package task_manager

import (
	"encoding/json"
	"git.sxidc.com/go-framework/baize/convenient/domain/task_manager/task"
	"git.sxidc.com/go-framework/baize/framework/binding"
	"git.sxidc.com/go-framework/baize/framework/core/api"
	"git.sxidc.com/go-framework/baize/framework/core/application"
	"git.sxidc.com/go-framework/baize/framework/core/domain"
	"git.sxidc.com/go-framework/baize/framework/core/infrastructure/database"
	"git.sxidc.com/go-framework/baize/framework/core/infrastructure/database/sql"
	"git.sxidc.com/go-framework/baize/framework/core/infrastructure/logger"
	"git.sxidc.com/go-tools/utils/strutils"
	"github.com/pkg/errors"
)

type RunTaskParams struct {
	Group      string
	OperatorID string
	Context    map[string]any
	DBSchema   string
	DBExecutor database.Executor
}

func (params *RunTaskParams) check() error {
	if strutils.IsStringEmpty(params.Group) {
		return errors.New("没有传递任务组")
	}

	if strutils.IsStringEmpty(params.OperatorID) {
		return errors.New("没有传递操作人ID")
	}

	if strutils.IsStringEmpty(params.DBSchema) {
		return errors.New("没有传递数据库schema")
	}

	if params.DBExecutor == nil {
		return errors.New("没有传递数据库执行器")
	}

	return nil
}

func RunTask(runner task.Runner, params *RunTaskParams) error {
	ctxJsonBytes, err := json.Marshal(params.Context)
	if err != nil {
		return err
	}

	ctxJsonStr := string(ctxJsonBytes)

	// 创建任务，任务状态为已创建
	taskEntity := &task.Entity{
		Group:        params.Group,
		Context:      ctxJsonStr,
		CreateUserID: params.OperatorID,
	}

	err = createTaskDB(taskEntity, params.DBSchema, params.DBExecutor)
	if err != nil {
		return err
	}

	go runTask(taskEntity, runner, params.DBSchema, params.DBExecutor, func(ctx map[string]any, runner task.Runner) error {
		return runner.Run(ctx)
	})

	return nil
}

type RestartTaskParams struct {
	Group      string
	DBSchema   string
	DBExecutor database.Executor
}

func (params *RestartTaskParams) check() error {
	if strutils.IsStringEmpty(params.Group) {
		return errors.New("没有传递任务组")
	}

	if strutils.IsStringEmpty(params.DBSchema) {
		return errors.New("没有传递数据库schema")
	}

	if params.DBExecutor == nil {
		return errors.New("没有传递数据库执行器")
	}

	return nil
}

func RestartTask(runner task.Runner, params *RestartTaskParams) error {
	runningResults, _, err := database.Query(params.DBExecutor, &sql.QueryExecuteParams{
		TableName: domain.TableName(params.DBSchema, &task.Entity{}),
		Conditions: sql.NewConditions().Equal(task.ColumnGroup, params.Group).
			Equal(task.ColumnStatus, task.StatusCodeRunning),
		PageNo:   0,
		PageSize: 0,
	})
	if err != nil {
		return err
	}

	taskEntities := make([]task.Entity, 0)
	err = sql.ParseSqlResult(runningResults, &taskEntities)
	if err != nil {
		return err
	}

	for _, taskEntity := range taskEntities {
		go runTask(&taskEntity, runner, params.DBSchema, params.DBExecutor, func(ctx map[string]any, runner task.Runner) error {
			return runner.Restart(ctx)
		})
	}

	return nil
}

func createTaskDB(taskEntity *task.Entity, dbSchema string, dbExecutor database.Executor) error {
	taskEntity.SetStatusCreated()

	err := domain.CheckWhen(taskEntity, taskEntity.GetFieldMap(), "run")
	if err != nil {
		return err
	}

	err = database.InsertEntity(dbExecutor, domain.TableName(dbSchema, taskEntity), taskEntity)
	if err != nil {
		return err
	}

	return nil
}

func updateTaskStatusRunningDB(taskEntity *task.Entity, dbSchema string, dbExecutor database.Executor) error {
	taskEntity.SetStatusRunning()

	err := database.UpdateEntity(dbExecutor, domain.TableName(dbSchema, taskEntity), taskEntity)
	if err != nil {
		return err
	}

	return nil
}

func updateTaskStatusCompleteDB(taskEntity *task.Entity, dbSchema string, dbExecutor database.Executor) error {
	taskEntity.SetStatusCompleted()

	err := database.UpdateEntity(dbExecutor, domain.TableName(dbSchema, taskEntity), taskEntity)
	if err != nil {
		return err
	}

	return nil
}

func updateTaskStatusErrorDB(taskEntity *task.Entity, errMsg string, dbSchema string, dbExecutor database.Executor) error {
	taskEntity.SetStatusError(errMsg)

	err := database.UpdateEntity(dbExecutor, domain.TableName(dbSchema, taskEntity), taskEntity)
	if err != nil {
		return err
	}

	return nil
}

func runTask(taskEntity *task.Entity, runner task.Runner, dbSchema string, dbExecutor database.Executor, executeFunc func(ctx map[string]any, runner task.Runner) error) {
	ctx := make(map[string]any)
	err := json.Unmarshal([]byte(taskEntity.Context), &ctx)
	if err != nil {
		err = updateTaskStatusErrorDB(taskEntity, err.Error(), dbSchema, dbExecutor)
		if err != nil {
			logger.GetInstance().Error("解析任务上下文失败 ", err)
			return
		}

		return
	}

	err = updateTaskStatusRunningDB(taskEntity, dbSchema, dbExecutor)
	if err != nil {
		logger.GetInstance().Error("更新任务运行状态失败 ", err)
		return
	}

	// 执行任务
	err = executeFunc(ctx, runner)
	if err != nil {
		err = updateTaskStatusErrorDB(taskEntity, err.Error(), dbSchema, dbExecutor)
		if err != nil {
			logger.GetInstance().Error("更新任务错误状态失败 ", err)
			return
		}

		return
	}

	err = updateTaskStatusCompleteDB(taskEntity, dbSchema, dbExecutor)
	if err != nil {
		logger.GetInstance().Error("更新任务完成状态失败 ", err)
		return
	}
}

// Simple Bind参数
type Simple struct {
	// schema
	Schema string
}

func (simple *Simple) bind(binder *binding.Binder) {
	// TODO 完成查询接口
}

func Bind(app *application.App, simple *Simple) {
	binder := binding.NewBinder(app.Api().ChooseRouter(api.RouterPrefix, ""), app.Infrastructure())
	simple.bind(binder)
}