using MiaoJiZhang.Domain.Entities;
using MiaoJiZhang.Infrastructure.Persistence;
using Microsoft.EntityFrameworkCore;

namespace MiaoJiZhang.Api.Services;

public static class AppConfigDefaults
{
    public static readonly IReadOnlyDictionary<string, string> Values =
        new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
        {
            ["brand.app_name"] = "记之",
            ["brand.slogan"] = "会聊天的记账本 · 让 AI 帮你管钱",
            ["brand.logo_url"] = "",
            ["llm.protocol"] = "responses",
            ["llm.base_url"] = "https://api.openai.com/v1",
            ["llm.model"] = "gpt-4o-mini",
            ["llm.max_tokens"] = "1024",
            ["llm.temperature"] = "0.7",
            ["limit.daily_ai_messages"] = "200",
            ["limit.daily_ai_messages_per_user"] = "50",
            ["limit.max_monthly_budget"] = "99999999",
            ["feature.ocr_enabled"] = "true",
            ["feature.voice_enabled"] = "true",
            ["feature.ai_auto_book"] = "true",
            ["feature.sticker_enabled"] = "true",
            ["feature.screenshot_bookkeeping_enabled"] = "true",
            ["permission.default.ai_enabled"] = "true",
            ["quota.default_ai_chat_limit"] = "50",
            ["quota.default_ai_chat_period"] = "day",
            ["system.default_ledger_name"] = "日常账本",
            ["system.max_ledgers_per_user"] = "10",
        };

    public static async Task<int> EnsureAsync(
        AppDbContext db,
        CancellationToken ct = default)
    {
        var existing = await db.AppConfigs
            .Select(config => config.Key)
            .ToListAsync(ct);
        var keys = existing.ToHashSet(StringComparer.OrdinalIgnoreCase);
        var now = DateTime.UtcNow;
        var added = 0;
        foreach (var (key, value) in Values)
        {
            if (keys.Contains(key)) continue;
            db.AppConfigs.Add(new AppConfig
            {
                Key = key,
                Value = value,
                Version = 1,
                UpdatedAt = now,
            });
            added++;
        }
        if (added > 0) await db.SaveChangesAsync(ct);
        return added;
    }
}