<?php

namespace app\controller\admin;

use support\Request;
use support\think\Db;

class MessagesController
{
    public function overview(Request $request)
    {
        return api_success([
            'cards' => [
                [
                    'title' => '启用模板',
                    'value' => (int)Db::name('message_templates')->where('is_enabled', 1)->count(),
                    'desc' => '当前已启用的消息模板数量',
                ],
                [
                    'title' => '触发规则',
                    'value' => (int)Db::name('message_rules')->where('is_enabled', 1)->count(),
                    'desc' => '当前启用的消息触发规则数量',
                ],
                [
                    'title' => '发送日志',
                    'value' => (int)Db::name('message_logs')->count(),
                    'desc' => '消息发送记录总数',
                ],
                [
                    'title' => '站内消息',
                    'value' => (int)Db::name('user_messages')->count(),
                    'desc' => '当前已生成的站内消息数量',
                ],
            ],
        ]);
    }

    public function templates(Request $request)
    {
        $rows = Db::name('message_templates')
            ->field([
                'id',
                'template_name',
                'template_code',
                'channel',
                'event_code',
                'title',
                'content',
                'is_enabled',
            ])
            ->order('id', 'asc')
            ->select()
            ->toArray();

        $list = array_map(function (array $item) {
            return [
                'id' => (int)$item['id'],
                'template_name' => $item['template_name'],
                'template_code' => $item['template_code'],
                'channel' => $item['channel'],
                'channel_text' => $this->channelText($item['channel']),
                'event_code' => $item['event_code'],
                'title' => $item['title'],
                'content' => $item['content'],
                'is_enabled' => (bool)$item['is_enabled'],
            ];
        }, $rows);

        return api_success(['list' => $list]);
    }

    public function saveTemplate(Request $request)
    {
        $id = (int)$request->input('id', 0);
        $templateName = trim((string)$request->input('template_name', ''));
        $templateCode = trim((string)$request->input('template_code', ''));
        $channel = trim((string)$request->input('channel', ''));
        $eventCode = trim((string)$request->input('event_code', ''));

        if ($templateName === '' || $templateCode === '' || $channel === '' || $eventCode === '') {
            return api_error('模板名称、模板编码、发送渠道和触发事件不能为空', 422);
        }

        $payload = [
            'template_name' => $templateName,
            'template_code' => $templateCode,
            'channel' => $channel,
            'event_code' => $eventCode,
            'title' => trim((string)$request->input('title', '')),
            'content' => trim((string)$request->input('content', '')),
            'is_enabled' => $request->input('is_enabled', true) ? 1 : 0,
            'updated_at' => date('Y-m-d H:i:s'),
        ];

        if ($id > 0) {
            Db::name('message_templates')->where('id', $id)->update($payload);
            return api_success(['id' => $id], '更新成功');
        }

        $payload['created_at'] = date('Y-m-d H:i:s');
        $newId = Db::name('message_templates')->insertGetId($payload);
        return api_success(['id' => (int)$newId], '创建成功');
    }

    public function logs(Request $request)
    {
        $rows = Db::name('message_logs')
            ->field([
                'id',
                'user_id',
                'template_id',
                'biz_type',
                'biz_id',
                'channel',
                'status',
                'fail_reason',
                'sent_at',
                'created_at',
            ])
            ->order('id', 'desc')
            ->select()
            ->toArray();

        $templates = Db::name('message_templates')->column('template_name', 'id');

        $list = array_map(function (array $item) use ($templates) {
            return [
                'id' => (int)$item['id'],
                'user_id' => (int)($item['user_id'] ?? 0),
                'template_name' => $templates[$item['template_id']] ?? '未知模板',
                'biz_type' => $item['biz_type'],
                'biz_id' => (int)($item['biz_id'] ?? 0),
                'channel' => $item['channel'],
                'channel_text' => $this->channelText($item['channel']),
                'status' => $item['status'],
                'status_text' => $this->logStatusText($item['status']),
                'fail_reason' => $item['fail_reason'] ?: '',
                'sent_at' => $item['sent_at'],
                'created_at' => $item['created_at'],
            ];
        }, $rows);

        return api_success(['list' => $list]);
    }

    private function channelText(string $channel): string
    {
        return match ($channel) {
            'inbox' => '站内消息',
            'sms' => '短信',
            'wechat_subscribe' => '微信订阅消息',
            default => $channel,
        };
    }

    private function logStatusText(string $status): string
    {
        return match ($status) {
            'pending' => '待发送',
            'sent' => '已发送',
            'failed' => '发送失败',
            default => $status,
        };
    }
}