<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;

class GameSiteBuilderController extends Controller
{
    private const GAME_MODULE_TYPES = ['ModuleGameList', 'ModuleSmallGameList', 'ModuleRollSmallGameList'];

    public function index(Request $request)
    {
        $pages = DB::connection('mysql')
            ->table('webgame.routes')
            ->select('id', 'path', 'title', 'state')
            ->whereNull('parent_id')
            ->orderBy('index')
            ->get();

        $channels = DB::connection('mysql')
            ->table('webgame.WebChannelConfig')
            ->select('ID', 'Channel', 'StateNo', 'RegionID', 'Remarks')
            ->orderBy('Channel')
            ->get();

        $defaultPageId = (int)($request->input('page_id') ?: ($pages->first()->id ?? 1));

        return view('admin.game_site.builder', [
            'pages' => $pages,
            'channels' => $channels,
            'defaultPageId' => $defaultPageId,
        ]);
    }

    public function data(Request $request)
    {
        $pageId = (int)$request->input('page_id', 1);

        $routeRows = DB::connection('mysql')
            ->table('webgame.routes')
            ->select('id', 'parent_id', 'index', 'path', 'type', 'side', 'block',
                'title', 'icon', 'fill', 'style', 'component', 'query', 'login', 'lpath', 'state')
            ->orderBy('parent_id')
            ->orderBy('index')
            ->get();

        $pageModules = DB::connection('mysql')
            ->table('webgame.modules')
            ->select('id', 'page_id', 'icon', 'pos_index', 'title', 'type', 'api',
                'data_key', 'game_ids', 'tabtype', 'parent_id', 'state', 'link')
            ->where('page_id', $pageId)
            ->orderBy('pos_index')
            ->get();

        $pageModuleIds = $pageModules->pluck('id')->all();

        $links = collect();
        if (!empty($pageModuleIds)) {
            $links = DB::connection('mysql')
                ->table('webgame.module_parents')
                ->select('module_id', 'parent_id')
                ->whereIn('parent_id', $pageModuleIds)
                ->get();
        }

        $linkedModuleIds = $links->pluck('module_id')->all();
        $allModuleIds = array_values(array_unique(array_merge($pageModuleIds, $linkedModuleIds)));

        $allModules = collect();
        if (!empty($allModuleIds)) {
            $allModules = DB::connection('mysql')
                ->table('webgame.modules')
                ->select('id', 'page_id', 'icon', 'pos_index', 'title', 'type', 'api',
                    'data_key', 'game_ids', 'tabtype', 'parent_id', 'state', 'link')
                ->whereIn('id', $allModuleIds)
                ->orderBy('pos_index')
                ->get();
        }

        $allGameIds = [];
        foreach ($allModules as $module) {
            $allGameIds = array_merge($allGameIds, $this->parseGameIds($module->game_ids));
        }
        $allGameIds = array_values(array_unique($allGameIds));

        $gamesMap = [];
        if (!empty($allGameIds)) {
            $games = DB::connection('mysql')
                ->table('webgame.games')
                ->select('id', 'title', 'img', 'brand', 'link', 'state', 'gridNum')
                ->whereIn('id', $allGameIds)
                ->get();
            foreach ($games as $game) {
                $gamesMap[(int)$game->id] = $game;
            }
        }

        $moduleGames = [];
        foreach ($allModules as $module) {
            $ids = $this->parseGameIds($module->game_ids);
            $moduleGames[$module->id] = array_values(array_filter(array_map(
                fn($gid) => $gamesMap[$gid] ?? null, $ids
            )));
        }

        $styles = DB::connection('mysql')
            ->table('webgame.styles')
            ->select('styleid', 'style', 'remarks')
            ->orderBy('styleid')
            ->get();

        $banners = DB::connection('mysql')
            ->table('webgame.banners')
            ->select('bid', 'img', 'alt', 'link', 'state', 'b_order', 'link_module', 'theme_key')
            ->orderBy('b_order', 'desc')
            ->get();

        $channels = DB::connection('mysql')
            ->table('webgame.WebChannelConfig')
            ->select('ID', 'Channel', 'StateNo', 'RegionID', 'Remarks')
            ->orderBy('Channel')
            ->get();

        return response()->json([
            'code' => 200,
            'msg' => 'ok',
            'data' => [
                'page_id' => $pageId,
                'routes' => $routeRows,
                'page_modules' => $pageModules,
                'modules' => $allModules,
                'module_parents' => $links,
                'module_games' => $moduleGames,
                'styles' => $styles,
                'banners' => $banners,
                'channels' => $channels,
            ],
        ]);
    }

    public function updateState(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'table' => 'required|in:routes,modules,games,banners',
            'id' => 'required|integer',
            'state' => 'required|integer|min:0',
        ]);

        if ($validator->fails()) {
            return apiReturnFail($validator->errors()->first());
        }

        $tableMap = [
            'routes' => ['webgame.routes', 'id'],
            'modules' => ['webgame.modules', 'id'],
            'games' => ['webgame.games', 'id'],
            'banners' => ['webgame.banners', 'bid'],
        ];

        $table = $request->input('table');
        [$tableName, $pk] = $tableMap[$table];

        DB::connection('mysql')
            ->table($tableName)
            ->where($pk, $request->input('id'))
            ->update(['state' => $request->input('state')]);

        return apiReturnSuc('state 已更新');
    }

    public function reorderRoutes(Request $request)
    {
        $payload = $request->all();
        if (array_key_exists('parent_id', $payload) && $payload['parent_id'] === '') {
            $payload['parent_id'] = null;
        }

        $validator = Validator::make($payload, [
            'parent_id' => 'nullable|integer',
            'ordered_ids' => 'required|array|min:1',
            'ordered_ids.*' => 'integer',
        ]);

        if ($validator->fails()) {
            return apiReturnFail($validator->errors()->first());
        }

        $parentId = $payload['parent_id'] ?? null;
        $orderedIds = array_values(array_unique(array_map('intval', $payload['ordered_ids'] ?? [])));

        DB::connection('mysql')->transaction(function () use ($parentId, $orderedIds) {
            foreach ($orderedIds as $i => $id) {
                DB::connection('mysql')
                    ->table('webgame.routes')
                    ->where('id', $id)
                    ->where('parent_id', $parentId)
                    ->update(['index' => ($i + 1) * 10]);
            }
        });

        return apiReturnSuc('路由排序已保存');
    }

    public function saveModuleLayout(Request $request)
    {
        $payload = $request->all();
        if (isset($payload['items']) && is_array($payload['items'])) {
            foreach ($payload['items'] as $idx => $item) {
                if (array_key_exists('parent_id', $item) && $item['parent_id'] === '') {
                    $payload['items'][$idx]['parent_id'] = null;
                }
            }
        }

        $validator = Validator::make($payload, [
            'page_id' => 'required|integer',
            'items' => 'required|array|min:1',
            'items.*.module_id' => 'required|integer',
            'items.*.parent_id' => 'nullable|integer',
            'items.*.pos_index' => 'required|integer|min:1',
        ]);

        if ($validator->fails()) {
            return apiReturnFail($validator->errors()->first());
        }

        $pageId = (int)$payload['page_id'];
        $items = $payload['items'] ?? [];

        $pageModuleIds = DB::connection('mysql')
            ->table('webgame.modules')
            ->where('page_id', $pageId)
            ->pluck('id')
            ->map(fn($v) => (int)$v)
            ->all();

        $pageModuleIdSet = array_flip($pageModuleIds);

        DB::connection('mysql')->transaction(function () use ($items, $pageModuleIds, $pageModuleIdSet) {
            foreach ($items as $item) {
                $moduleId = (int)$item['module_id'];
                $parentId = isset($item['parent_id']) ? (int)$item['parent_id'] : null;
                $posIndex = (int)$item['pos_index'];

                if ($parentId === $moduleId) {
                    continue;
                }

                DB::connection('mysql')
                    ->table('webgame.modules')
                    ->where('id', $moduleId)
                    ->update(['pos_index' => $posIndex, 'parent_id' => $parentId]);

                DB::connection('mysql')
                    ->table('webgame.module_parents')
                    ->where('module_id', $moduleId)
                    ->whereIn('parent_id', $pageModuleIds)
                    ->delete();

                if (!is_null($parentId) && isset($pageModuleIdSet[$parentId])) {
                    DB::connection('mysql')
                        ->table('webgame.module_parents')
                        ->updateOrInsert(
                            ['module_id' => $moduleId, 'parent_id' => $parentId],
                            ['module_id' => $moduleId, 'parent_id' => $parentId]
                        );
                }
            }
        });

        return apiReturnSuc('模块布局已保存');
    }

    public function saveModuleGames(Request $request, int $id)
    {
        $validator = Validator::make($request->all(), [
            'game_ids' => 'present|array',
            'game_ids.*' => 'integer',
        ]);

        if ($validator->fails()) {
            return apiReturnFail($validator->errors()->first());
        }

        $module = DB::connection('mysql')->table('webgame.modules')->where('id', $id)->first();
        if (!$module) {
            return apiReturnFail('模块不存在');
        }

        if (!in_array($module->type, self::GAME_MODULE_TYPES, true)) {
            return apiReturnFail('模块类型 [' . $module->type . '] 不支持编辑游戏列表');
        }

        $gameIds = array_values(array_unique(array_map('intval', $request->input('game_ids', []))));

        DB::connection('mysql')
            ->table('webgame.modules')
            ->where('id', $id)
            ->update(['game_ids' => implode(',', $gameIds)]);

        return apiReturnSuc('模块游戏排序已保存');
    }

    public function searchGames(Request $request)
    {
        $q = trim((string)$request->input('q', ''));
        $limit = min(max((int)$request->input('limit', 50), 1), 200);

        $query = DB::connection('mysql')
            ->table('webgame.games')
            ->select('id', 'title', 'brand', 'img', 'link', 'state', 'gridNum')
            ->orderBy('id', 'desc');

        if ($q !== '') {
            $query->where(function ($sub) use ($q) {
                $sub->where('title', 'like', '%' . $q . '%')
                    ->orWhere('brand', 'like', '%' . $q . '%')
                    ->orWhere('gid', 'like', '%' . $q . '%')
                    ->orWhere('id', $q);
            });
        }

        return response()->json([
            'code' => 200, 'msg' => 'ok',
            'data' => $query->limit($limit)->get(),
        ]);
    }

    // ==================== GameTab CRUD ====================

    public function createTab(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'parent_id' => 'required|integer',
            'title' => 'required|string|max:255',
            'icon' => 'nullable|string|max:100',
            'tabtype' => 'required|integer',
            'state' => 'nullable|integer|min:0',
        ]);

        if ($validator->fails()) {
            return apiReturnFail($validator->errors()->first());
        }

        $parentId = (int)$request->input('parent_id');
        $parent = DB::connection('mysql')->table('webgame.modules')->where('id', $parentId)->first();
        if (!$parent || $parent->type !== 'ModuleGameTabs') {
            return apiReturnFail('父模块不存在或不是 ModuleGameTabs 类型');
        }

        $maxPos = DB::connection('mysql')
            ->table('webgame.module_parents')
            ->where('parent_id', $parentId)
            ->join('webgame.modules', 'webgame.modules.id', '=', 'webgame.module_parents.module_id')
            ->where('webgame.modules.type', 'GameTab')
            ->max('webgame.modules.pos_index');

        $newId = DB::connection('mysql')->table('webgame.modules')->insertGetId([
            'page_id' => $parent->page_id,
            'icon' => $request->input('icon', ''),
            'pos_index' => ($maxPos ?? 0) + 1,
            'title' => $request->input('title'),
            'type' => 'GameTab',
            'api' => '',
            'data' => null,
            'data_key' => '',
            'game_ids' => '',
            'tabtype' => $request->input('tabtype'),
            'parent_id' => $parent->parent_id,
            'state' => $request->input('state', 16383),
            'link' => '',
        ]);

        DB::connection('mysql')->table('webgame.module_parents')->insert([
            'module_id' => $newId,
            'parent_id' => $parentId,
        ]);

        return apiReturnSuc(['msg' => 'Tab 已创建', 'id' => $newId]);
    }

    public function updateTab(Request $request, int $id)
    {
        $validator = Validator::make($request->all(), [
            'title' => 'nullable|string|max:255',
            'icon' => 'nullable|string|max:100',
            'tabtype' => 'nullable|integer',
        ]);

        if ($validator->fails()) {
            return apiReturnFail($validator->errors()->first());
        }

        $module = DB::connection('mysql')->table('webgame.modules')->where('id', $id)->first();
        if (!$module || $module->type !== 'GameTab') {
            return apiReturnFail('模块不存在或不是 GameTab 类型');
        }

        $update = [];
        if ($request->has('title')) $update['title'] = $request->input('title');
        if ($request->has('icon')) $update['icon'] = $request->input('icon');
        if ($request->has('tabtype')) $update['tabtype'] = (int)$request->input('tabtype');

        if (!empty($update)) {
            DB::connection('mysql')->table('webgame.modules')->where('id', $id)->update($update);
        }

        return apiReturnSuc('Tab 已更新');
    }

    public function deleteTab(Request $request, int $id)
    {
        $module = DB::connection('mysql')->table('webgame.modules')->where('id', $id)->first();
        if (!$module || $module->type !== 'GameTab') {
            return apiReturnFail('模块不存在或不是 GameTab 类型');
        }

        DB::connection('mysql')->transaction(function () use ($id) {
            DB::connection('mysql')->table('webgame.module_parents')->where('module_id', $id)->delete();
            DB::connection('mysql')->table('webgame.module_parents')->where('parent_id', $id)->delete();
            DB::connection('mysql')->table('webgame.modules')->where('id', $id)->delete();
        });

        return apiReturnSuc('Tab 已删除');
    }

    public function reorderTabs(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'parent_id' => 'required|integer',
            'ordered_ids' => 'required|array|min:1',
            'ordered_ids.*' => 'integer',
        ]);

        if ($validator->fails()) {
            return apiReturnFail($validator->errors()->first());
        }

        $parentId = (int)$request->input('parent_id');
        $orderedIds = array_values(array_unique(array_map('intval', $request->input('ordered_ids', []))));

        DB::connection('mysql')->transaction(function () use ($orderedIds) {
            foreach ($orderedIds as $i => $id) {
                DB::connection('mysql')
                    ->table('webgame.modules')
                    ->where('id', $id)
                    ->where('type', 'GameTab')
                    ->update(['pos_index' => $i + 1]);
            }
        });

        return apiReturnSuc('Tab 排序已保存');
    }

    public function updateStyle(Request $request, int $id)
    {
        $validator = Validator::make($request->all(), [
            'style' => 'required|string',
            'remarks' => 'nullable|string|max:200',
        ]);

        if ($validator->fails()) {
            return apiReturnFail($validator->errors()->first());
        }

        DB::connection('mysql')
            ->table('webgame.styles')
            ->where('styleid', $id)
            ->update([
                'style' => $request->input('style'),
                'remarks' => $request->input('remarks', ''),
            ]);

        return apiReturnSuc('样式已保存');
    }

    private function parseGameIds(?string $gameIds): array
    {
        if (!$gameIds) {
            return [];
        }
        $parts = array_filter(array_map('trim', explode(',', $gameIds)));
        $ids = [];
        foreach ($parts as $part) {
            if ($part !== '' && is_numeric($part)) {
                $ids[] = (int)$part;
            }
        }
        return $ids;
    }
}