package service

import (
	"context"
	"time"

	"git.huangwc.com/pig/pig-farm-controller/internal/app/dto"
	domainAlarm "git.huangwc.com/pig/pig-farm-controller/internal/domain/alarm"
	"git.huangwc.com/pig/pig-farm-controller/internal/infra/logs"
	"git.huangwc.com/pig/pig-farm-controller/internal/infra/repository"
)

// ThresholdAlarmService 定义了阈值告警配置服务的接口。
// 该服务负责管理阈值告警任务的配置，并将其与计划进行联动。
type ThresholdAlarmService interface {
	// SnoozeThresholdAlarm 忽略一个阈值告警，或更新其忽略时间。
	SnoozeThresholdAlarm(ctx context.Context, alarmID uint, durationMinutes uint) error
	// CancelSnoozeThresholdAlarm 取消对一个阈值告警的忽略状态。
	CancelSnoozeThresholdAlarm(ctx context.Context, alarmID uint) error
	// ListActiveAlarms 批量查询活跃告警。
	ListActiveAlarms(ctx context.Context, req *dto.ListActiveAlarmRequest) (*dto.ListActiveAlarmResponse, error)
	// ListHistoricalAlarms 批量查询历史告警。
	ListHistoricalAlarms(ctx context.Context, req *dto.ListHistoricalAlarmRequest) (*dto.ListHistoricalAlarmResponse, error)
}

// thresholdAlarmService 是 ThresholdAlarmService 接口的具体实现。
type thresholdAlarmService struct {
	ctx          context.Context
	alarmService domainAlarm.AlarmService
	alarmRepo    repository.AlarmRepository
}

// NewThresholdAlarmService 创建一个新的 ThresholdAlarmService 实例。
func NewThresholdAlarmService(ctx context.Context, alarmService domainAlarm.AlarmService, alarmRepo repository.AlarmRepository) ThresholdAlarmService {
	return &thresholdAlarmService{
		ctx:          ctx,
		alarmService: alarmService,
		alarmRepo:    alarmRepo,
	}
}

// SnoozeThresholdAlarm 实现了忽略阈值告警的逻辑。
func (s *thresholdAlarmService) SnoozeThresholdAlarm(ctx context.Context, alarmID uint, durationMinutes uint) error {
	serviceCtx := logs.AddFuncName(ctx, s.ctx, "SnoozeThresholdAlarm")
	return s.alarmService.SnoozeAlarm(serviceCtx, alarmID, time.Duration(durationMinutes)*time.Minute)
}

// CancelSnoozeThresholdAlarm 实现了取消忽略阈值告警的逻辑。
func (s *thresholdAlarmService) CancelSnoozeThresholdAlarm(ctx context.Context, alarmID uint) error {
	serviceCtx := logs.AddFuncName(ctx, s.ctx, "CancelSnoozeThresholdAlarm")
	return s.alarmService.CancelAlarmSnooze(serviceCtx, alarmID)
}

// ListActiveAlarms 实现了批量查询活跃告警的逻辑。
func (s *thresholdAlarmService) ListActiveAlarms(ctx context.Context, req *dto.ListActiveAlarmRequest) (*dto.ListActiveAlarmResponse, error) {
	serviceCtx := logs.AddFuncName(ctx, s.ctx, "ListActiveAlarms")

	opts := repository.ActiveAlarmListOptions{
		SourceType:  req.SourceType,
		SourceID:    req.SourceID,
		Level:       req.Level,
		IsIgnored:   req.IsIgnored,
		TriggerTime: req.TriggerTime,
		EndTime:     req.EndTime,
		OrderBy:     req.OrderBy,
	}

	alarms, total, err := s.alarmRepo.ListActiveAlarms(serviceCtx, opts, req.Page, req.PageSize)
	if err != nil {
		return nil, err
	}

	return dto.NewListActiveAlarmResponse(alarms, total, req.Page, req.PageSize), nil
}

// ListHistoricalAlarms 实现了批量查询历史告警的逻辑。
func (s *thresholdAlarmService) ListHistoricalAlarms(ctx context.Context, req *dto.ListHistoricalAlarmRequest) (*dto.ListHistoricalAlarmResponse, error) {
	serviceCtx := logs.AddFuncName(ctx, s.ctx, "ListHistoricalAlarms")

	opts := repository.HistoricalAlarmListOptions{
		SourceType:       req.SourceType,
		SourceID:         req.SourceID,
		Level:            req.Level,
		TriggerTimeStart: req.TriggerTimeStart,
		TriggerTimeEnd:   req.TriggerTimeEnd,
		ResolveTimeStart: req.ResolveTimeStart,
		ResolveTimeEnd:   req.ResolveTimeEnd,
		OrderBy:          req.OrderBy,
	}

	alarms, total, err := s.alarmRepo.ListHistoricalAlarms(serviceCtx, opts, req.Page, req.PageSize)
	if err != nil {
		return nil, err
	}

	return dto.NewListHistoricalAlarmResponse(alarms, total, req.Page, req.PageSize), nil
}