using System.Data;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using Milimoe.FunGame.Core.Api.Transmittal;
using Milimoe.FunGame.WebAPI.Models;

namespace Milimoe.FunGame.WebAPI.Controllers
{
    [Authorize(AuthenticationSchemes = "CustomBearer")]
    [ApiController]
    [Route("[controller]")]
    public class APIController(SQLHelper sql, ILogger<APIController> logger) : ControllerBase
    {
        [HttpPost("scadd")]
        public string SCAdd([FromBody] SCDTO dto)
        {
            long uid = dto.UID;
            long group = dto.Group;
            double sc = dto.SC;
            int year = dto.Year;
            int month = dto.Month;
            string content = dto.Content;
            string result = "";
            if (year == 0) year = DateTime.Today.Year;
            if (month == 0) month = DateTime.Today.Month;

            try
            {
                sql.NewTransaction();
                sql.Script = "select * from saints where uid = @uid and `group` = @group and `year` = @year and `month` = @month";
                sql.Parameters.Add("uid", uid);
                sql.Parameters.Add("group", group);
                sql.Parameters.Add("year", year);
                sql.Parameters.Add("month", month);
                sql.ExecuteDataSet();
                string record = "";
                if (sql.Success)
                {
                    record = Convert.ToString(sql.DataSet.Tables[0].Rows[0]["record"]) ?? "";
                }
                record = $"{DateTime.Now:MM/dd HH:mm}：{content}（{(sc < 0 ? "-" : "+") + Math.Abs(sc)}）\r\n{record}";
                record = string.Join("\r\n", record.Split("\r\n", StringSplitOptions.RemoveEmptyEntries).Take(10));
                if (sql.Success)
                {
                    sql.Script = "update saints set sc = sc + @sc, times = times + 1, record = @record where uid = @uid and `group` = @group and `year` = @year and `month` = @month";
                }
                else
                {
                    sql.Script = "insert into saints(uid, sc, times, `group`, `year`, `month`, record) values(@uid, @sc, 1, @group, @year, @month, @record)";
                }
                sql.Parameters.Add("sc", sc);
                sql.Parameters.Add("uid", uid);
                sql.Parameters.Add("group", group);
                sql.Parameters.Add("year", year);
                sql.Parameters.Add("month", month);
                sql.Parameters.Add("record", record);
                sql.Execute();
                if (sql.Success)
                {
                    logger.LogDebug("用户 {uid} 的圣人点数增加了 {sc}", uid, sc);
                    sql.Commit();
                }
                else
                {
                    sql.Rollback();
                }
            }
            catch (Exception e)
            {
                result = e.ToString();
                sql.Rollback();
            }

            return result;
        }

        [HttpGet("sclist")]
        public string SCList(long id, long group, int year = 0, int month = 0, bool reverse = false)
        {
            string result;
            if (year == 0) year = DateTime.Today.Year;
            if (month == 0) month = DateTime.Today.Month;
            string season = $"{year} 年 {month} 月赛季";

            (bool userHas, double userSC, int userTimes, int userTop, string userRemark) = (false, 0, 0, 0, "");
            if (!reverse)
            {
                result = $"☆--- OSMTV 圣人排行榜 TOP10 ---☆\r\n{season}\r\n";
            }
            else
            {
                result = $"☆--- OSMTV 出生排行榜 TOP10 ---☆\r\n{season}\r\n";
            }
            sql.Script = "select * from saints where `group` = @group and `year` = @year and `month` = @month order by sc" + (!reverse ? " desc" : "");
            sql.Parameters.Add("group", group);
            sql.Parameters.Add("year", year);
            sql.Parameters.Add("month", month);
            sql.ExecuteDataSet();
            if (sql.Success && sql.DataSet.Tables.Count > 0)
            {
                int count = 0;
                foreach (DataRow dr in sql.DataSet.Tables[0].Rows)
                {
                    count++;
                    long uid = Convert.ToInt64(dr["uid"]);
                    double sc = Convert.ToDouble(dr["sc"]);
                    int times = Convert.ToInt32(dr["times"]);
                    string remark = Convert.ToString(dr["remark"]) ?? "";
                    if (reverse)
                    {
                        sc = -sc;
                        remark = remark.Replace("+", "-");
                    }
                    if (uid == id)
                    {
                        userHas = true;
                        userSC = sc;
                        userTimes = times;
                        userTop = count;
                        userRemark = remark;
                    }
                    if (count > 10) continue;
                    if (!reverse)
                    {
                        result += $"{count}. 用户：{uid}，圣人点数：{sc} 分（{times} 次）{(remark.Trim() != "" ? $" ({remark})" : "")}\r\n";
                    }
                    else
                    {
                        result += $"{count}. 用户：{uid}，出生点数：{sc} 分（{times} 次）{(remark.Trim() != "" ? $" ({remark})" : "")}\r\n";
                    }
                }
                if (!reverse && userHas)
                {
                    result += $"你在的圣人点数为：{userSC} 分{(userRemark.Trim() != "" ? $"（{userRemark}）" : "")}（累计有效：{userTimes} 次），排在 {season}第 {userTop} / {sql.DataSet.Tables[0].Rows.Count} 名。\r\n" +
                        $"本排行榜仅供娱乐，不代表任何官方立场或真实情况。";
                }
                if (reverse && userHas)
                {
                    result += $"你在的出生点数为：{userSC} 分{(userRemark.Trim() != "" ? $"（{userRemark}）" : "")}（累计有效：{userTimes} 次），排在 {season}的出生榜第 {userTop} / {sql.DataSet.Tables[0].Rows.Count} 名。\r\n" +
                        $"本排行榜仅供娱乐，不代表任何官方立场或真实情况。";
                }
            }
            else
            {
                if (reverse)
                {
                    result = "出生榜目前没有任何数据。";
                }
                else
                {
                    result = "圣人榜目前没有任何数据。";
                }
            }

            return result.Trim();
        }

        [HttpGet("screcord")]
        public string SCRecord(long id, long group, int year = 0, int month = 0)
        {
            string result = "";
            if (year == 0) year = DateTime.Today.Year;
            if (month == 0) month = DateTime.Today.Month;
            string season = $"{year} 年 {month} 月赛季";

            result = $"☆--- 圣人点数信息 ---☆\r\n{season}\r\n";
            sql.Script = "select * from saints where `group` = @group and `year` = @year and `month` = @month order by sc desc";
            sql.Parameters.Add("uid", id);
            sql.Parameters.Add("group", group);
            sql.Parameters.Add("year", year);
            sql.Parameters.Add("month", month);
            sql.ExecuteDataSet();
            if (sql.Success && sql.DataSet.Tables.Count > 0)
            {
                Dictionary<int, DataRow> dict = sql.DataSet.Tables[0].AsEnumerable().Select((r, i) => new { Index = i + 1, Row = r }).ToDictionary(c => c.Index, c => c.Row);
                int index = dict.Where(kv => Convert.ToInt64(kv.Value["uid"]) == id).Select(r => r.Key).FirstOrDefault();
                if (index != 0 && dict.TryGetValue(index, out DataRow? dr) && dr != null)
                {
                    long uid = Convert.ToInt64(dr["uid"]);
                    double sc = Convert.ToDouble(dr["sc"]);
                    int times = Convert.ToInt32(dr["times"]);
                    string remark = Convert.ToString(dr["remark"]) ?? "";
                    string record = Convert.ToString(dr["record"]) ?? "";
                    result += $"用户：{uid}，圣人点数：{sc} 分{(remark.Trim() != "" ? $" ({remark})" : "")}（累计有效：{times} 次），排在 {season}圣人榜第 {index} / {sql.DataSet.Tables[0].Rows.Count} 名。\r\n" +
                        $"{(record != "" ? "显示近期点数变动信息：\r\n" + record + "\r\n" : "")}本系统仅供娱乐，不代表任何官方立场或真实情况。";
                }
                else
                {
                    result = $"你在这个群没有任何 {season}的历史记录。";
                }
            }
            else
            {
                result = $"你在这个群没有任何 {season}的历史记录。";
            }

            return result.Trim();
        }
    }
}