package doubao_aiping

import (
	"bytes"
	"fmt"
	"io"
	"net/http"
	"strconv"
	"strings"
	"time"

	"github.com/QuantumNous/new-api/common"
	"github.com/QuantumNous/new-api/constant"
	"github.com/QuantumNous/new-api/dto"
	"github.com/QuantumNous/new-api/model"
	"github.com/QuantumNous/new-api/relay/channel"
	taskcommon "github.com/QuantumNous/new-api/relay/channel/task/taskcommon"
	relaycommon "github.com/QuantumNous/new-api/relay/common"
	"github.com/QuantumNous/new-api/service"
	relaytypes "github.com/QuantumNous/new-api/types"
	"github.com/gin-gonic/gin"
	"github.com/pkg/errors"
	"github.com/samber/lo"
)

type ContentItem struct {
	Type      string     `json:"type,omitempty"`
	Text      string     `json:"text,omitempty"`
	ImageURL  *MediaURL  `json:"image_url,omitempty"`
	VideoURL  *MediaURL  `json:"video_url,omitempty"`
	AudioURL  *MediaURL  `json:"audio_url,omitempty"`
	DraftTask *DraftTask `json:"draft_task,omitempty"`
	Role      string     `json:"role,omitempty"`
}

type MediaURL struct {
	URL string `json:"url,omitempty"`
}

type DraftTask struct {
	ID string `json:"id,omitempty"`
}

type requestPayload struct {
	Model                 string         `json:"model"`
	Content               []ContentItem  `json:"content,omitempty"`
	CallbackURL           string         `json:"callback_url,omitempty"`
	ReturnLastFrame       *dto.BoolValue `json:"return_last_frame,omitempty"`
	ServiceTier           string         `json:"service_tier,omitempty"`
	ExecutionExpiresAfter *dto.IntValue  `json:"execution_expires_after,omitempty"`
	GenerateAudio         *dto.BoolValue `json:"generate_audio,omitempty"`
	Draft                 *dto.BoolValue `json:"draft,omitempty"`
	Tools                 []struct {
		Type string `json:"type,omitempty"`
	} `json:"tools,omitempty"`
	Resolution       string         `json:"resolution,omitempty"`
	Ratio            string         `json:"ratio,omitempty"`
	Duration         *dto.IntValue  `json:"duration,omitempty"`
	Frames           *dto.IntValue  `json:"frames,omitempty"`
	Seed             *dto.IntValue  `json:"seed,omitempty"`
	CameraFixed      *dto.BoolValue `json:"camera_fixed,omitempty"`
	Watermark        *dto.BoolValue `json:"watermark,omitempty"`
	SafetyIdentifier string         `json:"safety_identifier,omitempty"`
	Priority         *dto.IntValue  `json:"priority,omitempty"`
}

type responsePayload struct {
	ID string `json:"id"`
}

type responseTask struct {
	ID      string `json:"id"`
	Model   string `json:"model"`
	Status  string `json:"status"`
	Content struct {
		VideoURL string `json:"video_url"`
	} `json:"content"`
	Seed            int    `json:"seed"`
	Resolution      string `json:"resolution"`
	Duration        int    `json:"duration"`
	Ratio           string `json:"ratio"`
	FramesPerSecond int    `json:"framespersecond"`
	ServiceTier     string `json:"service_tier"`
	Usage           struct {
		CompletionTokens int `json:"completion_tokens"`
		TotalTokens      int `json:"total_tokens"`
	} `json:"usage"`
	Error struct {
		Code    string `json:"code"`
		Message string `json:"message"`
	} `json:"error"`
	CreatedAt int64 `json:"created_at"`
	UpdatedAt int64 `json:"updated_at"`
}

type TaskAdaptor struct {
	taskcommon.BaseBilling
	ChannelType int
	apiKey      string
	baseURL     string
}

func (a *TaskAdaptor) Init(info *relaycommon.RelayInfo) {
	a.ChannelType = info.ChannelType
	a.baseURL = strings.TrimRight(info.ChannelBaseUrl, "/")
	a.apiKey = info.ApiKey
}

func (a *TaskAdaptor) ValidateRequestAndSetAction(c *gin.Context, info *relaycommon.RelayInfo) (taskErr *dto.TaskError) {
	if _, err := relaycommon.GetTaskRequest(c); err == nil {
		info.Action = constant.TaskActionGenerate
		return nil
	}
	return relaycommon.ValidateBasicTaskRequest(c, info, constant.TaskActionGenerate)
}

func (a *TaskAdaptor) BuildRequestURL(info *relaycommon.RelayInfo) (string, error) {
	baseURL := a.baseURL
	if strings.TrimSpace(baseURL) == "" && info != nil {
		baseURL = strings.TrimRight(info.ChannelBaseUrl, "/")
	}
	return fmt.Sprintf("%s/api/v1/videos", baseURL), nil
}

func (a *TaskAdaptor) BuildRequestHeader(c *gin.Context, req *http.Request, info *relaycommon.RelayInfo) error {
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Accept", "application/json")
	req.Header.Set("Authorization", "Bearer "+a.apiKey)
	return nil
}

func (a *TaskAdaptor) BuildRequestBody(c *gin.Context, info *relaycommon.RelayInfo) (io.Reader, error) {
	req, err := relaycommon.GetTaskRequest(c)
	if err != nil {
		return nil, err
	}

	body, err := a.convertToRequestPayload(&req)
	if err != nil {
		return nil, errors.Wrap(err, "convert request payload failed")
	}
	if info.IsModelMapped {
		body.Model = info.UpstreamModelName
	} else {
		info.UpstreamModelName = body.Model
	}
	data, err := common.Marshal(body)
	if err != nil {
		return nil, err
	}
	return bytes.NewReader(data), nil
}

func (a *TaskAdaptor) DoRequest(c *gin.Context, info *relaycommon.RelayInfo, requestBody io.Reader) (*http.Response, error) {
	return channel.DoTaskApiRequest(a, c, info, requestBody)
}

func (a *TaskAdaptor) DoResponse(c *gin.Context, resp *http.Response, info *relaycommon.RelayInfo) (taskID string, taskData []byte, taskErr *dto.TaskError) {
	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		return "", nil, service.TaskErrorWrapper(err, "read_response_body_failed", http.StatusInternalServerError)
	}
	_ = resp.Body.Close()

	var dResp responsePayload
	if err := common.Unmarshal(responseBody, &dResp); err != nil {
		return "", nil, service.TaskErrorWrapper(errors.Wrapf(err, "body: %s", responseBody), "unmarshal_response_body_failed", http.StatusInternalServerError)
	}
	if strings.TrimSpace(dResp.ID) == "" {
		return "", nil, service.TaskErrorWrapper(fmt.Errorf("task_id is empty"), "invalid_response", http.StatusInternalServerError)
	}

	clientPayload := map[string]any{}
	if err := common.Unmarshal(responseBody, &clientPayload); err != nil {
		return "", nil, service.TaskErrorWrapper(err, "unmarshal_response_body_failed", http.StatusInternalServerError)
	}
	clientPayload = relaytypes.CloneMapAny(clientPayload)
	delete(clientPayload, "aiping_id")
	clientPayload["id"] = info.PublicTaskID
	if _, ok := clientPayload["created_at"]; !ok {
		clientPayload["created_at"] = time.Now().Unix()
	}
	if _, ok := clientPayload["model"]; !ok {
		clientPayload["model"] = info.OriginModelName
	}
	c.JSON(http.StatusOK, clientPayload)
	return dResp.ID, responseBody, nil
}

func (a *TaskAdaptor) FetchTask(baseUrl, key string, body map[string]any, proxy string) (*http.Response, error) {
	req, err := a.buildFetchRequest(baseUrl, key, body)
	if err != nil {
		return nil, err
	}
	client, err := service.GetHttpClientWithProxy(proxy)
	if err != nil {
		return nil, fmt.Errorf("new proxy http client failed: %w", err)
	}
	return client.Do(req)
}

func (a *TaskAdaptor) buildFetchRequest(baseUrl, key string, body map[string]any) (*http.Request, error) {
	taskID, ok := body["task_id"].(string)
	if !ok || strings.TrimSpace(taskID) == "" {
		return nil, fmt.Errorf("invalid task_id")
	}
	uri := fmt.Sprintf("%s/api/v1/videos/%s", strings.TrimRight(baseUrl, "/"), taskID)
	req, err := http.NewRequest(http.MethodGet, uri, nil)
	if err != nil {
		return nil, err
	}
	req.Header.Set("Accept", "application/json")
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", "Bearer "+key)
	return req, nil
}

func (a *TaskAdaptor) GetModelList() []string {
	return ModelList
}

func (a *TaskAdaptor) GetChannelName() string {
	return ChannelName
}

func (a *TaskAdaptor) convertToRequestPayload(req *relaycommon.TaskSubmitReq) (*requestPayload, error) {
	r := requestPayload{
		Model:   req.Model,
		Content: []ContentItem{},
	}
	if req.HasImage() {
		for _, imgURL := range req.Images {
			r.Content = append(r.Content, ContentItem{
				Type:     "image_url",
				ImageURL: &MediaURL{URL: imgURL},
			})
		}
	}
	if err := taskcommon.UnmarshalMetadata(req.Metadata, &r); err != nil {
		return nil, errors.Wrap(err, "unmarshal metadata failed")
	}
	if sec, _ := strconv.Atoi(req.Seconds); sec > 0 {
		r.Duration = lo.ToPtr(dto.IntValue(sec))
	}
	hasTextContent := lo.SomeBy(r.Content, func(c ContentItem) bool {
		return c.Type == "text" && strings.TrimSpace(c.Text) != ""
	})
	if !hasTextContent && strings.TrimSpace(req.Prompt) != "" {
		r.Content = append(r.Content, ContentItem{Type: "text", Text: req.Prompt})
	}
	return &r, nil
}

func (a *TaskAdaptor) ParseTaskResult(respBody []byte) (*relaycommon.TaskInfo, error) {
	resTask := responseTask{}
	if err := common.Unmarshal(respBody, &resTask); err != nil {
		return nil, errors.Wrap(err, "unmarshal task result failed")
	}

	taskResult := relaycommon.TaskInfo{Code: 0}
	switch resTask.Status {
	case "pending", "queued":
		taskResult.Status = model.TaskStatusQueued
		taskResult.Progress = "10%"
	case "processing", "running":
		taskResult.Status = model.TaskStatusInProgress
		taskResult.Progress = "50%"
	case "succeeded":
		taskResult.Status = model.TaskStatusSuccess
		taskResult.Progress = "100%"
		taskResult.Url = resTask.Content.VideoURL
		taskResult.CompletionTokens = resTask.Usage.CompletionTokens
		taskResult.TotalTokens = resTask.Usage.TotalTokens
	case "failed", "expired", "cancelled":
		taskResult.Status = model.TaskStatusFailure
		taskResult.Progress = "100%"
		taskResult.Reason = resTask.Error.Message
		if taskResult.Reason == "" {
			taskResult.Reason = "task " + resTask.Status
		}
	default:
		taskResult.Status = model.TaskStatusInProgress
		taskResult.Progress = "30%"
	}
	return &taskResult, nil
}

func (a *TaskAdaptor) ConvertToOpenAIVideo(originTask *model.Task) ([]byte, error) {
	var dResp responseTask
	if err := common.Unmarshal(originTask.Data, &dResp); err != nil {
		return nil, errors.Wrap(err, "unmarshal aiping doubao task data failed")
	}

	openAIVideo := dto.NewOpenAIVideo()
	openAIVideo.ID = originTask.TaskID
	openAIVideo.TaskID = originTask.TaskID
	openAIVideo.Status = originTask.Status.ToVideoStatus()
	openAIVideo.SetProgressStr(originTask.Progress)
	openAIVideo.SetMetadata("url", dResp.Content.VideoURL)
	openAIVideo.CreatedAt = originTask.CreatedAt
	openAIVideo.CompletedAt = originTask.UpdatedAt
	openAIVideo.Model = originTask.Properties.OriginModelName

	if dResp.Status == "failed" {
		message := dResp.Error.Message
		if message == "" {
			message = "task failed"
		}
		code := dResp.Error.Code
		if code == "" {
			code = "failed"
		}
		openAIVideo.Error = &dto.OpenAIVideoError{Message: message, Code: code}
	}
	return common.Marshal(openAIVideo)
}