<?php

namespace App\Services;

use JiraRestApi\Configuration\ArrayConfiguration;
use JiraRestApi\Issue\IssueService;
use JiraRestApi\JiraException;
use Carbon\Carbon;
use Illuminate\Support\Collection;

class JiraService
{
    private IssueService $issueService;
    private array $config;

    public function __construct()
    {
        $this->config = config('jira');
        $this->initializeJiraClient();
    }

    private function initializeJiraClient(): void
    {
        $jiraConfig = new ArrayConfiguration([
            'jiraHost' => $this->config['host'],
            'jiraUser' => $this->config['username'],
            'jiraPassword' => $this->config['auth_type'] === 'token'
                ? $this->config['api_token']
                : $this->config['password'],
            'timeout' => $this->config['timeout'],
        ]);

        $this->issueService = new IssueService($jiraConfig);
    }


    /**
     * 按项目组织任务数据
     */
    private function organizeIssuesByProject(array $issues): Collection
    {
        $organized = collect();

        foreach ($issues as $issue) {
            $projectKey = $issue->fields->project->key;
            $isSubtask = $issue->fields->issuetype->subtask ?? false;

            if (!$organized->has($projectKey)) {
                $organized->put($projectKey, [
                    'name' => $issue->fields->project->name,
                    'tasks' => collect(),
                ]);
            }

            if ($isSubtask && isset($issue->fields->parent)) {
                // 子任务
                $parentKey = $issue->fields->parent->key;
                $this->addSubtask($organized[$projectKey]['tasks'], $parentKey, $issue);
            } else {
                // 主任务
                $this->addMainTask($organized[$projectKey]['tasks'], $issue);
            }
        }

        return $organized;
    }

    /**
     * 获取单个任务的详细信息
     */
    private function getIssueDetails(string $issueKey): ?object
    {
        try {
            return $this->issueService->get($issueKey, [
                'summary',
                'status',
                'project',
                'issuetype'
            ]);
        } catch (JiraException) {
            return null;
        }
    }

    private function addMainTask(Collection $tasks, $issue): void
    {
        $tasks->put($issue->key, [
            'key' => $issue->key,
            'summary' => $issue->fields->summary,
            'url' => $this->config['host'] . '/browse/' . $issue->key,
            'subtasks' => collect(),
        ]);
    }

    private function addSubtask(Collection $tasks, string $parentKey, $issue): void
    {
        if (!$tasks->has($parentKey)) {
            // 获取父任务的真实信息
            $parentDetails = $this->getIssueDetails($parentKey);
            $parentSummary = $parentDetails ? $parentDetails->fields->summary : '父任务';

            $tasks->put($parentKey, [
                'key' => $parentKey,
                'summary' => $parentSummary,
                'url' => $this->config['host'] . '/browse/' . $parentKey,
                'subtasks' => collect(),
            ]);
        }

        $tasks[$parentKey]['subtasks']->put($issue->key, [
            'key' => $issue->key,
            'summary' => $issue->fields->summary,
            'url' => $this->config['host'] . '/browse/' . $issue->key,
            'created' => $issue->fields->created ?? null,
        ]);
    }

    /**
     * 获取未来一周的任务
     */
    public function getNextWeekTasks(?string $username = null): Collection
    {
        $username = $username ?: $this->config['default_user'];

        if (!$username) {
            throw new \InvalidArgumentException('用户名不能为空');
        }

        // 查询分配给用户且未完成的任务（不包括子任务）
        $jql = sprintf(
            'assignee = "%s" AND status != "Done" AND issuetype != "Sub-task" ORDER BY created ASC',
            $username
        );

        try {
            $issues = $this->issueService->search($jql, 0, 50, [
                'summary',
                'status',
                'project',
                'issuetype',
                'created'
            ]);

            if (!empty($issues->issues)) {
                return $this->organizeIssuesByProject($issues->issues);
            }
        } catch (JiraException $e) {
            throw new \RuntimeException('获取未来任务失败: ' . $e->getMessage());
        }

        return collect();
    }

    /**
     * 生成 Markdown 格式的周报
     */
    public function generateWeeklyReport(?string $username = null): string
    {
        $username = $username ?: $this->config['default_user'];

        // 获取上周的工时记录
        $now = Carbon::now();
        $startOfWeek = $now->copy()->subWeek()->startOfWeek();
        $endOfWeek = $now->copy()->subWeek()->endOfWeek();

        $workLogs = $this->getWorkLogs($username, $startOfWeek, $endOfWeek);
        $organizedTasks = $this->organizeTasksForReport($workLogs);

        $nextWeekTasks = $this->getNextWeekTasks($username);

        $markdown = "# 过去一周的任务\n\n";

        if ($organizedTasks->isEmpty()) {
            $markdown .= "本周暂无工时记录的任务。\n\n";
        } else {
            // 按Sprint分类的需求
            if ($organizedTasks->has('sprints') && $organizedTasks['sprints']->isNotEmpty()) {
                foreach ($organizedTasks['sprints'] as $sprintName => $tasks) {
                    $markdown .= "### {$sprintName}\n";
                    foreach ($tasks as $task) {
                        $checkbox = $this->isTaskCompleted($task['status']) ? '[x]' : '[ ]';
                        $markdown .= "- {$checkbox} [{$task['key']}]({$task['url']}) {$task['summary']}\n";

                        if ($task['subtasks']->isNotEmpty()) {
                            // 按创建时间排序子任务
                            $sortedSubtasks = $task['subtasks']->sortBy('created');
                            foreach ($sortedSubtasks as $subtask) {
                                $subtaskCheckbox = $this->isTaskCompleted($subtask['status']) ? '[x]' : '[ ]';
                                $markdown .= "    - {$subtaskCheckbox} [{$subtask['key']}]({$subtask['url']}) {$subtask['summary']}\n";
                            }
                        }
                    }
                    $markdown .= "\n";
                }
            }

            // 单独列出的任务
            if ($organizedTasks->has('tasks') && $organizedTasks['tasks']->isNotEmpty()) {
                $markdown .= "### 任务\n";
                foreach ($organizedTasks['tasks'] as $task) {
                    $checkbox = $this->isTaskCompleted($task['status']) ? '[x]' : '[ ]';
                    $markdown .= "- {$checkbox} [{$task['key']}]({$task['url']}) {$task['summary']}\n";

                    if ($task['subtasks']->isNotEmpty()) {
                        // 按创建时间排序子任务
                        $sortedSubtasks = $task['subtasks']->sortBy('created');
                        foreach ($sortedSubtasks as $subtask) {
                            $subtaskCheckbox = $this->isTaskCompleted($subtask['status']) ? '[x]' : '[ ]';
                            $markdown .= "    - {$subtaskCheckbox} [{$subtask['key']}]({$subtask['url']}) {$subtask['summary']}\n";
                        }
                    }
                }
                $markdown .= "\n";
            }

            // 按发现阶段分类的Bug
            if ($organizedTasks->has('bugs') && $organizedTasks['bugs']->isNotEmpty()) {
                foreach ($organizedTasks['bugs'] as $stage => $bugs) {
                    $markdown .= "### {$stage}\n";

                    // 按父任务分组Bug
                    $groupedBugs = collect($bugs)->groupBy(function ($bug) {
                        return $bug['parent_key'] ?? 'standalone';
                    });

                    foreach ($groupedBugs as $parentKey => $bugGroup) {
                        if ($parentKey === 'standalone') {
                            // 独立的Bug
                            foreach ($bugGroup as $bug) {
                                $checkbox = $this->isTaskCompleted($bug['status']) ? '[x]' : '[ ]';
                                $summary = $this->cleanSummary($bug['summary']);
                                // 只标记非代码错误的Bug类型，并附加修复描述
                                $bugTypeLabel = '';
                                if ($bug['bug_type'] && $bug['bug_type'] !== '代码错误') {
                                    $bugTypeLabel = "\n    - {$bug['bug_type']}";
                                    if ($bug['bug_description']) {
                                        $bugTypeLabel .= "；{$bug['bug_description']}";
                                    }
                                }
                                $markdown .= "- {$checkbox} [{$bug['key']}]({$bug['url']}) {$summary}{$bugTypeLabel}\n";
                            }
                        } else {
                            // 有父任务的Bug
                            $firstBug = $bugGroup->first();
                            $markdown .= "- [x] {$firstBug['parent_summary']}\n";
                            foreach ($bugGroup as $bug) {
                                $checkbox = $this->isTaskCompleted($bug['status']) ? '[x]' : '[ ]';
                                $summary = $this->cleanSummary($bug['summary']);
                                // 只标记非代码错误的Bug类型，并附加修复描述
                                $bugTypeLabel = '';
                                if ($bug['bug_type'] && $bug['bug_type'] !== '代码错误') {
                                    $bugTypeLabel = "\n        - {$bug['bug_type']}";
                                    if ($bug['bug_description']) {
                                        $bugTypeLabel .= "；{$bug['bug_description']}";
                                    }
                                }
                                $markdown .= "  - {$checkbox} [{$bug['key']}]({$bug['url']}) {$summary}{$bugTypeLabel}\n";
                            }
                        }
                    }
                    $markdown .= "\n";
                }
            }
        }

        $markdown .= "\n# 未来一周的任务\n\n";

        foreach ($nextWeekTasks as $project) {
            foreach ($project['tasks'] as $task) {
                $markdown .= "- [ ] [{$task['key']}]({$task['url']}) {$task['summary']}\n";
            }
        }

        return $markdown;
    }

    /**
     * 获取指定日期范围内的工时记录
     */
    public function getWorkLogs(string $username, Carbon $startDate, Carbon $endDate): Collection
    {
        // 标准工时查询 - 注意：某些JIRA版本可能不支持worklogAuthor和worklogDate
        $jql = sprintf(
            'worklogAuthor = "%s" AND worklogDate >= "%s" AND worklogDate <= "%s" ORDER BY updated DESC',
            $username,
            $startDate->format('Y-m-d'),
            $endDate->format('Y-m-d')
        );

        try {
            $issues = $this->issueService->search($jql, 0, 100, [
                'summary',
                'project',
                'worklog',
                'parent',
                'issuetype',
                'status',
                'created',
                'fixVersions',
                'labels',
                'customfield_10004', // Sprint字段
                'customfield_10900', // Bug发现阶段
                'customfield_12700', // Bug错误类型
                'customfield_10115', // Bug修复描述
                'customfield_14305', // 需求类型
            ]);

            if (!empty($issues->issues)) {
                $workLogs = $this->extractWorkLogs($issues->issues, $username, $startDate, $endDate);

                if ($workLogs->isNotEmpty()) {
                    return $workLogs;
                }
            }
        } catch (JiraException $e) {
            throw new \RuntimeException('获取工时记录失败: ' . $e->getMessage());
        }
        // 如果所有查询都没有结果，返回空集合
        return collect();
    }

    /**
     * 提取工时记录
     */
    private function extractWorkLogs(array $issues, string $username, Carbon $startDate, Carbon $endDate): Collection
    {
        $workLogs = collect();

        foreach ($issues as $issue) {
            try {
                $worklogData = $this->issueService->getWorklog($issue->key);

                foreach ($worklogData->worklogs as $worklog) {
                    try {
                        $worklogDate = Carbon::parse($worklog->started);

                        // 处理 author 可能是数组或对象的情况
                        $authorName = is_array($worklog->author) ? ($worklog->author['name'] ?? '') : ($worklog->author->name ?? '');

                        if (!empty($authorName) && $authorName === $username &&
                            $worklogDate->between($startDate, $endDate)) {

                            // 获取父任务信息
                            $parentTask = null;
                            if (isset($issue->fields->parent)) {
                                $parentTask = [
                                    'key' => $issue->fields->parent->key ?? '',
                                    'summary' => $issue->fields->parent->fields->summary ?? '',
                                ];
                            }

                            // 提取Sprint信息
                            $sprint = $this->extractSprintInfo($issue);

                            // 提取Bug相关信息
                            $bugStage = $this->extractBugStage($issue);
                            $bugType = $this->extractBugType($issue);
                            $bugDescription = $this->extractBugDescription($issue);

                            // 提取需求类型
                            $requirementType = $this->extractRequirementType($issue);

                            $workLogs->push([
                                'id' => $worklog->id ?? '',
                                'project' => $issue->fields->project->name ?? '',
                                'project_key' => $issue->fields->project->key ?? '',
                                'issue_key' => $issue->key,
                                'issue_summary' => $issue->fields->summary ?? '',
                                'issue_url' => $this->config['host'] . '/browse/' . $issue->key,
                                'issue_status' => $issue->fields->status->name ?? 'Unknown',
                                'issue_type' => $issue->fields->issuetype->name ?? 'Unknown',
                                'issue_created' => $issue->fields->created ?? null,
                                'parent_task' => $parentTask,
                                'sprint' => $sprint,
                                'bug_stage' => $bugStage,
                                'bug_type' => $bugType,
                                'bug_description' => $bugDescription,
                                'requirement_type' => $requirementType,
                                'date' => $worklogDate->format('Y-m-d'),
                                'time' => $worklogDate->format('H:i'),
                                'hours' => round(($worklog->timeSpentSeconds ?? 0) / 3600, 2),
                                'time_spent_seconds' => $worklog->timeSpentSeconds ?? 0,
                                'time_spent' => $worklog->timeSpent ?? '',
                                'comment' => $worklog->comment ?? '',
                                'author' => [
                                    'name' => $authorName,
                                    'display_name' => is_array($worklog->author) ? ($worklog->author['displayName'] ?? '') : ($worklog->author->displayName ?? ''),
                                    'email' => is_array($worklog->author) ? ($worklog->author['emailAddress'] ?? '') : ($worklog->author->emailAddress ?? ''),
                                ],
                                'created' => isset($worklog->created) ? Carbon::parse($worklog->created)->format('Y-m-d H:i:s') : '',
                                'updated' => isset($worklog->updated) ? Carbon::parse($worklog->updated)->format('Y-m-d H:i:s') : '',
                                'started' => $worklogDate->format('Y-m-d H:i:s'),
                            ]);
                        }
                    } catch (\Exception) {
                        // 跳过有问题的工时记录
                        continue;
                    }
                }
            } catch (JiraException) {
                // 跳过无法获取工时记录的任务
                continue;
            }
        }

        return $workLogs->sortByDesc('date');
    }

    /**
     * 提取Sprint信息
     */
    private function extractSprintInfo($issue): ?string
    {
        // 尝试从customfield_10004获取Sprint信息
        if (isset($issue->fields->customFields['customfield_10004'])) {
            $sprintField = $issue->fields->customFields['customfield_10004'];

            // 处理数组情况
            if (is_array($sprintField) && !empty($sprintField)) {
                $lastSprint = end($sprintField);
                if (is_string($lastSprint)) {
                    // 解析Sprint字符串，格式通常为: com.atlassian.greenhopper.service.sprint.Sprint@xxx[name=十月中需求,...]
                    if (preg_match('/name=([^,\]]+)/', $lastSprint, $matches)) {
                        return $matches[1];
                    }
                } elseif (is_object($lastSprint) && isset($lastSprint->name)) {
                    return $lastSprint->name;
                }
            }

            // 处理对象情况
            if (is_object($sprintField) && isset($sprintField->name)) {
                return $sprintField->name;
            }

            // 处理字符串情况
            if (is_string($sprintField)) {
                if (preg_match('/name=([^,\]]+)/', $sprintField, $matches)) {
                    return $matches[1];
                }
                // 如果是纯文本，直接返回
                return $sprintField;
            }
        }

        // 尝试从fixVersions获取版本信息作为备选
        if (isset($issue->fields->fixVersions) && is_array($issue->fields->fixVersions) && !empty($issue->fields->fixVersions)) {
            return $issue->fields->fixVersions[0]->name ?? null;
        }

        // 尝试从summary中提取Sprint信息（如果summary包含【十月中需求】这样的标记）
        if (isset($issue->fields->summary)) {
            $summary = $issue->fields->summary;
            // 匹配【xxx需求】或【xxx】格式
            if (preg_match('/【([^】]*需求)】/', $summary, $matches)) {
                return $matches[1];
            }
        }

        return null;
    }

    /**
     * 提取Bug发现阶段
     */
    private function extractBugStage($issue): ?string
    {
        // 从customfield_10900获取Bug阶段
        if (isset($issue->fields->customFields['customfield_10900'])) {
            $stage = $issue->fields->customFields['customfield_10900'];

            // 处理对象类型
            if (is_object($stage) && isset($stage->value)) {
                $stageValue = $stage->value;
            } elseif (is_string($stage)) {
                $stageValue = $stage;
            } else {
                $stageValue = null;
            }

            if ($stageValue && !empty($stageValue)) {
                // 标准化阶段名称
                if (str_contains($stageValue, 'SIT') || str_contains($stageValue, 'sit') || $stageValue === '测试阶段') {
                    return 'SIT环境BUG';
                }
                if (str_contains($stageValue, '生产') || str_contains($stageValue, 'PROD') || str_contains($stageValue, 'prod') || $stageValue === '生产环境') {
                    return '生产环境BUG';
                }
                if (str_contains($stageValue, 'UAT') || str_contains($stageValue, 'uat')) {
                    return 'UAT环境BUG';
                }
                // 如果不匹配标准格式，直接返回原值
                return $stageValue . 'BUG';
            }
        }

        // 从labels中提取Bug阶段
        if (isset($issue->fields->labels) && is_array($issue->fields->labels)) {
            foreach ($issue->fields->labels as $label) {
                if (str_contains($label, 'SIT') || str_contains($label, 'sit')) {
                    return 'SIT环境BUG';
                }
                if (str_contains($label, '生产') || str_contains($label, 'PROD') || str_contains($label, 'prod')) {
                    return '生产环境BUG';
                }
                if (str_contains($label, 'UAT') || str_contains($label, 'uat')) {
                    return 'UAT环境BUG';
                }
            }
        }

        return null;
    }

    /**
     * 提取Bug错误类型
     */
    private function extractBugType($issue): ?string
    {
        // 从customfield_12700获取Bug类型
        if (isset($issue->fields->customFields['customfield_12700'])) {
            $type = $issue->fields->customFields['customfield_12700'];

            // 处理对象类型
            if (is_object($type) && isset($type->value)) {
                return $type->value;
            } elseif (is_string($type) && !empty($type)) {
                return $type;
            }
        }

        // 从labels中提取Bug类型
        if (isset($issue->fields->labels) && is_array($issue->fields->labels)) {
            $bugTypes = ['需求未说明', '沟通问题', '接口文档未说明', '数据问题', '配置问题', '环境问题'];
            foreach ($issue->fields->labels as $label) {
                foreach ($bugTypes as $bugType) {
                    if (str_contains($label, $bugType)) {
                        return $bugType;
                    }
                }
            }
        }

        return null;
    }

    /**
     * 提取Bug修复描述
     */
    private function extractBugDescription($issue): ?string
    {
        // 从customfield_10115获取Bug修复描述
        if (isset($issue->fields->customFields['customfield_10115'])) {
            $description = $issue->fields->customFields['customfield_10115'];

            if (is_string($description) && !empty($description)) {
                return $description;
            }
        }

        return null;
    }

    /**
     * 提取需求类型
     */
    private function extractRequirementType($issue): ?string
    {
        // 从customfield_14305获取需求类型
        if (isset($issue->fields->customFields['customfield_14305'])) {
            $type = $issue->fields->customFields['customfield_14305'];
            if (is_array($type) && !empty($type)) {
                $firstType = $type[0];
                if (is_object($firstType) && isset($firstType->value)) {
                    return $firstType->value;
                }
            } elseif (is_object($type) && isset($type->value)) {
                return $type->value;
            } elseif (is_string($type)) {
                return $type;
            }
        }

        return null;
    }

    /**
     * 清理摘要中的图片链接
     */
    private function cleanSummary(string $summary): string
    {
        // 移除 Jira 图片标记 !image-xxx.png! 和 !https://xxx.png!
        $summary = preg_replace('/!([^!]+\.(png|jpg|jpeg|gif|bmp))!/i', '', $summary);
        // 移除多余的空格和换行
        $summary = preg_replace('/\s+/', ' ', $summary);
        return trim($summary);
    }

    /**
     * 判断任务状态是否应该标记为完成
     */
    private function isTaskCompleted(string $status): bool
    {
        // 不打勾的状态（未完成状态）
        $incompleteStatuses = [
            '开发中',
            '需求已排期',
            '需求已评审',
            'In Progress',
            'To Do',
            'Open',
            'Reopened',
            'In Review',
            'Code Review',
            'Testing',
            'Ready for Testing'
        ];

        return !in_array($status, $incompleteStatuses, true);
    }

    /**
     * 组织任务数据用于周报生成
     */
    private function organizeTasksForReport(Collection $workLogs): Collection
    {
        $organized = collect([
            'sprints' => collect(),
            'tasks' => collect(),
            'bugs' => collect(),
        ]);

        $processedIssues = collect();

        foreach ($workLogs as $workLog) {
            $issueKey = $workLog['issue_key'];
            $issueType = $workLog['issue_type'] ?? 'Unknown';

            // 避免重复处理同一个任务
            if ($processedIssues->has($issueKey)) {
                continue;
            }
            $processedIssues->put($issueKey, true);

            // 判断是否为Bug（通过issuetype判断）
            $isBug = in_array($issueType, ['Bug', 'BUG', 'bug', '缺陷', 'Defect']);

            // 判断是否为需求（Story类型）
            $isStory = in_array($issueType, ['Story', 'story', '需求']);

            // 判断是否为子任务
            $isSubtask = in_array($issueType, ['Sub-task', 'sub-task', '子任务']);

            if ($isBug && $workLog['bug_stage']) {
                // Bug按发现阶段分类
                $stage = $workLog['bug_stage'];
                if (!$organized['bugs']->has($stage)) {
                    $organized['bugs']->put($stage, collect());
                }

                $bugData = [
                    'key' => $workLog['issue_key'],
                    'summary' => $workLog['issue_summary'],
                    'url' => $workLog['issue_url'],
                    'status' => $workLog['issue_status'],
                    'bug_type' => $workLog['bug_type'],
                    'bug_description' => $workLog['bug_description'],
                ];

                // 如果有父任务，添加父任务信息
                if ($workLog['parent_task']) {
                    $bugData['parent_key'] = $workLog['parent_task']['key'];
                    $bugData['parent_summary'] = $workLog['parent_task']['summary'];
                }

                $organized['bugs'][$stage]->push($bugData);
            } elseif (($isStory || $isSubtask) && $workLog['sprint']) {
                // Story类型或子任务，且有Sprint的，按Sprint分类（需求）
                $sprintName = $workLog['sprint'];
                if (!$organized['sprints']->has($sprintName)) {
                    $organized['sprints']->put($sprintName, collect());
                }

                $this->addTaskToSprintOrTaskList($organized['sprints'][$sprintName], $workLog);
            } else {
                // 其他任务单独列出（非Story/子任务类型或没有Sprint的）
                $this->addTaskToSprintOrTaskList($organized['tasks'], $workLog);
            }
        }

        return $organized;
    }

    /**
     * 添加任务到Sprint或任务列表
     */
    private function addTaskToSprintOrTaskList(Collection $taskList, array $workLog): void
    {
        $status = $workLog['issue_status'] ?? 'Unknown';

        if ($workLog['parent_task']) {
            // 子任务
            $parentKey = $workLog['parent_task']['key'];

            if (!$taskList->has($parentKey)) {
                // 获取父任务的真实信息
                $parentDetails = $this->getIssueDetails($parentKey);
                $parentSummary = $parentDetails ? $parentDetails->fields->summary : $workLog['parent_task']['summary'];
                $parentStatus = $parentDetails ? $parentDetails->fields->status->name : 'Unknown';

                $taskList->put($parentKey, [
                    'key' => $parentKey,
                    'summary' => $parentSummary,
                    'url' => $this->config['host'] . '/browse/' . $parentKey,
                    'status' => $parentStatus,
                    'subtasks' => collect(),
                ]);
            }

            $taskList[$parentKey]['subtasks']->put($workLog['issue_key'], [
                'key' => $workLog['issue_key'],
                'summary' => $workLog['issue_summary'],
                'url' => $workLog['issue_url'],
                'status' => $status,
                'created' => $workLog['issue_created'],
            ]);
        } else {
            // 主任务
            if (!$taskList->has($workLog['issue_key'])) {
                $taskList->put($workLog['issue_key'], [
                    'key' => $workLog['issue_key'],
                    'summary' => $workLog['issue_summary'],
                    'url' => $workLog['issue_url'],
                    'status' => $status,
                    'subtasks' => collect(),
                ]);
            }
        }
    }


}