reply.send({
//       status_code: 200,
//       message: "Success",
//       data: enrichedSensors
//     });

//   } catch (err) {
//     console.error("Error in getAllDataForCustomer:", err);
//     return reply.status(500).send({ error: "Internal Server Error" });
//   }
// };