using Mapster;
using QYZH.InteractiveMagazine.Common.Extensions;
using QYZH.InteractiveMagazine.Infrastructure.OSS;
using QYZH.InteractiveMagazine.IService;
using QYZH.InteractiveMagazine.Models.Common;
using QYZH.InteractiveMagazine.Models.Dto.Journal;
using QYZH.InteractiveMagazine.Models.Entity;
using QYZH.InteractiveMagazine.Models.Enum;
using QYZH.InteractiveMagazine.Repository;
using SqlSugar;
using Yitter.IdGenerator;


namespace QYZH.InteractiveMagazine.Service;

public class JournalPageTaskService(BaseRepository<Journal> journalRepository, OssService ossService, BaseRepository<JournalPageTaskAnswer> answerRepository) : BaseRepository<JournalPageTask>, IJournalPageTaskService
{
    public async Task<long?> InsertAsync(JournalPageTaskAddInput input)
    {
        var JournalStatus = await journalRepository.Queryable().Where(w => w.Id == input.JournalId).Select(s => s.Status).FirstAsync();
        BusinessException.ThrowIf(JournalStatus == (int)JournalStatusEnum.Archive, "书籍已归档不能添加题目");

        var map = input.Adapt<JournalPageTask>();
        map.Id = YitIdHelper.NextId();
        map.GroupId = map.Id;
        var no = input.No.Split('-').Select(int.Parse).ToArray();
        if (no.Last() >= 2)
        {
            var startNo = $"{no[0]}-{no[1]}-{no[2]}-1";
            var groupTask = await Queryable().Where(w => w.No == startNo && w.JournalId == input.JournalId).FirstAsync();
            BusinessException.ThrowIf(groupTask.IsNull(), "未找到关联跨页的第一部分");
            map.GroupId = groupTask.GroupId;
            map.Type = groupTask.Type;
        }

        var data = await base.InsertAsync(map);

        // 创建默认答案记录
        var answer = new JournalPageTaskAnswer
        {
            JournalPageTaskId = map.Id,
            CreatedBy = "System",
            UpdatedBy = "System",
            CreatedAt = DateTime.Now,
            UpdatedAt = DateTime.Now,
            IsDeleted = false
        };

        // 如果是关联跨页题目，从第一部分的 Answer 复制 Score 和 AnswerTime
        if (no.Last() >= 2)
        {
            var startNo = $"{no[0]}-{no[1]}-{no[2]}-1";
            var firstTask = await Queryable().Where(w => w.No == startNo && w.JournalId == input.JournalId).FirstAsync();
            if (firstTask != null)
            {
                var firstAnswer = await answerRepository.Queryable().Where(a => a.JournalPageTaskId == firstTask.Id).FirstAsync();
                if (firstAnswer != null)
                {
                    answer.Score = firstAnswer.Score;
                    answer.AnswerTime = firstAnswer.AnswerTime;
                }
            }
        }

        await answerRepository.InsertAsync(answer);

        return map?.Id;
    }


    public async Task<bool> UpdateAsync(JournalPageTaskUpdateInput input)
    {
        var JournalStatus = await journalRepository.Queryable().Where(w => w.Id == input.JournalId).Select(s => s.Status).FirstAsync();
        BusinessException.ThrowIf(JournalStatus == (int)JournalStatusEnum.Archive, "书籍已归档不能修改题目");

        var task = await base.Queryable().Where(w => w.Id == input.Id).FirstAsync();
        BusinessException.ThrowIf(task.IsNull(), "未找到关联的题号");

        var sameTask = await base.Queryable().Where(w => w.No == input.No && w.JournalId == input.JournalId && w.Id != input.Id).FirstAsync();
        BusinessException.ThrowIf(sameTask.IsNotEmpty(), "已经存在相同题号题目");


        var key = $"journal/{task.JournalId}/{task.JournalPageId}/{task.GroupId}";

        // 题目侧字段处理
        input.Task = Deal(task.Task, input.Task, key, "task");

        task.Type = input.Type;
        task.Task = input.Task;
        task.Options = input.Options;
        task.No = input.No;
        var no = input.No.Split('-').Select(int.Parse).ToArray();
        if (no.Last() >= 2)
        {
            var startNo = $"{no[0]}-{no[1]}-{no[2]}-1";
            var groupTask = await Queryable().Where(w => w.No == startNo && w.JournalId == input.JournalId).FirstAsync();
            BusinessException.ThrowIf(groupTask.IsNull(), "未找到关联跨页的第一部分");
            task.GroupId = groupTask.GroupId;
            task.Type = groupTask.Type;
        }

        var taskResult = await base.Updateable(task).ExecuteCommandAsync() > 0;

        // 答案侧字段处理
        var answer = await answerRepository.Queryable().Where(a => a.JournalPageTaskId == task.Id).FirstAsync();
        if (answer == null)
        {
            // 兼容旧数据：如果 Answer 记录不存在则创建
            answer = new JournalPageTaskAnswer
            {
                JournalPageTaskId = task.Id,
                CreatedBy = "System",
                CreatedAt = DateTime.Now,
                IsDeleted = false
            };
        }

        // 答案/解析内容处理
        answer.Answer = Deal(answer.Answer, input.Answer, key, "answer");
        answer.Analysis = Deal(answer.Analysis, input.Analysis, key, "analysis");
        answer.Score = input.Score;
        answer.AnswerTime = input.AnswerTime;
        answer.UpdatedBy = "System";
        answer.UpdatedAt = DateTime.Now;

        if (no.Last() >= 2)
        {
            var startNo = $"{no[0]}-{no[1]}-{no[2]}-1";
            var firstTask = await Queryable().Where(w => w.No == startNo && w.JournalId == input.JournalId).FirstAsync();
            if (firstTask != null)
            {
                var firstAnswer = await answerRepository.Queryable().Where(a => a.JournalPageTaskId == firstTask.Id).FirstAsync();
                if (firstAnswer != null)
                {
                    answer.Score = firstAnswer.Score;
                    answer.AnswerTime = firstAnswer.AnswerTime;
                }
            }
        }

        if (answer.Id == 0)
        {
            await answerRepository.InsertAsync(answer);
        }
        else
        {
            await answerRepository.UpdateAsync(answer);
        }

        return taskResult;
    }

    public async Task<bool> KeywordAnalysisAsync(JournalPageTaskKeywordAnalysis input)
    {
        // KeywordAnalysis 已移至 Answer 表，通过 GroupId 关联的 Task 找到对应的 Answer 记录进行更新
        var taskIds = await Queryable().Where(w => w.GroupId == input.Id).Select(w => w.Id).ToListAsync();
        if (taskIds.Count == 0) return false;

        return await answerRepository.Updateable()
            .SetColumns(s => s.KeywordAnalysis, input.KeywordAnalysis)
            .Where(a => taskIds.Contains(a.JournalPageTaskId))
            .ExecuteCommandAsync() > 0;
    }

    public async Task<JournalPageTaskOutput> DetailAsync(long id)
    {
        var data = await base.Queryable()
                            .InnerJoin<JournalPageTaskAnswer>((w, a) => a.JournalPageTaskId == w.Id)
                            .Where((w, a) => w.Id == id)
                            .Select((w, a) => new JournalPageTaskOutput()
                            {
                                Id = w.Id,
                                JournalId = w.JournalId,
                                JournalPageId = w.JournalPageId,
                                No = w.No,
                                Type = (TaskBankTypeEnum)w.Type,
                                Task = w.Task,
                                Options = w.Options,
                                Answer = a.Answer,
                                Analysis = a.Analysis,
                                Score = a.Score,
                                AnswerTime = a.AnswerTime,
                                KeywordAnalysis = a.KeywordAnalysis
                            }, true).FirstAsync();
        return data;

    }

    public async Task<bool> DeleteAsync(long id)
    {
        var task = await base.Queryable().Where(w => w.Id == id).FirstAsync();
        BusinessException.ThrowIf(task.IsNull(), "问题不存在");

        var key = $"journal/{task.JournalId}/{task.JournalPageId}/{id}";

        // 同时删除关联的答案记录
        await answerRepository.DeleteAsync(a => a.JournalPageTaskId == id);

        ossService.DeleteObject(key);

        return await base.DeleteAsync(d => d.Id == id);
    }

    public async Task<bool> ComplementAsync(JournalPageTaskComplementInput input)
    {
        var task = await base.Queryable().Where(w => w.Id == input.Id).FirstAsync();
        BusinessException.ThrowIf(task.IsNull(), "问题不存在");

        if (input.AudioUrl.NotNull())
        {
            var key = $"journal/{task.JournalId}/{task.JournalPageId}/{task.Id}/audio.{input.AudioUrl.ToExtension()}";
            ossService.CopyObject(input.AudioUrl, key);
            input.AudioUrl = key;
        }
        if (input.PointsUrl.NotNull())
        {
            var key = $"journal/{task.JournalId}/{task.JournalPageId}/{task.Id}/points.json";
            ossService.CopyObject(input.PointsUrl, key);
            input.PointsUrl = key;
        }
        return await Updateable(input.Adapt<JournalPageTask>()).Where(w => w.Id == input.Id).ExecuteCommandAsync() > 0;
    }

    private string Deal(string oldUrls, string newUrls, string key, string type)
    {
        // 如果 newUrls 为空，则直接返回
        if (newUrls.IsNull()) return null;

        // 处理 oldUrls 为 null 的情况，将其视为空字符串
        var oldTaskUrls = oldUrls.AllUrl().Distinct();
        var taskUrls = newUrls.AllUrl().Distinct().Select(s => s.RemoveDomain());

        // 删除不存在的（存在于旧集合但不在新集合中）
        var removedUrls = oldTaskUrls.Except(taskUrls).ToList();
        ossService.DeleteObjects(removedUrls);

        // 添加新增的（存在于新集合但不在旧集合中）
        var addedUrls = taskUrls.Except(oldTaskUrls).ToList();
        foreach (var item in addedUrls)
        {
            var value = $"{key}/{type}/{YitIdHelper.NextId()}.{item.ToExtension()}";
            ossService.CopyObject(item, value);

            newUrls = newUrls.Replace(item, value);

        }
        return newUrls;
    }
}