<?php

namespace App\Services;

use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class ContactService
{
    /**
     * Get all active contact persons
     */
    public function getActiveContacts(): array
    {
        try {
            $contacts = DB::table('contact_settings')
                ->where('is_active', true)
                ->orderBy('sort_order', 'asc')
                ->orderBy('name', 'asc')
                ->get()
                ->toArray();

            return array_map(function ($item) {
                return [
                    'id' => $item->id,
                    'name' => $item->name,
                    'position' => $item->position,
                    'email' => $item->email,
                    'phone' => $item->phone,
                    'department' => $item->department,
                    'sort_order' => $item->sort_order,
                ];
            }, $contacts);
        } catch (\Exception $e) {
            Log::error('Error fetching active contacts: ' . $e->getMessage());
            throw $e;
        }
    }

    /**
     * Get all contact settings (including inactive) for admin
     */
    public function getAllContactSettings(): array
    {
        try {
            $settings = DB::table('contact_settings')
                ->orderBy('sort_order', 'asc')
                ->orderBy('name', 'asc')
                ->get()
                ->toArray();

            return array_map(function ($item) {
                return [
                    'id' => $item->id,
                    'name' => $item->name,
                    'position' => $item->position,
                    'email' => $item->email,
                    'phone' => $item->phone,
                    'department' => $item->department,
                    'is_active' => (bool) $item->is_active,
                    'sort_order' => $item->sort_order,
                    'created_at' => $item->created_at,
                    'updated_at' => $item->updated_at,
                ];
            }, $settings);
        } catch (\Exception $e) {
            Log::error('Error fetching all contact settings: ' . $e->getMessage());
            throw $e;
        }
    }

    /**
     * Update contact settings (bulk update)
     */
    public function updateContactSettings(array $contactData): array
    {
        try {
            // Clear existing settings
            DB::table('contact_settings')->truncate();

            // Insert new settings
            $insertData = [];
            foreach ($contactData as $index => $item) {
                $insertData[] = [
                    'name' => $item['name'],
                    'position' => $item['position'] ?? null,
                    'email' => $item['email'] ?? null,
                    'phone' => $item['phone'] ?? null,
                    'department' => $item['department'] ?? null,
                    'is_active' => $item['is_active'] ?? true,
                    'sort_order' => $item['sort_order'] ?? $index,
                    'created_at' => now(),
                    'updated_at' => now(),
                ];
            }

            DB::table('contact_settings')->insert($insertData);

            // Return updated settings
            return $this->getAllContactSettings();
        } catch (\Exception $e) {
            Log::error('Error updating contact settings: ' . $e->getMessage());
            throw $e;
        }
    }

    /**
     * Add a single contact person
     */
    public function addContactPerson(array $data): array
    {
        try {
            $id = DB::table('contact_settings')->insertGetId([
                'name' => $data['name'],
                'position' => $data['position'] ?? null,
                'email' => $data['email'] ?? null,
                'phone' => $data['phone'] ?? null,
                'department' => $data['department'] ?? null,
                'is_active' => $data['is_active'] ?? true,
                'sort_order' => $data['sort_order'] ?? 0,
                'created_at' => now(),
                'updated_at' => now(),
            ]);

            return $this->getAllContactSettings();
        } catch (\Exception $e) {
            Log::error('Error adding contact person: ' . $e->getMessage());
            throw $e;
        }
    }

    /**
     * Update a single contact person
     */
    public function updateContactPerson(int $id, array $data): array
    {
        try {
            DB::table('contact_settings')
                ->where('id', $id)
                ->update([
                    'name' => $data['name'],
                    'position' => $data['position'] ?? null,
                    'email' => $data['email'] ?? null,
                    'phone' => $data['phone'] ?? null,
                    'department' => $data['department'] ?? null,
                    'is_active' => $data['is_active'] ?? true,
                    'sort_order' => $data['sort_order'] ?? 0,
                    'updated_at' => now(),
                ]);

            return $this->getAllContactSettings();
        } catch (\Exception $e) {
            Log::error('Error updating contact person: ' . $e->getMessage());
            throw $e;
        }
    }

    /**
     * Delete a contact person
     */
    public function deleteContactPerson(int $id): array
    {
        try {
            DB::table('contact_settings')->where('id', $id)->delete();

            return $this->getAllContactSettings();
        } catch (\Exception $e) {
            Log::error('Error deleting contact person: ' . $e->getMessage());
            throw $e;
        }
    }

    /**
     * Toggle active status of a contact person
     */
    public function toggleContactPerson(int $id): array
    {
        try {
            $contact = DB::table('contact_settings')->where('id', $id)->first();
            
            if (!$contact) {
                throw new \Exception('Contact person not found');
            }

            DB::table('contact_settings')
                ->where('id', $id)
                ->update([
                    'is_active' => !$contact->is_active,
                    'updated_at' => now(),
                ]);

            return $this->getAllContactSettings();
        } catch (\Exception $e) {
            Log::error('Error toggling contact person: ' . $e->getMessage());
            throw $e;
        }
    }
}