<?php

namespace App\Models;

use CodeIgniter\Model;

/**
 * Lead Model
 * Handles all operations related to actual_leads table
 */
class SalesActualLeadModel extends Model
{
    protected $table            = 'sales_actual_leads';
    protected $primaryKey       = 'lead_id';
    protected $useAutoIncrement = true;
    protected $returnType       = 'array';
    protected $useSoftDeletes   = false;
    protected $protectFields    = true;
    protected $allowedFields    = [
        'company_name',
        'email',
        'phone',
        'address',
        'website',
        'gst_number',
        'status',
        'assigned_to',
        'created_by',
        'updated_by'
    ];

    // Dates
    protected $useTimestamps = true;
    protected $dateFormat    = 'datetime';
    protected $createdField  = 'created_at';
    protected $updatedField  = 'updated_at';

    // Validation
    protected $validationRules = [
        'company_name' => 'required|min_length[2]|max_length[255]',
        'email'        => 'required|valid_email|max_length[255]',
        'phone'        => 'required|min_length[10]|max_length[20]',
        'status'       => 'in_list[New,Potential,Prospects,Non prospects]',
    ];

    protected $validationMessages = [
        'company_name' => [
            'required' => 'Company name is required',
        ],
        'email' => [
            'required'    => 'Email is required',
            'valid_email' => 'Please provide a valid email address',
        ],
        'phone' => [
            'required' => 'Phone number is required',
        ],
    ];

    protected $skipValidation = false;

    /**
     * Get lead with assigned user details
     */
    public function getLeadWithUser($leadId)
    {
        return $this->select('actual_leads.*, user_profiles.username as assigned_to_name, user_profiles.email as assigned_to_email')
            ->join('user_profiles', 'user_profiles.id = actual_leads.assigned_to', 'left')
            ->where('actual_leads.lead_id', $leadId)
            ->first();
    }

    /**
     * Get all leads with pagination and filters
     */
    public function getLeadsWithFilters($filters = [], $limit = 10, $offset = 0)
    {
        $builder = $this->select('actual_leads.*, user_profiles.username as assigned_to_name')
            ->join('user_profiles', 'user_profiles.id = actual_leads.assigned_to', 'left');

        if (!empty($filters['status'])) {
            $builder->where('actual_leads.status', $filters['status']);
        }

        if (!empty($filters['assigned_to'])) {
            $builder->where('actual_leads.assigned_to', $filters['assigned_to']);
        }

        if (!empty($filters['search'])) {
            $builder->groupStart()
                ->like('actual_leads.company_name', $filters['search'])
                ->orLike('actual_leads.email', $filters['search'])
                ->orLike('actual_leads.phone', $filters['search'])
                ->groupEnd();
        }

        return [
            'data'  => $builder->limit($limit, $offset)->findAll(),
            'total' => $builder->countAllResults(false)
        ];
    }

    /**
     * Get lead with all related data (contacts, activities, notes)
     */
    public function getLeadComplete($leadId)
    {
        $lead = $this->getLeadWithUser($leadId);
        
        if (!$lead) {
            return null;
        }

        $contactModel = new SalesContactPersonModel();
        $activityModel = new SalesActivityModel();
        $noteModel = new SalesLeadNoteModel();

        $lead['contact_persons'] = $contactModel->where('lead_id', $leadId)->findAll();
        $lead['activities'] = $activityModel->getActivitiesByLead($leadId);
        $lead['notes'] = $noteModel->getNotesByLead($leadId);

        return $lead;
    }

    /**
     * Get leads statistics
     */
    public function getLeadStats($userId = null)
    {
        $builder = $this->builder();
        
        if ($userId) {
            $builder->where('assigned_to', $userId);
        }

        $stats = [
            'total' => $builder->countAllResults(false),
            'new' => $builder->where('status', 'New')->countAllResults(false),
            'potential' => $builder->where('status', 'Potential')->countAllResults(false),
            'prospects' => $builder->where('status', 'Prospects')->countAllResults(false),
            'non_prospects' => $builder->where('status', 'Non prospects')->countAllResults(false),
        ];

        return $stats;
    }
}