package controller

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"one-api/common"
	"one-api/constant"
	"one-api/dto"
	"one-api/logger"
	"one-api/model"
	"one-api/relay"
	"one-api/relay/channel"
	relaycommon "one-api/relay/common"
	"time"
)

func UpdateVideoTaskAll(ctx context.Context, platform constant.TaskPlatform, taskChannelM map[int][]string, taskM map[string]*model.Task) error {
	for channelId, taskIds := range taskChannelM {
		if err := updateVideoTaskAll(ctx, platform, channelId, taskIds, taskM); err != nil {
			logger.LogError(ctx, fmt.Sprintf("Channel #%d failed to update video async tasks: %s", channelId, err.Error()))
		}
	}
	return nil
}

func updateVideoTaskAll(ctx context.Context, platform constant.TaskPlatform, channelId int, taskIds []string, taskM map[string]*model.Task) error {
	logger.LogInfo(ctx, fmt.Sprintf("Channel #%d pending video tasks: %d", channelId, len(taskIds)))
	if len(taskIds) == 0 {
		return nil
	}
	cacheGetChannel, err := model.CacheGetChannel(channelId)
	if err != nil {
		errUpdate := model.TaskBulkUpdate(taskIds, map[string]any{
			"fail_reason": fmt.Sprintf("Failed to get channel info, channel ID: %d", channelId),
			"status":      "FAILURE",
			"progress":    "100%",
		})
		if errUpdate != nil {
			common.SysLog(fmt.Sprintf("UpdateVideoTask error: %v", errUpdate))
		}
		return fmt.Errorf("CacheGetChannel failed: %w", err)
	}
	adaptor := relay.GetTaskAdaptor(platform)
	if adaptor == nil {
		return fmt.Errorf("video adaptor not found")
	}
	for _, taskId := range taskIds {
		if err := updateVideoSingleTask(ctx, adaptor, cacheGetChannel, taskId, taskM); err != nil {
			logger.LogError(ctx, fmt.Sprintf("Failed to update video task %s: %s", taskId, err.Error()))
		}
	}
	return nil
}

func updateVideoSingleTask(ctx context.Context, adaptor channel.TaskAdaptor, channel *model.Channel, taskId string, taskM map[string]*model.Task) error {
	baseURL := constant.ChannelBaseURLs[channel.Type]
	if channel.GetBaseURL() != "" {
		baseURL = channel.GetBaseURL()
	}

	task := taskM[taskId]
	if task == nil {
		logger.LogError(ctx, fmt.Sprintf("Task %s not found in taskM", taskId))
		return fmt.Errorf("task %s not found", taskId)
	}
	resp, err := adaptor.FetchTask(baseURL, channel.Key, map[string]any{
		"task_id": taskId,
		"action":  task.Action,
	})
	if err != nil {
		return fmt.Errorf("fetchTask failed for task %s: %w", taskId, err)
	}
	//if resp.StatusCode != http.StatusOK {
	//return fmt.Errorf("get Video Task status code: %d", resp.StatusCode)
	//}
	defer resp.Body.Close()
	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		return fmt.Errorf("readAll failed for task %s: %w", taskId, err)
	}

	taskResult := &relaycommon.TaskInfo{}
	// try parse as New API response format
	var responseItems dto.TaskResponse[model.Task]
	if err = json.Unmarshal(responseBody, &responseItems); err == nil && responseItems.IsSuccess() {
		t := responseItems.Data
		taskResult.TaskID = t.TaskID
		taskResult.Status = string(t.Status)
		taskResult.Url = t.FailReason
		taskResult.Progress = t.Progress
		taskResult.Reason = t.FailReason
	} else if taskResult, err = adaptor.ParseTaskResult(responseBody); err != nil {
		return fmt.Errorf("parseTaskResult failed for task %s: %w", taskId, err)
	} else {
		task.Data = responseBody
	}

	now := time.Now().Unix()
	if taskResult.Status == "" {
		return fmt.Errorf("task %s status is empty", taskId)
	}
	task.Status = model.TaskStatus(taskResult.Status)
	switch taskResult.Status {
	case model.TaskStatusSubmitted:
		task.Progress = "10%"
	case model.TaskStatusQueued:
		task.Progress = "20%"
	case model.TaskStatusInProgress:
		task.Progress = "30%"
		if task.StartTime == 0 {
			task.StartTime = now
		}
	case model.TaskStatusSuccess:
		task.Progress =	 "100%"
		if task.FinishTime == 0 {
			task.FinishTime = now
		}
		task.FailReason = taskResult.Url
	case model.TaskStatusFailure:
		task.Status = model.TaskStatusFailure
		task.Progress = "100%"
		if task.FinishTime == 0 {
			task.FinishTime = now
		}
		task.FailReason = taskResult.Reason
		logger.LogInfo(ctx, fmt.Sprintf("Task %s failed: %s", task.TaskID, task.FailReason))
		quota := task.Quota
		if quota != 0 {
			if err := model.IncreaseUserQuota(task.UserId, quota, false); err != nil {
				logger.LogError(ctx, "Failed to increase user quota: "+err.Error())
			}
			logContent := fmt.Sprintf("Video async task failed %s, refund %s", task.TaskID, logger.LogQuota(quota))
			model.RecordLog(task.UserId, model.LogTypeSystem, logContent)
		}
	default:
		return fmt.Errorf("unknown task status %s for task %s", taskResult.Status, taskId)
	}
	if taskResult.Progress != "" {
		task.Progress = taskResult.Progress
	}
	if err := task.Update(); err != nil {
		common.SysLog("UpdateVideoTask task error: " + err.Error())
	}

	return nil
}
