<?php

namespace App\Console\Commands;

use App\Models\Calendar;
use App\Models\Course;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use Maatwebsite\Excel\Facades\Excel;
use PhpOffice\PhpSpreadsheet\IOFactory;

class UpdateCalendar extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'update:course-urls {file=课程台账.xlsx}';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = '从Excel文件读取课程信息，匹配courses表，获取新闻链接，并创建calendar记录';

    /**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct()
    {
        parent::__construct();
    }

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        $fileName = $this->argument('file');
        $filePath = base_path($fileName);

        if (!file_exists($filePath)) {
            $this->error("文件不存在: {$filePath}");
            return;
        }

        $this->info("开始处理文件: {$fileName}");

        try {
            // 读取Excel文件
            $spreadsheet = IOFactory::load($filePath);
            $sheetCount = $spreadsheet->getSheetCount();

            $this->info("Excel文件包含 {$sheetCount} 个工作表");

            $totalCreated = 0;
            $failedCourses = [];
            $failedNews = [];

            // 处理每个工作表
            for ($sheetIndex = 0; $sheetIndex < $sheetCount; $sheetIndex++) {
                $worksheet = $spreadsheet->getSheet($sheetIndex);
                $sheetName = $worksheet->getTitle();

                $this->info("正在处理工作表: {$sheetName}");

                list($created, $sheetFailedCourses, $sheetFailedNews) = $this->processWorksheet($worksheet, $sheetName);
                $totalCreated += $created;
                $failedCourses = array_merge($failedCourses, $sheetFailedCourses);
                $failedNews = array_merge($failedNews, $sheetFailedNews);
            }

            $this->info("处理完成，总共创建了 {$totalCreated} 条日历记录");

            // 显示匹配失败的课程
            if (!empty($failedCourses)) {
                $this->warn("匹配失败的课程:");
                foreach (array_unique($failedCourses) as $failedCourse) {
                    $this->warn("  - {$failedCourse}");
                }
            }

            // 显示匹配失败的新闻
            if (!empty($failedNews)) {
                $this->warn("匹配失败的新闻:");
                foreach (array_unique($failedNews) as $failedNewsItem) {
                    $this->warn("  - {$failedNewsItem}");
                }
            }

        } catch (\Exception $e) {
            $this->error("处理Excel文件时发生错误: " . $e->getMessage());
            return;
        }
    }

    /**
     * 处理单个工作表
     */
    private function processWorksheet($worksheet, $sheetName)
    {
        $highestRow = $worksheet->getHighestRow();
        $highestColumn = $worksheet->getHighestColumn();

        $this->info("工作表 {$sheetName} 有 {$highestRow} 行，最高列为 {$highestColumn}");

        // 读取第一行作为表头
        $headers = [];
        $highestColumnIndex = \PhpOffice\PhpSpreadsheet\Cell\Coordinate::columnIndexFromString($highestColumn);

        for ($col = 1; $col <= $highestColumnIndex; $col++) {
            $cellValue = $worksheet->getCellByColumnAndRow($col, 1)->getCalculatedValue();
            $headers[$col] = trim($cellValue);
        }

        // 找到"课程"、"开始时间"、"结束时间"、"跳转链接"列的位置
        $courseColumn = null;
        $startTimeColumn = null;
        $endTimeColumn = null;
        $linkColumn = null;

        foreach ($headers as $colIndex => $header) {
            if (strpos($header, '课程') !== false) {
                $courseColumn = $colIndex;
            }
            if (strpos($header, '开始时间') !== false) {
                $startTimeColumn = $colIndex;
            }
            if (strpos($header, '结束时间') !== false) {
                $endTimeColumn = $colIndex;
            }
            if (strpos($header, '跳转链接') !== false) {
                $linkColumn = $colIndex;
            }
        }

        if (!$courseColumn || !$startTimeColumn || !$endTimeColumn || !$linkColumn) {
            $this->warn("工作表 {$sheetName} 中未找到必要的列（课程、开始时间、结束时间、跳转链接）");
            return [0, [], []];
        }

        $this->info("找到课程列: {$courseColumn}，开始时间列: {$startTimeColumn}，结束时间列: {$endTimeColumn}，跳转链接列: {$linkColumn}");
        $created = 0;
        $failedCourses = [];
        $failedNews = [];

        // 处理数据行
        for ($row = 2; $row <= $highestRow; $row++) {
            $courseName = trim($worksheet->getCellByColumnAndRow($courseColumn, $row)->getCalculatedValue());

            // 获取开始时间和结束时间的原始值，避免格式化问题
            $startTimeCell = $worksheet->getCellByColumnAndRow($startTimeColumn, $row);
            $endTimeCell = $worksheet->getCellByColumnAndRow($endTimeColumn, $row);

            // 优先使用原始值，如果没有则使用计算值
            $startTime = $startTimeCell->getValue();
            if ($startTime === null) {
                $startTime = trim($startTimeCell->getCalculatedValue());
            }

            $endTime = $endTimeCell->getValue();
            if ($endTime === null) {
                $endTime = trim($endTimeCell->getCalculatedValue());
            }

            $jumpLink = trim($worksheet->getCellByColumnAndRow($linkColumn, $row)->getCalculatedValue());

            if (empty($courseName) || empty($startTime) || empty($endTime)) {
                continue;
            }

            $this->info("处理行 {$row}: 课程='{$courseName}', 开始时间='{$startTime}' (类型: " . gettype($startTime) . "), 结束时间='{$endTime}' (类型: " . gettype($endTime) . "), 跳转链接='{$jumpLink}'");

            // 1. 匹配courses表
            $courseId = $this->matchCourse($courseName);
            if (!$courseId) {
                $this->warn("✗ 未找到匹配的课程: '{$courseName}'");
                $failedCourses[] = $courseName;
                continue;
            }

            // 2. 匹配phome_ecms_news表获取url和title
            $url = null;
            $title = null;
            if (!empty($jumpLink)) {
                list($title, $url) = $this->getTitleUrlFromNews($jumpLink);
                if (!$url) {
                    $this->warn("✗ 未找到匹配的新闻标题: '{$jumpLink}'");
                    $failedNews[] = $jumpLink;
                }
            }

            // 3. 更新courses表的url字段
            if ($url && $title) {
                $this->updateCourseUrl($courseId, $url, $title);
            }

            // 4. 创建calendar记录
            $calendarCreated = $this->createCalendarRecord($courseId, $courseName, $startTime, $endTime, $url, $title, $courseName);
            if ($calendarCreated) {
                $created++;
                $this->info("✓ 成功创建日历记录: '{$courseName}'");
            } else {
                $this->warn("✗ 创建日历记录失败: '{$courseName}'");
            }
        }

        return [$created, $failedCourses, $failedNews];
    }

    /**
     * 匹配courses表
     */
    private function matchCourse($courseName)
    {
        try {
            // 直接匹配
            $course = Course::where('name', $courseName)->first();

            if ($course) {
                $this->info("通过直接匹配找到课程: '{$course->name}' (ID: {$course->id})");
                return $course->id;
            }

            // 模糊匹配
            $course = Course::where('name', 'like', "%{$courseName}%")
                ->whereNull('deleted_at')
                ->first();

            if ($course) {
                $this->info("通过模糊匹配找到课程: '{$course->name}' (ID: {$course->id})");
                return $course->id;
            }

            // 使用相似度匹配
            $courses = Course::whereNotNull('name')->where('name', '!=', '')->get();

            $bestMatch = null;
            $highestSimilarity = 0;

            foreach ($courses as $course) {
                $similarity = $this->calculateSimilarity($courseName, $course->name);
                if ($similarity > $highestSimilarity) {
                    $highestSimilarity = $similarity;
                    $bestMatch = $course;
                }
            }

            // 取相似度最高的作为结果，不设置阈值限制
            if ($bestMatch && $highestSimilarity > 0.3) {
                $this->info("通过相似度匹配找到课程 (相似度: " . round($highestSimilarity * 100, 2) . "%): '{$bestMatch->name}' (ID: {$bestMatch->id})");
                return $bestMatch->id;
            }

        } catch (\Exception $e) {
            $this->error("查询courses表时发生错误: " . $e->getMessage());
        }

        return null;
    }

    /**
     * 从phome_ecms_news表获取titleurl
     */
    private function getTitleUrlFromNews($title)
    {
        try {
            // 直接匹配
            $news = DB::table('phome_ecms_news')
                ->where('title', $title)
                ->first();

            if ($news && !empty($news->titleurl)) {
                return [$news->title, $news->titleurl];
            }

            // 模糊匹配
            $news = DB::table('phome_ecms_news')
                ->where('title', 'like', "%{$title}%")
                ->first();

            if ($news && !empty($news->titleurl)) {
                $this->info("通过模糊匹配找到: '{$news->title}' -> '{$news->titleurl}'");
                return [$news->title, $news->titleurl];
            }

            // 使用相似度匹配
            $allNews = DB::table('phome_ecms_news')
                ->whereNotNull('title')
                ->whereNotNull('titleurl')
                ->where('title', '!=', '')
                ->where('titleurl', '!=', '')
                ->get();

            $bestMatch = null;
            $highestSimilarity = 0;

            foreach ($allNews as $news) {
                $similarity = $this->calculateSimilarity($title, $news->title);
                if ($similarity > $highestSimilarity) {
                    $highestSimilarity = $similarity;
                    $bestMatch = $news;
                }
            }

            // 取相似度最高的作为结果，不设置阈值限制
            if ($bestMatch && $highestSimilarity > 0.3) {
                $this->info("通过相似度匹配找到新闻 (相似度: " . round($highestSimilarity * 100, 2) . "%): '{$bestMatch->title}' -> '{$bestMatch->titleurl}'");
                return [$bestMatch->title, $bestMatch->titleurl];
            }

        } catch (\Exception $e) {
            $this->error("查询phome_ecms_news表时发生错误: " . $e->getMessage());
        }

        return null;
    }

    /**
     * 更新courses表的url字段
     */
    private function updateCourseUrl($courseId, $titleUrl, $title)
    {
        try {
            $course = Course::find($courseId);
            if ($course) {
                $course->url = $titleUrl;
                $course->url_title = $title;
                $course->save();
                $this->info("✓ 成功更新课程URL: '{$course->name}' -> '{$titleUrl}'");
                return true;
            }
        } catch (\Exception $e) {
            $this->error("更新courses表时发生错误: " . $e->getMessage());
        }

        return false;
    }

    /**
     * 创建calendar记录
     */
    private function createCalendarRecord($courseId, $courseName, $startTime, $endTime, $url = null, $title = null, $calendarTitle = null)
    {
        try {
            // 转换时间格式
            $startDateTime = $this->parseDateTime($startTime);
            $endDateTime = $this->parseDateTime($endTime);

            if (!$startDateTime || !$endDateTime) {
                $this->warn("时间格式解析失败: 开始时间='{$startTime}', 结束时间='{$endTime}'");
                return false;
            }

            // 检查是否已存在相同的日历记录
            $existingCalendar = Calendar::where('course_id', $courseId)
                ->where('start_time', $startDateTime)
                ->where('end_time', $endDateTime)
                ->first();

            if ($existingCalendar) {
                $this->info("日历记录已存在，跳过创建: '{$courseName}'");
                return true;
            }

            // 创建新的日历记录
            $calendar = new Calendar();
            $calendar->type = 1; // 课程类型
            $calendar->course_id = $courseId;
            $calendar->title = $calendarTitle ?: $courseName; // 使用Excel中的课程名字作为title
            $calendar->start_time = $startDateTime;
            $calendar->end_time = $endDateTime;
            $calendar->date = $startDateTime->format('Y-m-d');
            $calendar->url = $url;
            $calendar->is_publish = 1; // 默认发布
            $calendar->save();

            return true;

        } catch (\Exception $e) {
            $this->error("创建calendar记录时发生错误: " . $e->getMessage());
        }

        return false;
    }

    /**
     * 解析日期时间格式
     */
    private function parseDateTime($dateTimeString)
    {
        try {
            // 处理Excel数字格式的日期时间
            if (is_numeric($dateTimeString)) {
                $excelDate = (float)$dateTimeString;

                // Excel日期从1900年1月1日开始计算天数
                // 需要减去2是因为Excel错误地认为1900年是闰年
                $unixTimestamp = ($excelDate - 25569) * 86400;

                $dateTime = new \DateTime();
                $dateTime->setTimestamp($unixTimestamp);

                $this->info("Excel数字日期转换: {$dateTimeString} -> " . $dateTime->format('Y-m-d H:i:s'));
                return $dateTime;
            }

            // 尝试多种日期时间格式
            $formats = [
                'Y-m-d H:i:s',
                'Y-m-d H:i',
                'Y/m/d H:i:s',
                'Y/m/d H:i',
                'Y-m-d',
                'Y/m/d',
                'd/m/Y H:i:s',
                'd/m/Y H:i',
                'd-m-Y H:i:s',
                'd-m-Y H:i'
            ];

            foreach ($formats as $format) {
                $dateTime = \DateTime::createFromFormat($format, $dateTimeString);
                if ($dateTime !== false) {
                    // 如果只有日期没有时间，设置默认时间
                    if (strpos($format, 'H:i') === false) {
                        $dateTime->setTime(9, 0, 0); // 默认上午9点
                    }
                    return $dateTime;
                }
            }

            // 尝试使用strtotime
            $timestamp = strtotime($dateTimeString);
            if ($timestamp !== false) {
                $dateTime = new \DateTime();
                $dateTime->setTimestamp($timestamp);
                return $dateTime;
            }

        } catch (\Exception $e) {
            $this->error("解析日期时间时发生错误: " . $e->getMessage());
        }

        return null;
    }

    /**
     * 计算字符串相似度
     */
    private function calculateSimilarity($str1, $str2)
    {
        // 移除空格并转换为小写
        $str1 = strtolower(preg_replace('/\s+/', '', $str1));
        $str2 = strtolower(preg_replace('/\s+/', '', $str2));

        if ($str1 === $str2) {
            return 1.0;
        }

        if (empty($str1) || empty($str2)) {
            return 0.0;
        }

        // 使用Levenshtein距离计算相似度
        $maxLen = max(strlen($str1), strlen($str2));
        if ($maxLen == 0) {
            return 1.0;
        }

        $distance = levenshtein($str1, $str2);
        $similarity = 1 - ($distance / $maxLen);

        // 如果其中一个字符串包含另一个，提高相似度
        if (strpos($str1, $str2) !== false || strpos($str2, $str1) !== false) {
            $containsSimilarity = min(strlen($str1), strlen($str2)) / $maxLen;
            $similarity = max($similarity, $containsSimilarity);
        }

        return max(0, $similarity);
    }
}