<?php

namespace App\Console\Commands;

use App\Models\Course;
use App\Models\CourseType;
use App\Models\CourseTypeDataOverviewConfig;
use App\Models\HistoryCourse;
use App\Models\CourseSign;
use Illuminate\Console\Command;

/**
 * 对比 home-v2 的 yearConfigs 与 courses-home 的 courseTypesSum
 * 在 2024-01-01 ～ 2027-01-01 时间段内，找出课程数量、去重培养人数差异的原因
 */
class DiffHomeV2CoursesHome extends Command
{
    protected $signature = 'diff:home-v2-courses-home {--start=2024-01-01} {--end=2027-01-01}';
    protected $description = '对比 home-v2 yearConfigs 与 courses-home courseTypesSum 在指定时间段内的期数、去重培养人数差异';

    public function handle()
    {
        $start = $this->option('start');
        $end = $this->option('end');
        $this->info("=== 对比时间段: {$start} ～ {$end} ===\n");

        // 1. 找到覆盖该时间段的 yearConfig（或使用该时间段模拟）
        $config = CourseTypeDataOverviewConfig::where('status', true)
            ->where('start_date', '<=', $start)
            ->where(function ($q) use ($end) {
                $q->where('end_date', '>=', $end)->orWhereNull('end_date');
            })
            ->orderBy('sort')
            ->first();

        if (!$config) {
            $config = CourseTypeDataOverviewConfig::where('status', true)
                ->whereBetween('start_date', [$start, $end])
                ->orWhereBetween('end_date', [$start, $end])
                ->orderBy('sort')
                ->first();
        }

        $configStart = $config ? $config->start_date : $start;
        $configEnd = $config && $config->end_date ? $config->end_date : $end;
        $this->info("yearConfig: " . ($config ? "id={$config->id} [{$configStart} ～ {$configEnd}]" : "无覆盖配置，使用 {$configStart} ～ {$configEnd}"));

        // 2. 按 home-v2 逻辑统计（仅用 2024-01-01～2027-01-01 做筛选，与 config 自身范围不一致时以 2024-2027 为准则需单独算）
        // 为与 courses-home 可比，我们在这里用 start～end 作为统一日期范围
        $homeV2 = $this->computeHomeV2Style($start, $end);
        $this->info("\n【home-v2 逻辑】期数: {$homeV2['course_periods_total']}, 去重培养人数: {$homeV2['course_signs_unique_total']}");

        // 3. 按 courses-home 逻辑统计
        $coursesHome = $this->computeCoursesHomeStyle($start, $end);
        $this->info("【courses-home 逻辑】课程数量(行数): {$coursesHome['course_count']}, 去重培养人数: {$coursesHome['course_signs_unique_total']}");

        // 4. 差异
        $diffCount = $coursesHome['course_count'] - $homeV2['course_periods_total'];
        $this->info("\n--- 差异: 课程数量 courses-home 多 " . $diffCount . " ---");

        // 5. 定位多出来的课程来源
        $this->findExtraSources($start, $end, $homeV2, $coursesHome);

        return 0;
    }

    /**
     * home-v2 风格：is_chart=1 且 is_history=0 的 CourseType + 按 name like 的 HistoryCourse + 其他
     */
    protected function computeHomeV2Style(string $start, string $end): array
    {
        $allCourseTypes = CourseType::where('is_chart', 1)->where('is_history', 0)->orderBy('sort')->get();
        $coursePeriodsTotal = 0;
        $courseSignsUniqueTotal = 0;

        $dateFilter = function ($q) use ($start, $end) {
            $q->whereBetween('start_date', [$start, $end])->orWhereBetween('end_date', [$start, $end]);
        };
        $historyDateFilter = function ($q) use ($start, $end) {
            $q->whereBetween('start_time', [$start, $end])->orWhereBetween('end_time', [$start, $end]);
        };

        foreach ($allCourseTypes as $ct) {
            $historyCourse = HistoryCourse::whereHas('typeDetail', fn($q) => $q->where('name', 'like', '%' . $ct->name . '%'))
                ->where($historyDateFilter)->get();
            $courses = Course::where('type', $ct->id)->where('is_chart', 1)->where($dateFilter)->get();

            $coursePeriodsTotal += $historyCourse->count() + $courses->count();
            $courseSignsUniqueTotal += $historyCourse->sum('course_type_signs_pass_unique')
                + (int)CourseSign::courseSignsTotalByUnique($start, $end, 1, $courses->pluck('id'), false, false);
        }

        $other = CourseType::getOtherStatistics($start, $end);
        $coursePeriodsTotal += $other->course_periods_total;
        $courseSignsUniqueTotal += $other->course_signs_total;

        return ['course_periods_total' => $coursePeriodsTotal, 'course_signs_unique_total' => $courseSignsUniqueTotal];
    }

    /**
     * courses-home 风格：全部 CourseType（含 is_history=1）的 Course(is_chart=1) + is_history=1 的 HistoryCourse(calendar.is_count_people=1)
     */
    protected function computeCoursesHomeStyle(string $start, string $end): array
    {
        $course_type_id = CourseType::pluck('id')->toArray();
        $courseTypesSum = [];
        $allCourseIdsForUnique = [];

        $dateFilter = function ($q) use ($start, $end) {
            if ($start && $end) {
                $q->whereBetween('start_date', [$start, $end])->orWhereBetween('end_date', [$start, $end]);
            }
        };

        // 第一循环：所有 CourseType（含 is_history=1）
        $courseTypes = CourseType::whereIn('id', $course_type_id)->get();
        foreach ($courseTypes as $ct) {
            $courses2 = Course::where('type', $ct->id)->where($dateFilter)->where('is_chart', 1)->orderBy('start_date')->get();
            foreach ($courses2 as $c) {
                $courseTypesSum[] = ['source' => 'Course', 'course_type_id' => $ct->id, 'course_type_name' => $ct->name, 'is_history' => $ct->is_history ?? 0, 'course_id' => $c->id, 'course_name' => $c->name];
                $allCourseIdsForUnique[] = $c->id;
            }
        }

        // 第二循环：is_history=1 的 HistoryCourse（与 home-v2 一致：仅 typeDetail.name 能匹配某个 is_chart=1 且 is_history=0 的 name）
        $chartHistoryTypeNames = CourseType::where('is_chart', 1)->where('is_history', 0)->pluck('name')->toArray();
        $courseTypesHistory = CourseType::where('is_history', 1)->whereIn('id', $course_type_id)->get();
        $historySignsTotal = 0;
        foreach ($courseTypesHistory as $hc) {
            $historyQ = HistoryCourse::whereHas('calendar', fn($q) => $q->where('is_count_people', 1))
                ->where(fn($q) => $q->whereBetween('start_time', [$start, $end])->orWhereBetween('end_time', [$start, $end]))
                ->where('type', $hc->id);
            if (!empty($chartHistoryTypeNames)) {
                $historyQ->whereHas('typeDetail', function ($query) use ($chartHistoryTypeNames) {
                    $query->where(function ($q2) use ($chartHistoryTypeNames) {
                        foreach ($chartHistoryTypeNames as $n) {
                            $q2->orWhere('name', 'like', '%' . $n . '%');
                        }
                    });
                });
            } else {
                $historyQ->whereHas('typeDetail', fn($query) => $query->whereRaw('1=0'));
            }
            $courses3 = $historyQ->get();
            foreach ($courses3 as $c) {
                $courseTypesSum[] = ['source' => 'HistoryCourse', 'course_type_id' => $hc->id, 'course_type_name' => $hc->name, 'is_history' => 1, 'history_course_id' => $c->id, 'course_name' => $c->course_name];
                $historySignsTotal += (int)($c->course_type_signs_pass_unique ?? 0);
            }
        }

        $courseSignsUniqueTotal = (int)CourseSign::courseSignsTotalByUnique($start, $end, 1, $allCourseIdsForUnique ?: [], false, false) + $historySignsTotal;

        return [
            'course_count' => count($courseTypesSum),
            'course_signs_unique_total' => $courseSignsUniqueTotal,
            'rows' => $courseTypesSum,
        ];
    }

    /**
     * 找出 courses-home 多出来的课程来源
     */
    protected function findExtraSources(string $start, string $end, array $homeV2, array $coursesHome): void
    {
        $allCourseTypes = CourseType::where('is_chart', 1)->where('is_history', 0)->pluck('id')->toArray();
        $historyDateFilter = function ($q) use ($start, $end) {
            $q->whereBetween('start_time', [$start, $end])->orWhereBetween('end_time', [$start, $end]);
        };
        $dateFilter = function ($q) use ($start, $end) {
            $q->whereBetween('start_date', [$start, $end])->orWhereBetween('end_date', [$start, $end]);
        };

        // home-v2 会计入的：1) Course: type in is_history=0, is_chart=1, 日期  2) HistoryCourse: typeDetail.name like (is_history=0 的 name), 日期  3) 其他
        $homeV2CourseIds = [];
        foreach (CourseType::where('is_chart', 1)->where('is_history', 0)->get() as $ct) {
            $ids = Course::where('type', $ct->id)->where('is_chart', 1)->where($dateFilter)->pluck('id')->toArray();
            $homeV2CourseIds = array_merge($homeV2CourseIds, $ids);
        }
        $otherCourseIds = Course::whereIn('type', CourseType::where('is_chart', 0)->where('is_history', 0)->pluck('id'))
            ->where('is_chart', 1)->where($dateFilter)->pluck('id')->toArray();
        $homeV2CourseIds = array_unique(array_merge($homeV2CourseIds, $otherCourseIds));

        $homeV2HistoryIds = [];
        foreach (CourseType::where('is_chart', 1)->where('is_history', 0)->get() as $ct) {
            $ids = HistoryCourse::whereHas('typeDetail', fn($q) => $q->where('name', 'like', '%' . $ct->name . '%'))
                ->where($historyDateFilter)->pluck('id')->toArray();
            $homeV2HistoryIds = array_merge($homeV2HistoryIds, $ids);
        }
        $otherHistory = HistoryCourse::whereIn('type', CourseType::where('is_chart', 0)->where('is_history', 0)->pluck('id'))
            ->where($historyDateFilter)->pluck('id')->toArray();
        $homeV2HistoryIds = array_unique(array_merge($homeV2HistoryIds, $otherHistory));

        // courses-home 多出的：在 rows 里但不在 home-v2 的
        $extras = [];
        foreach ($coursesHome['rows'] as $r) {
            if ($r['source'] === 'Course') {
                if (!in_array($r['course_id'], $homeV2CourseIds)) {
                    $extras[] = $r;
                }
            } else {
                if (!in_array($r['history_course_id'], $homeV2HistoryIds)) {
                    $extras[] = $r;
                }
            }
        }

        $this->info("\n【多出的课程/期（courses-home 有、home-v2 无）】共 " . count($extras) . " 条：");
        foreach ($extras as $e) {
            $this->line(sprintf(
                "  - %s | type_id=%s is_history=%s | %s | %s",
                $e['source'],
                $e['course_type_id'],
                $e['is_history'],
                $e['course_name'] ?? '-',
                isset($e['course_id']) ? "course_id={$e['course_id']}" : "history_id={$e['history_course_id']}"
            ));
        }

        // 单独列出：type 属于 is_history=1 的 Course（home-v2 不统计此类）
        $isHistory1TypeIds = CourseType::where('is_history', 1)->pluck('id')->toArray();
        $courseFromHistory1Type = Course::whereIn('type', $isHistory1TypeIds)
            ->where('is_chart', 1)
            ->where($dateFilter)
            ->get();
        if ($courseFromHistory1Type->isNotEmpty()) {
            $this->info("\n【属于 is_history=1 课程类型的 Course（home-v2 不统计）】共 " . $courseFromHistory1Type->count() . " 条：");
            foreach ($courseFromHistory1Type as $c) {
                $ct = CourseType::find($c->type);
                $this->line("  - course_id={$c->id} type={$c->type} ({$ct->name}) | {$c->name} | {$c->start_date}～{$c->end_date}");
            }
        }
    }
}