using Evergreen.Health.Application.Health.Entities;
using SqlSugar;

namespace Evergreen.Health.Application.Health.Integrations.Ib43;

// 仅由本地维护程序调用；不是 Controller，也不注册 HTTP 路由。
public sealed class Ib43LocalBinding(ISqlSugarClient db, TimeProvider clock)
{
    public async Task<HealthIb43Binding> Run(string phone, Ib43Options options, string actor, bool apply)
    {
        var device = options.Devices.SingleOrDefault(d => d.ProductKey == "evergreen-test" && d.SerialNumber == "IB43SIM001");
        if (device?.Simulation != true) throw new InvalidOperationException("模拟设备白名单不匹配，已停止。");
        var users = await db.Queryable<HealthUser>().Where(u => u.Phone == phone && !u.IsDelete &&
            u.Status == HealthUserStatus.Enabled).Select(u => new { u.Id }).ToListAsync();
        if (users.Count != 1) throw new InvalidOperationException("未找到唯一且已启用的健康账号，已停止。");
        var key = Ib43DataRepository.DeviceKey(device.ProductKey, device.SerialNumber);
        var slot = key + ".left";
        var existing = await db.Queryable<HealthIb43Binding>().Where(b => b.ActiveSlot == slot).FirstAsync();
        if (existing != null)
        {
            if (existing.UserId != users[0].Id || !existing.Simulation || existing.EndedAtMs != null)
                throw new InvalidOperationException("左侧已被其他用户或非模拟绑定占用，未覆盖或解绑。");
            return existing;
        }
        var binding = new HealthIb43Binding
        {
            DeviceKey = key, ProductKey = device.ProductKey, SerialNumber = device.SerialNumber,
            Side = "left", ActiveSlot = slot, UserId = users[0].Id, BedName = "IB43模拟床垫左侧",
            Simulation = true, StartedAtMs = clock.GetUtcNow().ToUnixTimeMilliseconds(), AssignedBy = 0
        };
        if (!apply) return binding;
        if (string.IsNullOrWhiteSpace(actor) || actor.Length > 200) throw new InvalidOperationException("维护操作者信息不合法。");
        var stage = "binding";
        await db.Ado.BeginTranAsync();
        try
        {
            await db.Insertable(binding).ExecuteCommandAsync();
            stage = "audit";
            await db.Insertable(new HealthIb43MaintenanceAudit
            {
                Id = Guid.NewGuid().ToString("N"), BindingId = binding.Id, UserId = binding.UserId,
                Actor = actor, OccurredAtMs = binding.StartedAtMs, Operation = "local-bind-simulator-left"
            }).ExecuteCommandAsync();
            stage = "commit";
            await db.Ado.CommitTranAsync();
        }
        catch (Exception error)
        {
            await db.Ado.RollbackTranAsync();
            var code = error is MySqlConnector.MySqlException mysql ? $" MySQL {mysql.Number}" : "";
            throw new InvalidOperationException($"绑定事务失败 ({stage}, {error.GetType().Name}{code})，请重新预检确认数据库状态。", error);
        }
        return binding;
    }
}