const Admin = require('../models/admin')
const boom = require("boom");
const jwt = require('jsonwebtoken')
const bcrypt = require('bcrypt')


const fastify = require("fastify");
const { Tank, MotorData, IotData } = require('../models/tanks');
const { Deparments, City, Branch } = require('../models/Department');
const JWT_SECRET = 'your-secret-key';

async function generateCustomerId(role) {
  let adminId;
  let isUnique = false;
  let prefix;

  // Set the prefix based on the role
  switch (role) {
    case 'admin':
      prefix = 'AWSAD';
      break;
    case 'sales':
      prefix = 'AWSSL';
      break;
    case 'store':
      prefix = 'AWSST';
      break;
    default:
      throw new Error('Invalid role for customer ID generation');
  }

  while (!isUnique) {
    // Generate a random number or string for the customer ID
    const randomId = Math.floor(1000 + Math.random() * 9000).toString(); // Generates a random number between 1000 and 9999
    adminId = `${prefix}${randomId}`;
    // Check for uniqueness in the Admin collection
    const existingAdmin = await Admin.findOne({ customerId });
    if (!existingAdmin) {
      isUnique = true; // Exit the loop if the customer ID is unique
    }
  }

  return adminId;
}


exports.adminSignUp = async (request, reply) => {
  try {
    const { phone, username, password, role } = request.body;

    if (!username || username.trim() === '') {
      return reply.status(400).send({ message: 'Username is required' });
    }

    // Validate role
    if (!role || !['admin', 'sales', 'store'].includes(role)) {
      return reply.status(400).send({ message: 'Invalid role. Must be either admin, sales, or store' });
    }

  


    // Hash the password using bcrypt
    const hashedPassword = await bcrypt.hash(password, 10);

    const adminId = await generateCustomerId(role); // Assuming you have this function defined elsewhere
    //const building = 'ADMIN'; // You can customize this logic to derive from a parameter or a default value
    //const customerId = `AWSU${building}${c_id}`; // Construct the customer ID

    // Create a new admin object with the hashed password and role
    const admin = new Admin({ phone, username, password: hashedPassword, adminId, role });

    // Save the new admin to the database
    await admin.save();

    reply.send({ message: 'Admin Account Created Successfully' });
  } catch (err) {
    reply.status(500).send({ message: err.message });
  }
};

exports.editAdmin = async (request, reply) => {
  try {
    const { customerId } = request.params;
    const {
      
      phone,
      username,
      picture,
     
    } = request.body;

   
    const existing = await Admin.findOne({ customerId });
    if (!existing) {
      return reply.status(404).send({ message: 'City not found' });
    }

    existing.phone = phone || existing.phone;
    existing.username = username || existing.username;
    existing.picture = picture || existing.picture;
   



    await existing.save();

    reply.send({ message: 'Admin user updated successfully' });
  } catch (err) {
    reply.status(500).send({ message: err.message });
  }
};



exports.adminLogin = async (request, reply) => {
  try {
    const { phone, password } = request.body;

    // Check if an admin with the phone number exists
    const admin = await Admin.findOne({ phone });

    if (!admin) {
      return reply.status(401).send({
        simplydata: {
          error: true,
          message: "Invalid phone number or password",
        },
      });
    }

    // Compare the password entered by the user with the hashed password stored in the database
    const isPasswordValid = await bcrypt.compare(password, admin.password);

    if (!isPasswordValid) {
      return reply.status(401).send({
        simplydata: {
          error: true,
          message: "Invalid phone number or password",
        },
      });
    }

    // Generate a JWT token for the authenticated admin
    const token = jwt.sign(
      { phone: admin.phone, role: admin.role },
      JWT_SECRET,
      { expiresIn: "1h" }
    );

    // Create the response payload
    const responsePayload = {
      simplydata: {
        error: false,
        apiversion: process.env.APIVERSION,
        access_token: token,
        phone: admin.phone,
        type: admin.role,
        customerId: admin.adminId || null,
        username: admin.username || null,
      },
    };

    // Send the response
    return reply.send(responsePayload);
  } catch (err) {
    reply.status(500).send({
      simplydata: {
        error: true,
        message: err.message,
      },
    });
  }
};


// adminController.js

exports.editUserByCustomerId = async (req, reply) => {
  const { customerId } = req.params;
  const { phone, username, role, date } = req.body;

  try {
    const updatedUser = await Admin.findOneAndUpdate(
      { customerId: customerId },   
      { phone, username, role, date },  
    );

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

    return reply.send({ success: true, message: "User details updated successfully", data: updatedUser });
  } catch (error) {
    return reply.status(500).send({ success: false, message: error.message });
  }
};

exports.deleteUserInfo = async (req, reply) => {
  try {
    const customerId = req.params.customerId;
   
    const tank = await Admin.findOneAndDelete({ customerId:customerId });

    reply.send({ status_code: 200, message: 'Delete Sucessfully'});
   // return tank;
  } catch (err) {
    throw boom.boomify(err);
  }
};



exports.salesStoreLogin = async (request, reply) => {
  try {
    const { phone, password, role } = request.body;

    // Check if a user (sales or store) with the phone number and role exists
    const user = await Admin.findOne({ phone, role });

    if (!user) {
      return reply.status(401).send({ message: 'Invalid phone number, password, or role' });
    }

    // Compare the password entered by the user with the hashed password stored in the database
    const isPasswordValid = await bcrypt.compare(password, user.password);

    if (!isPasswordValid) {
      return reply.status(401).send({ message: 'Invalid phone number, password, or role' });
    }

    // Generate a JWT token for the authenticated user (with role sales or store)
    const token = jwt.sign({ phone: user.phone, role: user.role }, JWT_SECRET, { expiresIn: '1h' });

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


exports.getUsersByRole = async (request, reply) => {
  try {
    const { role } = request.params;

    // Ensure the role is either 'sales' or 'store'
    if (!['sales', 'store'].includes(role)) {
      return reply.status(400).send({ message: 'Invalid role. Must be either sales or store.' });
    }

    // Find users with the specific role (sales or store)
    const users = await Admin.find({ role });

    // Send back the list of users
    reply.send(users);
  } catch (err) {
    reply.status(500).send({ message: err.message });
  }
};

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

    // Check if customerId is provided
    if (!customerId) {
      return reply.status(400).send({ message: 'Customer ID is required' });
    }

    // Fetch the user from the database
    const user = await Admin.findOne({ customerId });

    // If user not found, return a 404 response
    if (!user) {
      return reply.status(404).send({ message: 'User not found' });
    }

    // Return the user data
    return reply.send(user);
  } catch (err) {
    return reply.status(500).send({ message: err.message });
  }
};




exports.createUser = async (request, reply) => {
  const { phone, password, role } = request.body;

  // Validate role (only sales or store)
  if (!['sales', 'store'].includes(role)) {
    return reply.status(400).send({ message: 'Invalid role. Must be either sales or store' });
  }

  try {
    const existingUser = await Admin.findOne({ phone });

    if (existingUser) {
      return reply.status(400).send({ message: 'User with this phone number already exists' });
    }

    // Hash the password
    const hashedPassword = await bcrypt.hash(password, 10);

    // Create the new user
    const newUser = new Admin({
      phone,
      password: hashedPassword,
      role,
    });

    await newUser.save();
    return reply.send({ message: 'User created successfully' });
  } catch (err) {
    reply.status(500).send({ message: err.message });
  }
};




  exports.integratingHardwareidToTank =  async (request, reply) => {
    try {
        const { customerId, tankName,tankLocation,hardwareId,hardwareId_company,hardwareId_type } = request.body
       const tank =  await Tank.findOneAndUpdate({customerId, tankName:tankName ,tankLocation:tankLocation.toLowerCase()}, { $set: { hardwareId: hardwareId,hardwareId_company:hardwareId_company,hardwareId_type:hardwareId_type } });
        reply.send({ status_code: 200, message:`${hardwareId} set to ${tankName}` }); 

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


  exports.getDepartmentDetailsByAdminAndName = async (req, reply) => {
  try {
    const { adminId } = req.params;
    const { departmentName, reportingManager } = req.body;

    if (!adminId) {
      return reply.status(400).send({
        simplydata: { error: true, message: "adminId is required in path params" }
      });
    }

    if (!departmentName || !reportingManager) {
      return reply.status(400).send({
        simplydata: { error: true, message: "departmentName and reportingManager are required in body" }
      });
    }

    // ✅ Find department by adminId, departmentName and reportingManager
    const department = await Deparments.findOne({
      adminId,
      departmentName,
      reportingManager
    }).lean();

    if (!department) {
      return reply.status(404).send({
        simplydata: { error: true, message: "Department not found with given criteria" }
      });
    }

    // ✅ Build response data
    const responseData = {
      phone: department.phone,
      firstName: department.firstName,
      lastName: department.lastName,
      email: department.email
    };

    return reply.send({
      simplydata: {
        error: false,
        message: "Department details fetched successfully",
        data: responseData
      }
    });
  } catch (err) {
    console.error("Error fetching department details:", err);
    reply.status(500).send({
      simplydata: { error: true, message: "Internal server error" }
    });
  }
};


exports.getAllCompanys = async (req, reply) => {
  try {
    const companyList = await City.find();

   
    return reply.send({
      status_code: 200,
      message: "Fetched successfully",
      data: companyList,
    });
  } catch (err) {
    console.error("Error fetching ", err);
    return reply.status(500).send({ error: "Internal server error" });
  }
};






exports.getAllOffices = async (req, reply) => {
  try {
    const { officeName } = req.query;

    
    if (!officeName) {
      return reply.code(400).send({
        status_code: 400,
        message: "officeName query param is required"
      });
    }

    let headOffices, branches, departments;

    if (officeName.trim().toUpperCase() === "ALL") {
      // ✅ Fetch all without filtering
      [headOffices, branches, departments] = await Promise.all([
        City.find().lean(),
        Branch.find().lean(),
        Deparments.find().lean()
      ]);
    } else {
      const nameRegex = new RegExp(officeName.trim(), "i");
      [headOffices, branches, departments] = await Promise.all([
        City.find({ officeName: nameRegex }).lean(),
        Branch.find({ officeName: nameRegex }).lean(),
        Deparments.find({ officeName: nameRegex }).lean()
      ]);
    }

    if (headOffices.length === 0 && branches.length === 0) {
      return reply.code(404).send({
        status_code: 404,
        message: "No offices found"
      });
    }

    // 🏢 Group by officeName
    const grouped = {};

    // Head offices
    headOffices.forEach(ho => {
      const key = ho.officeName.trim().toLowerCase();
      if (!grouped[key]) grouped[key] = [];

      const matchingDepartments = departments.filter(
        d => d.officeName?.trim().toLowerCase() === key
      );

      const employeeCount = matchingDepartments.reduce((count, dep) => {
        const mainPerson = 1;
        const subTeamCount = Array.isArray(dep?.team_member?.team_member)
          ? dep.team_member.team_member.length
          : 0;
        return count + mainPerson + subTeamCount;
      }, 0);

      grouped[key].push({
        officeType: "headOffice",
        officeName: ho.officeName.trim(),
        city: ho.city?.trim() || "",
        cityId: ho.cityId || "",
        employeeCount,
        phone: ho.phone || "",
        address: ho.office_address1 || "",
        address2: ho.address2 || "",
        state: ho.state || "",
        country: ho.country || "",
        pincode: ho.pincode || "",
        email: ho.email || "",
        latitude: ho.latitude || 0,
        longitude: ho.longitude || 0,
        googleLocation: ho.googleLocation || "",
        createdAt: ho.createdAt || "",
        updatedAt: ho.updatedAt || ""
      });
    });

    // Branches
    branches.forEach(br => {
      const key = br.officeName.trim().toLowerCase();
      if (!grouped[key]) grouped[key] = [];

      const matchingDepartments = departments.filter(
        d => d.officeName?.trim().toLowerCase() === key && d.city === br.city
      );

      const employeeCount = matchingDepartments.reduce((count, dep) => {
        const mainPerson = 1;
        const subTeamCount = Array.isArray(dep?.team_member?.team_member)
          ? dep.team_member.team_member.length
          : 0;
        return count + mainPerson + subTeamCount;
      }, 0);

      grouped[key].push({
        officeType: "branchOffice",
        branchId: br.branchId || "",
        officeName: br.officeName?.trim() || "",
        city: br.city?.trim() || "",
        employeeCount,
        phone: br.phone || "",
        address: br.office_address1 || "",
        address2: br.address2 || "",
        state: br.state || "",
        country: br.country || "",
        pincode: br.pincode || "",
        email: br.email || "",
        contactPerson: br.nameoftheContactPerson || "",
        latitude: br.latitude || 0,
        longitude: br.longitude || 0,
        googleLocation: br.googleLocation || "",
        createdAt: br.createdAt || "",
        updatedAt: br.updatedAt || ""
      });
    });

    // Convert grouped object into array
    const result = Object.values(grouped).map(offices => ({ offices }));

    return reply.code(200).send({
      status_code: 200,
      message: "Fetched successfully",
      data: result
    });

  } catch (error) {
    console.error("Error fetching city offices:", error);
    return reply.code(500).send({
      status_code: 500,
      message: "Internal server error"
    });
  }
};

exports.getAllOfficesByCity = async (req, reply) => {
  try {
    const { city } = req.query;

    if (!city) {
      return reply.code(400).send({
        status_code: 400,
        message: "city query param is required",
      });
    }

    const cityRegex = new RegExp(city.trim(), "i");


    // 🔹 Step 1: Find all headOffices in this city
    const headOffices = await City.find({ city: cityRegex }).lean();

    // 🔹 Step 2: Find all branchOffices in this city
    const branchMatches = await Branch.find({ city: cityRegex }).lean();

    if (!headOffices.length && !branchMatches.length) {
      return reply.code(404).send({
        status_code: 404,
        message: `No headOffice or branch found for city ${city}`,
      });
    }

    // 🔹 Step 3: Collect all unique officeNames
    const officeNames = [
      ...new Set([
        ...headOffices.map((ho) => ho.officeName.trim()),
        ...branchMatches.map((br) => br.officeName.trim()),
      ]),
    ];

    const finalResponse = [];

    // 🔹 Step 4: For each officeName, gather HO + Branches
    for (const name of officeNames) {
      const ho = await City.findOne({
        officeName: new RegExp(name, "i"),
      }).lean();

      // Get employee count for headOffice (if exists)
      let employeeCount = 0;
      if (ho) {
        const departments = await Deparments.find({ city: ho.city }).lean();
        employeeCount = departments.reduce((count, dep) => {
          const mainPerson = 1;
          const subTeamCount = Array.isArray(dep?.team_member?.team_member)
            ? dep.team_member.team_member.length
            : 0;
          return count + mainPerson + subTeamCount;
        }, 0);
      }

      // Get all branches for this officeName
      const branches = await Branch.find({
        officeName: new RegExp(name, "i"),
      }).lean();

      const offices = [];

      // Add headOffice if found
      if (ho) {
        offices.push({
          officeType: "headOffice",
          officeName: ho.officeName?.trim() || "",
          city: ho.city?.trim() || "",
          cityId: ho.cityId || "",
          employeeCount,
          phone: ho.phone || "",
          address: ho.office_address1 || "",
          address2: ho.address2 || "",
          state: ho.state || "",
          country: ho.country || "",
          pincode: ho.pincode || "",
          email: ho.email || "",
          latitude: ho.latitude || 0,
          longitude: ho.longitude || 0,
          googleLocation: ho.googleLocation || "",
          createdAt: ho.createdAt || "",
          updatedAt: ho.updatedAt || "",
        });
      }

      // Add all branchOffices
      branches.forEach((br) => {
        offices.push({
          officeType: "branchOffice",
          branchId: br.branchId || "",
          officeName: br.officeName?.trim() || "",
          city: br.city?.trim() || "",
          employeeCount, // using HO employee count (optional)
          phone: br.phone || "",
          address: br.office_address1 || "",
          address2: br.address2 || "",
          state: br.state || "",
          country: br.country || "",
          pincode: br.pincode || "",
          email: br.email || "",
          contactPerson: br.nameoftheContactPerson || "",
          latitude: br.latitude || 0,
          longitude: br.longitude || 0,
          googleLocation: br.googleLocation || "",
          createdAt: br.createdAt || "",
          updatedAt: br.updatedAt || "",
        });
      });

      finalResponse.push({
        officeName: name,
        city,
        offices,
      });
    }

    return reply.code(200).send({
      status_code: 200,
      message: "Fetched successfully",
      data: finalResponse,
    });
  } catch (error) {
    console.error("❌ Error in getAllOfficesByCity:", error);
    return reply.code(500).send({
      status_code: 500,
      message: "Internal server error",
      error: error.message,
    });
  }
};




exports.getCityOffices = async (req, reply) => {
  try {
    const { officeName } = req.query;

    if (!officeName) {
      return reply.code(400).send({
        status_code: 400,
        message: "officeName query param is required"
      });
    }

    const nameRegex = new RegExp(officeName.trim(), "i");

    // Fetch head offices, branches, and departments
    const [headOffices, branches, departments] = await Promise.all([
      City.find({ officeName: nameRegex }).lean(),
      Branch.find({ officeName: nameRegex }).lean(),
      Deparments.find({ officeName: nameRegex }).lean()
    ]);

    if (headOffices.length === 0 && branches.length === 0) {
      return reply.code(404).send({
        status_code: 404,
        message: "No offices found for the given officeName"
      });
    }

    const cityMap = {};

    headOffices.forEach(ho => {
      const officeNameTrimmed = ho.officeName.trim().toLowerCase();

      // Get all department docs for this office
      const matchingDepartments = departments.filter(
        d => d.officeName?.trim().toLowerCase() === officeNameTrimmed
      );

      // Count employees: each department doc = 1 main person + sub-team members
      const employeeCount = matchingDepartments.reduce((count, dep) => {
        const mainPerson = 1; // the document itself
        const subTeamCount = Array.isArray(dep?.team_member?.team_member)
          ? dep.team_member.team_member.length
          : 0;
        return count + mainPerson + subTeamCount;
      }, 0);

      cityMap[ho.city.trim().toLowerCase()] = {
        city: ho.city.trim(),
        headOffice: {
          officeName: ho.officeName.trim(),
          cityId: ho.cityId || "",
          employeeCount,
          phone: ho.phone || "",
          address: ho.office_address1 || "",
          state: ho.state || "",
          country: ho.country || "",
          pincode: ho.pincode || "",
          email: ho.email || ""
        },
       // branches: []
      };
    });

    // Attach branches
    branches.forEach(br => {
      const cityKey = br.city.trim().toLowerCase();
      if (!cityMap[cityKey]) {
        cityMap[cityKey] = {
          city: br.city.trim(),
          branches: []
        };
      }
      cityMap[cityKey].branches.push({
        branchId: br.branchId || "",
        officeName: br.officeName?.trim() || "",
        zone: br.zone || "",
        location: br.location || [],
        phone: br.phone || "",
        address: br.office_address1 || "",
        address2: br.address2 || "",
        state: br.state || "",
        country: br.country || "",
        pincode: br.pincode || "",
        email: br.email || "",
        contactPerson: br.nameoftheContactPerson || "",
        createdAt: br.createdAt || "",
        updatedAt: br.updatedAt || ""
      });
    });

    return reply.code(200).send({
      status_code: 200,
      message: "Fetched successfully",
      data: Object.values(cityMap)
    });
  } catch (error) {
    console.error("Error fetching city offices:", error);
    return reply.code(500).send({
      status_code: 500,
      message: "Internal server error"
    });
  }
};


exports.getOfficeDetails = async (req, reply) => {
  try {
    let { officeName, city } = req.params;

    if (!officeName || !city) {
      return reply.code(400).send({ message: "officeName and city are required." });
    }

    // Normalize whitespace and case
    officeName = officeName.trim().replace(/\s+/g, ' ');
    city = city.trim().replace(/\s+/g, ' ');

    const filters = {};

    if (officeName.toUpperCase() !== 'ALL') {
      filters.officeName = { $regex: new RegExp(officeName.replace(/\s+/g, '\\s*'), 'i') };
    }

    if (city.toUpperCase() !== 'ALL') {
      filters.city = { $regex: new RegExp(city.replace(/\s+/g, '\\s*'), 'i') };
    }

    // Query City collection
    const cityResults = await City.find(filters).lean();

    // Query Branch collection
    const branchResults = await Branch.find(filters).lean();

    const combinedResults = [...cityResults, ...branchResults];

    if (combinedResults.length === 0) {
      return reply.status(404).send({ message: "No office details found for the given filters." });
    }

    reply.send({
      status_code: 200,
      message: "Office details fetched successfully.",
      data: combinedResults,
    });

  } catch (error) {
    console.error("Error in getOfficeDetails:", error);
    reply.status(500).send({
      status_code: 500,
      message: "Internal server error",
      error: error.message,
    });
  }
};


  exports.adminEditTeamMember = async (request, reply) => {
    try {
      const { departmentId, teamMemberId } = request.params;
      const updateData = request.body;
  
      // Find the installation
      const installation = await Deparments.findOne({ departmentId });
  
      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.AdmindeleteTeamMember = async (request, reply) => {
      try {
        const { departmentId, teamMemberId } = request.params;
    
        // Find the installation
        const installation = await Deparments.findOne({ departmentId });
    
        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.getCompanyCitiesByOffice = async (request, reply) => {
  try {
    const { officeName } = request.params;

    let cityList = [];

    if (officeName.toUpperCase() === "ALL") {
      // 🔹 Get all cities from both schemas
      const branchCities = await Branch.distinct("city");
      const headOfficeCities = await City.distinct("city");

      cityList = [...branchCities, ...headOfficeCities];
    } else {
      // 🔹 Case-insensitive regex for officeName
      const nameRegex = new RegExp(`^\\s*${officeName.trim()}\\s*$`, "i");

      const branchCities = await Branch.distinct("city", {
        officeName: nameRegex,
      });
      const headOfficeCities = await City.distinct("city", {
        officeName: nameRegex,
      });

      cityList = [...branchCities, ...headOfficeCities];
    }

    // 🔹 Remove duplicates + filter out empty/null
    cityList = [...new Set(cityList.filter((c) => c && c.trim()))];

    // 🔹 Always add "ALL" as the first option
    if (!cityList.includes("ALL")) {
      cityList.unshift("ALL");
    }

    return reply.send({
      status_code: 200,
      message:
        cityList.length > 0
          ? "Cities fetched successfully"
          : "No cities found for given officeName",
      data: cityList,
    });
  } catch (err) {
    console.error("❌ Error fetching cities:", err);
    return reply.status(500).send({
      status_code: 500,
      message: "Internal server error",
    });
  }
};