using Evergreen.Health.Application.Health.Entities;
using Evergreen.Health.Application.Health.Models;
using Furion.DatabaseAccessor;
using Furion.FriendlyException;
using Microsoft.AspNetCore.Http;
using SqlSugar;
using System.Security.Claims;
using System.Text.Json;

namespace Evergreen.Health.Application.Health.Services;

// 演示用四诊倾向，不等同于标准量表或医学诊断。
[ApiDescriptionSettings("健康管理", Name = "HealthTcmAssessment", Order = 52)]
public sealed class HealthTcmAssessmentService : IDynamicApiController, ITransient
{
    private readonly SqlSugarRepository<HealthProfile> _profiles;
    private readonly IHttpContextAccessor _http;

    public HealthTcmAssessmentService(SqlSugarRepository<HealthProfile> profiles, IHttpContextAccessor http)
    {
        _profiles = profiles;
        _http = http;
    }

    [Authorize]
    [HttpGet("/api/health/tcm-assessment")]
    public async Task<TcmAssessmentResult> GetAssessment()
    {
        var userId = CurrentUserId();
        var profile = await _profiles.GetFirstAsync(p => p.UserId == userId);
        return TcmConstitutionRules.Read(profile);
    }

    [Authorize]
    [HttpPost("/api/health/tcm-assessment")]
    [UnitOfWork]
    public async Task<TcmAssessmentResult> SaveAssessment(TcmAssessmentInput input)
    {
        var result = TcmConstitutionRules.Evaluate(input);
        var userId = CurrentUserId();
        var profile = await _profiles.GetFirstAsync(p => p.UserId == userId);
        if (profile == null)
        {
            profile = new HealthProfile { UserId = userId };
            profile.TcmAssessmentJson = JsonSerializer.Serialize(input);
            profile.TcmResultJson = JsonSerializer.Serialize(result);
            await _profiles.InsertAsync(profile);
        }
        else
        {
            profile.TcmAssessmentJson = JsonSerializer.Serialize(input);
            profile.TcmResultJson = JsonSerializer.Serialize(result);
            await _profiles.AsUpdateable(profile)
                .UpdateColumns(p => new { p.TcmAssessmentJson, p.TcmResultJson })
                .ExecuteCommandAsync();
        }
        return result;
    }

    private long CurrentUserId()
    {
        var claim = _http.HttpContext?.User.FindFirstValue("health_user_id");
        if (!long.TryParse(claim, out var userId))
            throw Oops.Oh("登录状态已失效").StatusCode(401);
        return userId;
    }
}

public static class TcmConstitutionRules
{
    private static readonly string[] Types =
    [
        "balanced", "qi_deficient", "yang_deficient", "yin_deficient",
        "phlegm_damp", "damp_heat", "blood_stasis", "qi_stagnation", "special"
    ];
    private static readonly Dictionary<string, string> Names = new()
    {
        ["balanced"] = "平和质", ["qi_deficient"] = "气虚质", ["yang_deficient"] = "阳虚质",
        ["yin_deficient"] = "阴虚质", ["phlegm_damp"] = "痰湿质", ["damp_heat"] = "湿热质",
        ["blood_stasis"] = "血瘀质", ["qi_stagnation"] = "气郁质", ["special"] = "特禀质"
    };
    private static readonly Dictionary<string, string[]> Choices = new()
    {
        ["face"] = ["rosy", "pale", "sallow", "flushed", "dusky"],
        ["body"] = ["balanced", "heavy", "thin", "abdominal"],
        ["spirit"] = ["energetic", "low", "tired"],
        ["voice"] = ["clear", "normal", "weak"],
        ["coldHeat"] = ["neutral", "cold", "hot"],
        ["sweating"] = ["normal", "easy", "little"],
        ["mouth"] = ["normal", "bland", "bitter", "dry"],
        ["stool"] = ["normal", "dry", "loose", "sticky"],
        ["sleep"] = ["good", "difficult", "waking", "dreams"],
        ["emotion"] = ["steady", "anxious", "depressed", "irritable"],
        ["pulse"] = ["normal", "wiry", "slippery", "thin", "rough", "deep", "floating", "weak", "unknown"],
        ["allergy"] = ["none", "often"]
    };

    private static readonly Dictionary<string, (string Type, int Points)[]> Weights = new()
    {
        ["face:pale"] = [("qi_deficient", 2), ("yang_deficient", 1)],
        ["face:sallow"] = [("qi_deficient", 2), ("phlegm_damp", 1)],
        ["face:flushed"] = [("yin_deficient", 2), ("damp_heat", 1)],
        ["face:dusky"] = [("blood_stasis", 3)],
        ["body:heavy"] = [("phlegm_damp", 3)],
        ["body:thin"] = [("yin_deficient", 2)],
        ["body:abdominal"] = [("phlegm_damp", 3), ("damp_heat", 1)],
        ["spirit:low"] = [("qi_deficient", 2)],
        ["spirit:tired"] = [("qi_deficient", 2), ("yang_deficient", 1)],
        ["voice:weak"] = [("qi_deficient", 2)],
        ["coldHeat:cold"] = [("yang_deficient", 4)],
        ["coldHeat:hot"] = [("yin_deficient", 2), ("damp_heat", 2)],
        ["sweating:easy"] = [("qi_deficient", 2)],
        ["sweating:little"] = [("yin_deficient", 1)],
        ["mouth:bland"] = [("yang_deficient", 1), ("phlegm_damp", 1)],
        ["mouth:bitter"] = [("damp_heat", 3)],
        ["mouth:dry"] = [("yin_deficient", 3)],
        ["stool:dry"] = [("yin_deficient", 2), ("damp_heat", 1)],
        ["stool:loose"] = [("yang_deficient", 2), ("qi_deficient", 1)],
        ["stool:sticky"] = [("damp_heat", 3), ("phlegm_damp", 2)],
        ["sleep:difficult"] = [("qi_stagnation", 2), ("yin_deficient", 1)],
        ["sleep:waking"] = [("qi_deficient", 1), ("yin_deficient", 1)],
        ["sleep:dreams"] = [("qi_stagnation", 2)],
        ["emotion:anxious"] = [("qi_stagnation", 3)],
        ["emotion:depressed"] = [("qi_stagnation", 3)],
        ["emotion:irritable"] = [("qi_stagnation", 2), ("damp_heat", 1)],
        ["pulse:wiry"] = [("qi_stagnation", 2)],
        ["pulse:slippery"] = [("phlegm_damp", 2), ("damp_heat", 1)],
        ["pulse:thin"] = [("yin_deficient", 2)],
        ["pulse:rough"] = [("blood_stasis", 3)],
        ["pulse:deep"] = [("yang_deficient", 1)],
        ["pulse:floating"] = [("qi_deficient", 1)],
        ["pulse:weak"] = [("qi_deficient", 2)],
        ["allergy:often"] = [("special", 6)]
    };

    public static TcmAssessmentResult Read(HealthProfile? profile)
    {
        if (string.IsNullOrWhiteSpace(profile?.TcmResultJson)) return new TcmAssessmentResult();
        try { return JsonSerializer.Deserialize<TcmAssessmentResult>(profile.TcmResultJson) ?? new TcmAssessmentResult(); }
        catch { return new TcmAssessmentResult(); }
    }

    public static TcmAssessmentResult Evaluate(TcmAssessmentInput input)
    {
        if (input?.Answers == null) throw Oops.Oh("请完成四诊问卷");
        foreach (var (field, choices) in Choices)
            if (!input.Answers.TryGetValue(field, out var answer) || !choices.Contains(answer))
                throw Oops.Oh($"四诊项目 {field} 未填写或选项无效");

        var scores = Types.ToDictionary(type => type, _ => 0);
        foreach (var (field, answer) in input.Answers)
            if (Weights.TryGetValue($"{field}:{answer}", out var weights))
                foreach (var (type, points) in weights) scores[type] += points;

        // 无明显偏颇时才判平和；同分时按固定顺序取值，结果可复现。
        var ranked = Types.Skip(1).OrderByDescending(type => scores[type]).ToList();
        var primary = scores[ranked[0]] < 3 ? "balanced" : ranked[0];
        var notes = (input.Notes ?? new Dictionary<string, string>())
            .Where(item => new[] { "tongue", "odor", "breath", "pulseNote" }.Contains(item.Key))
            .ToDictionary(item => item.Key, item => (item.Value ?? "").Trim()[..Math.Min((item.Value ?? "").Trim().Length, 300)]);
        var (aroma, music, room, humidity, kelvin, fragrance, volume) = primary switch
        {
            "qi_deficient" => ("清淡木香", "舒缓自然声", "22–25℃", 55, 3000, true, 14),
            "yang_deficient" => ("温暖木质香", "轻柔慢节奏", "24–26℃", 52, 2700, true, 14),
            "yin_deficient" => ("淡菊花香", "轻柔海浪声", "21–24℃", 48, 4000, true, 12),
            "phlegm_damp" => ("清新柑橘香", "舒缓雨声", "22–24℃", 45, 3500, true, 15),
            "damp_heat" => ("清淡薄荷香", "流水白噪音", "21–24℃", 45, 4000, true, 12),
            "blood_stasis" => ("淡花木香", "低频舒缓音乐", "23–25℃", 52, 3000, true, 14),
            "qi_stagnation" => ("清新柑橘香", "轻柔吉他曲", "22–25℃", 51, 3000, true, 14),
            "special" => ("建议不使用香氛，避免过敏原", "自然风声", "22–25℃", 50, 3500, false, 12),
            _ => ("淡雅薰衣草香", "自然雨声", "22–25℃", 50, 3000, true, 15)
        };
        return new TcmAssessmentResult
        {
            HasCompleted = true,
            ConstitutionCode = primary,
            ConstitutionName = Names[primary],
            Summary = $"根据本次望闻问切选择，演示规则提示您偏向{Names[primary]}。仅作健康生活方式参考，不作为诊断。",
            AromaRecommendation = input.Answers["allergy"] == "often"
                ? "建议不使用香氛，避免过敏原" : aroma,
            MusicRecommendation = music,
            RoomTemperatureRecommendation = room,
            Scores = scores,
            Answers = Choices.Keys.ToDictionary(key => key, key => input.Answers[key]),
            Notes = notes,
            AssessedAt = DateTime.Now,
            SceneConfig = new PersonalizedSceneConfig
            {
                TargetHumidity = humidity, DehumidifierMode = "睡眠", FanLevel = "1档",
                LightBrightnessPercent = 20, LightColorTemperatureKelvin = kelvin,
                MattressHeatingLevel = 0, MattressLeftFirmness = 0, MattressRightFirmness = 0,
                MattressMode = "智能适配",
                EnableFragrance = fragrance && input.Answers["allergy"] != "often", FragranceLevel = 1,
                EnableSpeakerSleepMode = true, SpeakerVolumePercent = volume
            }
        };
    }
}