package controllers

import (
	errors2 "errors"

	"github.com/crawlab-team/crawlab/core/interfaces"
	"github.com/crawlab-team/crawlab/core/models/models"
	"github.com/crawlab-team/crawlab/core/models/service"
	"github.com/crawlab-team/crawlab/core/schedule"
	"github.com/crawlab-team/crawlab/core/spider/admin"
	"github.com/gin-gonic/gin"
	"github.com/juju/errors"
	"go.mongodb.org/mongo-driver/bson/primitive"
)

type PostScheduleParams struct {
	Data models.Schedule `json:"data"`
}

func PostSchedule(c *gin.Context, params *PostScheduleParams) (response *Response[models.Schedule], err error) {
	s := params.Data
	u := GetUserFromContext(c)

	modelSvc := service.NewModelService[models.Schedule]()

	s.SetCreated(u.Id)
	s.SetUpdated(u.Id)
	id, err := modelSvc.InsertOne(s)
	if err != nil {
		return GetErrorResponse[models.Schedule](err)
	}
	s.Id = id

	if s.Enabled {
		scheduleSvc := schedule.GetScheduleService()
		if err := scheduleSvc.Enable(s, u.Id); err != nil {
			return GetErrorResponse[models.Schedule](err)
		}
	}

	return GetDataResponse(s)
}

type PutScheduleByIdParams struct {
	Id   string          `path:"id"`
	Data models.Schedule `json:"data"`
}

func PutScheduleById(c *gin.Context, params *PutScheduleByIdParams) (response *Response[models.Schedule], err error) {
	id, err := primitive.ObjectIDFromHex(params.Id)
	if err != nil {
		return GetErrorResponse[models.Schedule](errors.BadRequestf("invalid schedule id: %v", err))
	}

	s := params.Data
	if s.Id != id {
		return GetErrorResponse[models.Schedule](errors2.New("id in path does not match id in body"))
	}

	modelSvc := service.NewModelService[models.Schedule]()
	err = modelSvc.ReplaceById(id, s)
	if err != nil {
		return GetErrorResponse[models.Schedule](err)
	}

	scheduleSvc := schedule.GetScheduleService()
	u := GetUserFromContext(c)

	if s.Enabled {
		if err := scheduleSvc.Enable(s, u.Id); err != nil {
			return GetErrorResponse[models.Schedule](err)
		}
	} else {
		if err := scheduleSvc.Disable(s, u.Id); err != nil {
			return GetErrorResponse[models.Schedule](err)
		}
	}

	return GetDataResponse(s)
}

type PostScheduleEnableDisableParams struct {
	Id string `path:"id"`
}

func PostScheduleEnable(c *gin.Context, params *PostScheduleEnableDisableParams) (response *VoidResponse, err error) {
	userId := GetUserFromContext(c).Id
	return postScheduleEnableDisableFunc(true, userId, params)
}

func PostScheduleDisable(c *gin.Context, params *PostScheduleEnableDisableParams) (response *VoidResponse, err error) {
	userId := GetUserFromContext(c).Id
	return postScheduleEnableDisableFunc(false, userId, params)
}

func postScheduleEnableDisableFunc(isEnable bool, userId primitive.ObjectID, params *PostScheduleEnableDisableParams) (response *VoidResponse, err error) {
	id, err := primitive.ObjectIDFromHex(params.Id)
	if err != nil {
		return GetErrorVoidResponse(errors.BadRequestf("invalid schedule id: %v", err))
	}

	svc := schedule.GetScheduleService()
	s, err := service.NewModelService[models.Schedule]().GetById(id)
	if err != nil {
		return GetErrorVoidResponse(err)
	}

	if isEnable {
		err = svc.Enable(*s, userId)
	} else {
		err = svc.Disable(*s, userId)
	}
	if err != nil {
		return GetErrorVoidResponse(err)
	}

	return GetVoidResponse()
}

type PostScheduleRunParams struct {
	Id       string   `path:"id"`
	Mode     string   `json:"mode"`
	NodeIds  []string `json:"node_ids"`
	Cmd      string   `json:"cmd"`
	Param    string   `json:"param"`
	Priority int      `json:"priority"`
}

func PostScheduleRun(c *gin.Context, params *PostScheduleRunParams) (response *Response[[]primitive.ObjectID], err error) {
	userId := GetUserFromContext(c).Id
	return postScheduleRunFunc(params, userId)
}

func postScheduleRunFunc(params *PostScheduleRunParams, userId primitive.ObjectID) (response *Response[[]primitive.ObjectID], err error) {
	id, err := primitive.ObjectIDFromHex(params.Id)
	if err != nil {
		return GetErrorResponse[[]primitive.ObjectID](errors.BadRequestf("invalid schedule id: %v", err))
	}

	var nodeIds []primitive.ObjectID
	for _, nodeId := range params.NodeIds {
		nodeId, err := primitive.ObjectIDFromHex(nodeId)
		if err != nil {
			return GetErrorResponse[[]primitive.ObjectID](errors.BadRequestf("invalid node id: %v", err))
		}
		nodeIds = append(nodeIds, nodeId)
	}

	opts := interfaces.SpiderRunOptions{
		Mode:       params.Mode,
		NodeIds:    nodeIds,
		Cmd:        params.Cmd,
		Param:      params.Param,
		Priority:   params.Priority,
		ScheduleId: id,
		UserId:     userId,
	}

	// schedule
	sch, err := service.NewModelService[models.Schedule]().GetById(id)
	if err != nil {
		return GetErrorResponse[[]primitive.ObjectID](err)
	}

	// spider
	s, err := service.NewModelService[models.Spider]().GetById(sch.SpiderId)
	if err != nil {
		return GetErrorResponse[[]primitive.ObjectID](err)
	}

	// user
	opts.UserId = userId

	// schedule tasks
	taskIds, err := admin.GetSpiderAdminService().Schedule(s.Id, &opts)
	if err != nil {
		return GetErrorResponse[[]primitive.ObjectID](err)
	}

	return GetDataResponse(taskIds)
}