import 'dotenv/config';
import db from '../src/database/models/index.js';
import bcrypt from 'bcryptjs';
import { syncLocationManagers, syncRegionManager, syncZoneManager } from '../src/modules/master/syncHierarchy.service.js';

const { Role, Zone, Region, State, District, User, UserRole } = db;

async function seed() {
    console.log('--- Seeding Comprehensive Golden Path Data ---');

    await db.sequelize.authenticate();
    await db.sequelize.sync({ alter: false });

    const hashedPassword = await bcrypt.hash('Admin@123', 10);

    // 1. Ensure Roles exist
    const roles = [
        { roleCode: 'NBH', roleName: 'National Business Head', category: 'NATIONAL' },
        { roleCode: 'DD Head', roleName: 'DD Head', category: 'NATIONAL' },
        { roleCode: 'ZBH', roleName: 'Zonal Business Head', category: 'ZONAL' },
        { roleCode: 'DD Lead', roleName: 'DD Lead', category: 'ZONAL' },
        { roleCode: 'RBM', roleName: 'Regional Business Manager', category: 'REGIONAL' },
        { roleCode: 'DD-ZM', roleName: 'DD Zonal Manager', category: 'ZONAL' },
        { roleCode: 'ASM', roleName: 'Area Sales Manager', category: 'AREA' },
        { roleCode: 'Super Admin', roleName: 'Super Admin', category: 'NATIONAL' },
        { roleCode: 'Finance', roleName: 'Finance', category: 'DEPARTMENT' },
        { roleCode: 'Dealer', roleName: 'Dealer', category: 'EXTERNAL' },
        { roleCode: 'DD Admin', roleName: 'DD Admin', category: 'ADMIN' }
    ];

    for (const r of roles) {
        await Role.findOrCreate({ where: { roleCode: r.roleCode }, defaults: r });
    }

    const mapUserRole = async (userRec: any, roleCode: string, assignment: any = {}) => {
        const role = await Role.findOne({ where: { roleCode } });
        if (role) {
            await UserRole.findOrCreate({
                where: { userId: userRec.id, roleId: role.id, ...assignment },
                defaults: { userId: userRec.id, roleId: role.id, ...assignment, isActive: true, isPrimary: true }
            });
        }
    };

    // 2. Create Hierarchical Structure
    // Zones
    const zones = [
        { name: 'North Zone', code: 'ZONE-N' },
        { name: 'South Zone', code: 'ZONE-S' }
    ];
    const zoneMap: Record<string, any> = {};
    for (const z of zones) {
        const [zone] = await Zone.findOrCreate({ where: { name: z.name }, defaults: z });
        zoneMap[z.name] = zone;
    }

    // Regions
    const regions = [
        { name: 'NCR Region', zoneName: 'North Zone' },
        { name: 'Punjab Region', zoneName: 'North Zone' },
        { name: 'Karnataka Region', zoneName: 'South Zone' },
        { name: 'Tamil Nadu Region', zoneName: 'South Zone' }
    ];
    const regionMap: Record<string, any> = {};
    for (const r of regions) {
        const zone = zoneMap[r.zoneName];
        const [region] = await Region.findOrCreate({ 
            where: { name: r.name }, 
            defaults: { name: r.name, zoneId: zone.id } 
        });
        regionMap[r.name] = region;
    }

    // States & Districts
    const districts = [
        { name: 'South Delhi', stateName: 'DELHI', regionName: 'NCR Region' },
        { name: 'NOIDA', stateName: 'UTTAR PRADESH', regionName: 'NCR Region' },
        { name: 'Ludhiana', stateName: 'PUNJAB', regionName: 'Punjab Region' },
        { name: 'Bangalore Urban', stateName: 'KARNATAKA', regionName: 'Karnataka Region' }
    ];
    for (const d of districts) {
        const region = regionMap[d.regionName];
        const [state] = await State.findOrCreate({ 
            where: { name: d.stateName }, 
            defaults: { name: d.stateName, zoneId: region.zoneId } 
        });
        await District.findOrCreate({
            where: { name: d.name },
            defaults: { name: d.name, stateId: state.id, regionId: region.id, zoneId: region.zoneId, isActive: true }
        });
    }

    // 3. Create Key Management Users
    // National / Administrative
    const nationalUsers = [
        { email: 'nbh@royalenfield.com', name: 'Alwyn John', role: 'NBH' },
        { email: 'ddhead@royalenfield.com', name: 'Vikram Singh', role: 'DD Head' },
        { email: 'finance@royalenfield.com', name: 'Rahul Verma', role: 'Finance' },
        { email: 'admin@royalenfield.com', name: 'Laxman H', role: 'Super Admin' },
        { email: 'lince@gmail.com', name: 'Lince', role: 'DD Admin' }
    ];
    for (const u of nationalUsers) {
        const [user] = await User.findOrCreate({ 
            where: { email: u.email }, 
            defaults: { fullName: u.name, roleCode: u.role, password: hashedPassword, status: 'active' } 
        });
        await mapUserRole(user, u.role);
    }

    // Frontend Mock Users for Quick Login (Ensuring exact matches)
    const frontendMocks = [
        { email: 'ddlead@royalenfield.com', name: 'Meera Iyer', role: 'DD Lead', zone: 'North Zone' },
        { email: 'yashwin@gmail.com', name: 'Yashwin', role: 'ZBH', zone: 'North Zone' },
        { email: 'kenil@gmail.com', name: 'Kenil', role: 'DD Lead', zone: 'North Zone' },
        { email: 'dealer@royalenfield.com', name: 'Amit Sharma', role: 'Dealer', district: 'South Delhi' }
    ];
    for (const m of frontendMocks) {
        const assignment: any = {};
        if (m.zone) assignment.zoneId = zoneMap[m.zone].id;
        if (m.district) {
            const d = await District.findOne({ where: { name: m.district } });
            if (d) {
                assignment.districtId = d.id;
                assignment.zoneId = d.zoneId;
                assignment.regionId = d.regionId;
            }
        }
        const [user] = await User.findOrCreate({ 
            where: { email: m.email }, 
            defaults: { fullName: m.name, roleCode: m.role, password: hashedPassword, status: 'active' } 
        });
        await mapUserRole(user, m.role, assignment);
    }

    // Zonal Business Heads (Additional)
    const zbhUsers = [
        { email: 'zbh.south@royalenfield.com', name: 'Srinivasan K', zone: 'South Zone' }
    ];
    for (const u of zbhUsers) {
        const zone = zoneMap[u.zone];
        const [user] = await User.findOrCreate({ 
            where: { email: u.email }, 
            defaults: { fullName: u.name, roleCode: 'ZBH', password: hashedPassword, status: 'active' } 
        });
        await mapUserRole(user, 'ZBH', { zoneId: zone.id });
    }

    // Regional Managers (RBMs)
    const rbmUsers = [
        { email: 'rbm.ncr@royalenfield.com', name: 'Sanjay Dutt', region: 'NCR Region' },
        { email: 'rbm.punjab@royalenfield.com', name: 'Harpreet Singh', region: 'Punjab Region' },
        { email: 'rbm.kar@royalenfield.com', name: 'Manish Kumar', region: 'Karnataka Region' }
    ];
    for (const u of rbmUsers) {
        const region = regionMap[u.region];
        const [user] = await User.findOrCreate({ 
            where: { email: u.email }, 
            defaults: { fullName: u.name, roleCode: 'RBM', password: hashedPassword, status: 'active' } 
        });
        await mapUserRole(user, 'RBM', { regionId: region.id, zoneId: region.zoneId });
    }

    // Zonal Managers (DD-ZM) - Assigned to Regions
    const zmUsers = [
        { email: 'zm.ncr@royalenfield.com', name: 'Rajesh Khanna', region: 'NCR Region' },
        { email: 'zm.south@royalenfield.com', name: 'Kartik Subbaraj', region: 'Karnataka Region' }
    ];
    for (const u of zmUsers) {
        const region = regionMap[u.region];
        const [user] = await User.findOrCreate({ 
            where: { email: u.email }, 
            defaults: { fullName: u.name, roleCode: 'DD-ZM', password: hashedPassword, status: 'active' } 
        });
        await mapUserRole(user, 'DD-ZM', { regionId: region.id, zoneId: region.zoneId });
    }

    // ASMs (Assigned to Districts)
    const asmUsers = [
        { email: 'asm.sdelhi@royalenfield.com', name: 'Arun Jaitley', district: 'South Delhi' },
        { email: 'asm.noida@royalenfield.com', name: 'Kishan Reddy', district: 'NOIDA' },
        { email: 'asm.bangalore@royalenfield.com', name: 'Vishnu Dev', district: 'Bangalore Urban' }
    ];
    for (const u of asmUsers) {
        const district = await District.findOne({ where: { name: u.district } });
        if (district) {
            const [user] = await User.findOrCreate({ 
                where: { email: u.email }, 
                defaults: { fullName: u.name, roleCode: 'ASM', password: hashedPassword, status: 'active' } 
            });
            await mapUserRole(user, 'ASM', { districtId: district.id, zoneId: district.zoneId, regionId: district.regionId });
        }
    }

    console.log('--- Triggering Hierarchy Synchronization ---');
    const districtList = await District.findAll({ attributes: ['id'] });
    for (const d of districtList) await syncLocationManagers(d.id);

    const regionList = await Region.findAll({ attributes: ['id'] });
    for (const r of regionList) await syncRegionManager(r.id);

    const zoneList = await Zone.findAll({ attributes: ['id'] });
    for (const z of zoneList) await syncZoneManager(z.id);

    console.log('--- Golden Path Seeding Complete ---');
}

seed().catch(err => {
    console.error(err);
    process.exit(1);
}).then(() => process.exit(0));