<?php

namespace App\Http\Controllers\Finance;

use App\Http\Controllers\Controller;
use App\Models\Finance\DailyWorkLog;
use App\Models\Finance\DailyWorkLogItem;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class DailyWorkLogController extends Controller
{
    /**
     * 특정 날짜의 업무일지 조회
     */
    public function show(Request $request): JsonResponse
    {
        $date = $request->input('date', date('Y-m-d'));
        $tenantId = session('selected_tenant_id', 1);

        $log = DailyWorkLog::where('log_date', $date)->first();

        if (! $log) {
            return response()->json([
                'success' => true,
                'data' => null,
            ]);
        }

        $items = $log->items()->get()->map(fn ($item) => [
            'id' => $item->id,
            'sort_order' => $item->sort_order,
            'category' => $item->category ?? '',
            'task' => $item->task,
            'priority' => $item->priority ?? '',
            'is_completed' => $item->is_completed,
            'note' => $item->note ?? '',
            'highlight' => $item->getOption('highlight', ''),
        ]);

        $total = $items->count();
        $completed = $items->where('is_completed', true)->count();

        return response()->json([
            'success' => true,
            'data' => [
                'id' => $log->id,
                'log_date' => $log->log_date->format('Y-m-d'),
                'memo' => $log->memo ?? '',
                'reflection' => $log->reflection ?? '',
                'items' => $items->values(),
                'achievement_rate' => $total > 0 ? round(($completed / $total) * 100, 2) : 0,
            ],
        ]);
    }

    /**
     * 업무일지 저장 (일지 + 항목 일괄)
     */
    public function store(Request $request): JsonResponse
    {
        $request->validate([
            'log_date' => 'required|date',
            'memo' => 'nullable|string',
            'reflection' => 'nullable|string',
            'items' => 'nullable|array',
            'items.*.category' => 'nullable|string|max:100',
            'items.*.task' => 'required|string|max:500',
            'items.*.priority' => 'nullable|string|max:50',
            'items.*.is_completed' => 'boolean',
            'items.*.note' => 'nullable|string|max:500',
            'items.*.highlight' => 'nullable|string|max:20',
        ]);

        $tenantId = session('selected_tenant_id', 1);

        $log = DailyWorkLog::updateOrCreate(
            ['tenant_id' => $tenantId, 'log_date' => $request->input('log_date')],
            [
                'memo' => $request->input('memo', ''),
                'reflection' => $request->input('reflection', ''),
                'created_by' => auth()->id(),
            ]
        );

        // 기존 항목 삭제 후 재생성
        $log->items()->forceDelete();

        $items = $request->input('items', []);
        foreach ($items as $i => $itemData) {
            DailyWorkLogItem::create([
                'tenant_id' => $tenantId,
                'daily_work_log_id' => $log->id,
                'sort_order' => $i + 1,
                'category' => $itemData['category'] ?? '',
                'task' => $itemData['task'],
                'priority' => $itemData['priority'] ?? '',
                'is_completed' => $itemData['is_completed'] ?? false,
                'note' => $itemData['note'] ?? '',
                'options' => $itemData['highlight'] ? ['highlight' => $itemData['highlight']] : null,
            ]);
        }

        return response()->json([
            'success' => true,
            'message' => '저장되었습니다.',
        ]);
    }

    /**
     * 업무 항목 완료 토글
     */
    public function toggleItem(int $id): JsonResponse
    {
        $item = DailyWorkLogItem::findOrFail($id);
        $item->update(['is_completed' => ! $item->is_completed]);

        return response()->json([
            'success' => true,
            'is_completed' => $item->is_completed,
        ]);
    }

    /**
     * 업무일지 삭제
     */
    public function destroy(int $id): JsonResponse
    {
        $log = DailyWorkLog::findOrFail($id);
        $log->items()->delete();
        $log->delete();

        return response()->json([
            'success' => true,
            'message' => '삭제되었습니다.',
        ]);
    }

    /**
     * 이전 날짜의 항목 복사
     */
    public function copyFromPrevious(Request $request): JsonResponse
    {
        $request->validate(['date' => 'required|date']);
        $tenantId = session('selected_tenant_id', 1);
        $date = $request->input('date');

        $prevLog = DailyWorkLog::where('log_date', '<', $date)
            ->orderByDesc('log_date')
            ->first();

        if (! $prevLog) {
            return response()->json([
                'success' => false,
                'message' => '이전 업무일지가 없습니다.',
            ]);
        }

        $items = $prevLog->items()->get()->map(fn ($item) => [
            'category' => $item->category ?? '',
            'task' => $item->task,
            'priority' => $item->priority ?? '',
            'is_completed' => false,
            'note' => '',
            'highlight' => $item->getOption('highlight', ''),
        ]);

        return response()->json([
            'success' => true,
            'data' => [
                'source_date' => $prevLog->log_date->format('Y-m-d'),
                'items' => $items->values(),
            ],
        ]);
    }
}