179 lines
7.9 KiB
C#
179 lines
7.9 KiB
C#
using System.Text.RegularExpressions;
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using MiaoJiZhang.Domain.Entities;
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using MiaoJiZhang.Domain.Enums;
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using MiaoJiZhang.Infrastructure.Persistence;
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using Microsoft.EntityFrameworkCore;
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namespace MiaoJiZhang.Api.Services;
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public record ParsedBill(
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TransactionType Type,
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long CategoryId,
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string CategoryName,
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string Note,
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decimal Amount,
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string? PaymentMethod,
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DateTime? OccurredAt = null,
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TransferDirection? TransferDirection = null,
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string? Counterparty = null);
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public record IntentResult(string Kind, ParsedBill? Bill); // bill | query | chat
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/// <summary>
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/// Cleans legacy AI notes for list display only. It never decides intent, type, or category.
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/// </summary>
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public static class TransactionNoteFormatter
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{
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private static readonly Regex AmountRegex = new(
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@"(?<!\d)(\d+(?:\.\d{1,2})?)\s*(?:元|块钱|块|rmb|人民币)?",
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RegexOptions.IgnoreCase | RegexOptions.Compiled);
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public static string BuildNote(string sourceText, string fallback)
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{
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var note = AmountRegex.Replace(sourceText, " ");
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note = Regex.Replace(
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note,
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@"(?:微信|支付宝|现金)(?:支付|付款|收款)?",
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" ");
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note = Regex.Replace(
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note,
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@"^\s*(?:(?:今天|昨天|刚才|刚刚|我|我们)\s*)+",
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"");
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note = Regex.Replace(
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note,
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@"^\s*(?:在)?(?:淘宝|京东|拼多多|美团|饿了么)\s*",
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"");
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note = Regex.Replace(
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note,
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@"^\s*(?:赚了?|赚到|挣了?|挣到|收到|获得|领到|收入|入账|进账|到账|发了?|发放|报销了?|退款了?|退回|返现)\s*",
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"");
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note = Regex.Replace(
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note,
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@"^\s*(?:买了|买|花了|花|付了|支付了|消费了|吃了|吃|喝了|喝)\s*",
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"");
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note = Regex.Replace(
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note,
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@"\s*(?:花了|花|用了|付了|支付了|消费了|赚了|挣了|到账|入账)\s*$",
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"");
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note = Regex.Replace(note, @"[，。！？,.!?:：；\s]+", " ").Trim();
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if (string.IsNullOrWhiteSpace(note)) note = fallback;
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return note.Length > 20 ? note[..20] : note;
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}
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}
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/// <summary>
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/// AI 回复文案生成。当前为模板版（性格 × 口癖），后续接 LLM。
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/// 性格模板与口癖均来自数据库（后台可配 —— 决策：Prompt 后台可调）。
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/// </summary>
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public class ReplyService(AppDbContext db)
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{
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public async Task<string> BillReplyAsync(long userId, ParsedBill bill)
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{
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var (persona, tic) = await GetPersonaAsync(userId);
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var action = bill.Type switch
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{
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TransactionType.Income => "收入",
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TransactionType.Transfer when bill.TransferDirection == TransferDirection.In => "转入",
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TransactionType.Transfer => "转出",
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_ => "支出",
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};
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var body = persona switch
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{
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"gentle" => $"{action}记好啦～{bill.CategoryName} ¥{bill.Amount:F2}",
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"strict" => $"已记录{action}：{bill.CategoryName} ¥{bill.Amount:F2}。",
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"meme" => $"{action}记上了！{bill.CategoryName} ¥{bill.Amount:F2}，家人们谁懂啊",
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_ => bill.Type.IsIncome(bill.TransferDirection)
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? $"收入到账！{bill.CategoryName} ¥{bill.Amount:F2}，钱包回血啦"
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: $"记好了！{bill.CategoryName} ¥{bill.Amount:F2}，这笔支出我帮你盯着",
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};
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return ApplyTic(body, persona, tic);
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}
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public async Task<string> QueryReplyAsync(long userId, decimal topAmount, string topCategory, double percent)
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{
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var (persona, tic) = await GetPersonaAsync(userId);
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var body = persona switch
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{
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"gentle" => $"这个月「{topCategory}」花得最多，¥{topAmount:F0}（占 {percent:F0}%）～ 要不要我帮你定个小目标呀？",
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"strict" => $"本月最大支出分类：{topCategory} ¥{topAmount:F2}，占总支出 {percent:F0}%。建议设置分类预算。",
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"meme" => $"必须是「{topCategory}」！¥{topAmount:F0}，占了 {percent:F0}%，你这钱包是碎钞机吧 2333",
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_ => $"是「{topCategory}」¥{topAmount:F0}（占 {percent:F0}%）！继续这么花，月底吃土",
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};
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return ApplyTic(body, persona, tic);
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}
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public async Task<string> ChatReplyAsync(long userId)
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{
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var (persona, tic) = await GetPersonaAsync(userId);
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var body = persona == "gentle"
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? "嗯嗯我在听～要记账直接说金额就行哦"
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: "在听。想记账就直接说，比如「午饭 26」";
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return ApplyTic(body, persona, tic);
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}
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public Task<string> MonthlyRoastAsync(
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long userId,
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decimal income,
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decimal expense,
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string topCategory,
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decimal topAmount) =>
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PeriodRoastAsync(userId, "这个月", income, expense, topCategory, topAmount);
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public async Task<string> PeriodRoastAsync(
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long userId,
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string periodLabel,
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decimal income,
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decimal expense,
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string topCategory,
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decimal topAmount)
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{
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var (persona, tic) = await GetPersonaAsync(userId);
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var ratio = income == 0 ? "N/A" : $"{expense / income * 100:F0}%";
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var body = persona switch
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{
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"gentle" => $"{periodLabel}收入 ¥{income:F0}、支出 ¥{expense:F0}，「{topCategory}」花了 ¥{topAmount:F0}。我们一起把结余慢慢提高一点吧。",
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"strict" => $"{periodLabel}收支比 {ratio}。最大支出分类「{topCategory}」¥{topAmount:F2}，建议继续按预算复盘。",
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"meme" => $"{periodLabel}收入 ¥{income:F0}，支出 ¥{expense:F0}，「{topCategory}」就干掉 ¥{topAmount:F0}，钱包这波压力不小。",
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_ => $"{periodLabel}收入 ¥{income:F0}，「{topCategory}」花了 ¥{topAmount:F0}。下个周期这个分类我会继续帮你盯着。",
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};
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return ApplyTic(body, persona, tic);
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}
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/// <summary>表情包回复（按性格；用户发表情包时调用）</summary>
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public async Task<(string Text, string? StickerKey)> StickerReplyAsync(long userId, string stickerKey)
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{
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var (persona, tic) = await GetPersonaAsync(userId);
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if (stickerKey == "salary")
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{
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var t = persona == "strict" ? "检测到收入信号。请报具体金额，我来记录。" : ApplyTic("哦？发工资了？多少多少，快报数，我帮你记收入！", persona, tic);
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return (t, null);
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}
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var text = persona switch
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{
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"gentle" => "哈哈收到～心情好最重要啦",
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"strict" => "已收到。请继续保持记账习惯。",
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"meme" => "哈哈哈哈这表情包我先存了",
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_ => ApplyTic("卖萌也没用！该省还得省", persona, tic),
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};
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// 回一个表情包（毒舌回生气，温柔回开心）
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var replySticker = persona == "gentle" ? "happy" : "angry";
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return (text, replySticker);
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}
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private async Task<(string Persona, string Tic)> GetPersonaAsync(long userId)
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{
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var setting = await db.AiCompanionSettings.FirstOrDefaultAsync(s => s.UserId == userId);
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var personaKey = setting?.PersonaKey ?? "sassy_cat";
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var avatarKey = setting?.AvatarKey ?? "cat";
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var tic = await db.AiAvatars.Where(a => a.Key == avatarKey)
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.Select(a => a.SpeechTic).FirstOrDefaultAsync() ?? "";
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return (personaKey, tic);
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}
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/// <summary>口癖跟随形象（决策 20）；严格管家不用口癖</summary>
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private static string ApplyTic(string text, string persona, string tic)
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{
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if (string.IsNullOrEmpty(tic) || persona == "strict") return text;
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return text + tic;
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}
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}
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