package value_object_crud

import (
	"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/api/request"
	"git.sxidc.com/go-framework/baize/framework/core/api/response"
	"git.sxidc.com/go-framework/baize/framework/core/domain"
	"git.sxidc.com/go-framework/baize/framework/core/domain/value_object"
	"git.sxidc.com/go-framework/baize/framework/core/infrastructure"
	"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/tag/sql/sql_mapping"
	"github.com/pkg/errors"
	"reflect"
)

func Create(tableName string, callbacks *CreateCallbacks, needTx bool) binding.ServiceFunc[any] {
	return func(c *api.Context, params request.Params, objects []domain.Object, i *infrastructure.Infrastructure) (any, error) {
		object := objects[0]
		if object == nil {
			return nil, errors.New("领域实体为空")
		}

		dbExecutor := i.DBExecutor()

		valueObject, ok := objects[0].(value_object.ValueObject)
		if !ok {
			return nil, errors.New("需要传递领域对象应该为值对象")
		}

		prepared, err := callbackPrepareCreate(callbacks, c, params, valueObject, i)
		if err != nil {
			return nil, callbackOnCreateErrorReturn(callbacks, c, params, valueObject, make(map[string]any), err, i)
		}

		err = domain.CheckFieldsForCreate(valueObject, valueObject.GetFieldMap())
		if err != nil {
			return nil, callbackOnCreateErrorReturn(callbacks, c, params, valueObject, make(map[string]any), err, i)
		}

		if needTx {
			err = database.Transaction(dbExecutor, func(tx database.Executor) error {
				err := callbackBeforeCreate(callbacks, c, params, valueObject, prepared, i, tx)
				if err != nil {
					return err
				}

				err = database.InsertEntity(tx, tableName, valueObject)
				if err != nil {
					if database.IsErrorDBRecordHasExist(err) {
						err = errors.New(valueObject.DomainCNName() + "已存在")
					}

					return err
				}

				err = callbackAfterCreate(callbacks, c, params, valueObject, prepared, i, tx)
				if err != nil {
					return err
				}

				return nil
			})
			if err != nil {
				return nil, callbackOnCreateErrorReturn(callbacks, c, params, valueObject, prepared, err, i)
			}
		} else {
			err = callbackBeforeCreate(callbacks, c, params, valueObject, prepared, i, nil)
			if err != nil {
				return nil, callbackOnCreateErrorReturn(callbacks, c, params, valueObject, prepared, err, i)
			}

			err = database.InsertEntity(dbExecutor, tableName, valueObject)
			if err != nil {
				if database.IsErrorDBRecordHasExist(err) {
					err = errors.New(valueObject.DomainCNName() + "已存在")
				}

				return nil, callbackOnCreateErrorReturn(callbacks, c, params, valueObject, prepared, err, i)
			}

			err = callbackAfterCreate(callbacks, c, params, valueObject, prepared, i, nil)
			if err != nil {
				return nil, callbackOnCreateErrorReturn(callbacks, c, params, valueObject, prepared, err, i)
			}
		}

		return nil, callbackOnCreateSuccessReturn(callbacks, c, params, valueObject, prepared, i)
	}
}

func Delete(tableName string, callbacks *DeleteCallbacks, needTx bool) binding.ServiceFunc[any] {
	return func(c *api.Context, params request.Params, objects []domain.Object, i *infrastructure.Infrastructure) (any, error) {
		object := objects[0]
		if object == nil {
			return nil, errors.New("领域实体为空")
		}

		dbExecutor := i.DBExecutor()

		valueObject, ok := objects[0].(value_object.ValueObject)
		if !ok {
			return nil, errors.New("需要传递领域对象应该为值对象")
		}

		prepared, err := callbackPrepareDelete(callbacks, c, params, valueObject, i)
		if err != nil {
			return nil, callbackOnDeleteErrorReturn(callbacks, c, params, valueObject, make(map[string]any), err, i)
		}

		err = domain.CheckFieldsForDelete(valueObject, valueObject.GetFieldMap())
		if err != nil {
			return nil, callbackOnDeleteErrorReturn(callbacks, c, params, valueObject, make(map[string]any), err, i)
		}

		if needTx {
			err = database.Transaction(dbExecutor, func(tx database.Executor) error {
				err = callbackBeforeDelete(callbacks, c, params, valueObject, prepared, i, tx)
				if err != nil {
					return err
				}

				err = database.DeleteEntity(tx, tableName, valueObject)
				if err != nil {
					return err
				}

				err = callbackAfterDelete(callbacks, c, params, valueObject, prepared, i, tx)
				if err != nil {
					return err
				}

				return nil
			})
			if err != nil {
				return nil, callbackOnDeleteErrorReturn(callbacks, c, params, valueObject, prepared, err, i)
			}
		} else {
			err = callbackBeforeDelete(callbacks, c, params, valueObject, prepared, i, nil)
			if err != nil {
				return nil, callbackOnDeleteErrorReturn(callbacks, c, params, valueObject, make(map[string]any), err, i)
			}

			err = database.DeleteEntity(dbExecutor, tableName, valueObject)
			if err != nil {
				return nil, callbackOnDeleteErrorReturn(callbacks, c, params, valueObject, make(map[string]any), err, i)
			}

			err = callbackAfterDelete(callbacks, c, params, valueObject, prepared, i, nil)
			if err != nil {
				return nil, callbackOnDeleteErrorReturn(callbacks, c, params, valueObject, make(map[string]any), err, i)
			}
		}

		return nil, callbackOnDeleteSuccessReturn(callbacks, c, params, valueObject, prepared, i)
	}
}

type ConditionFieldCallback func(conditions *sql.Conditions, fieldName string, columnName string, value any) (hasDeal bool, err error)

type CustomCondition struct {
	Conditions *sql.Conditions
	OrderBy    string
}

type FormCustomConditionFunc func(c *api.Context, params request.Params, valueObject value_object.ValueObject) (*CustomCondition, error)

func Query[O any](tableName string, orderBy string, callbacks *QueryCallbacks[O], conditionFieldCallback ConditionFieldCallback, formCustomConditionFunc FormCustomConditionFunc) binding.ServiceFunc[response.InfosData[O]] {
	return func(c *api.Context, params request.Params, objects []domain.Object, i *infrastructure.Infrastructure) (response.InfosData[O], error) {
		errResponse := response.InfosData[O]{
			Infos: make([]O, 0),
		}

		if params == nil {
			return errResponse, errors.New("请求参数为空")
		}

		object := objects[0]
		if object == nil {
			return errResponse, errors.New("领域实体为空")
		}

		dbExecutor := i.DBExecutor()

		queryParams, ok := params.(request.QueryRequestParams)
		if !ok {
			return errResponse, errors.New("请求参数不是Query接口")
		}

		valueObject, ok := objects[0].(value_object.ValueObject)
		if !ok {
			return errResponse, errors.New("需要传递领域对象应该为值对象")
		}

		conditions := sql.NewConditions()

		fields, err := sql_mapping.DefaultUsage(valueObject)
		if err != nil {
			return errResponse, err
		}

		if formCustomConditionFunc == nil {
			for _, field := range fields {
				hasDeal := false
				if conditionFieldCallback != nil {
					hasDeal, err = conditionFieldCallback(conditions, field.FieldName, field.ColumnName, field.Value)
					if err != nil {
						return errResponse, err
					}
				}

				if !hasDeal {
					fieldValue := reflect.ValueOf(field.Value)
					if !fieldValue.IsZero() {
						conditions.Equal(field.ColumnName, field.Value)
					}
				}
			}
		} else {
			customCondition, err := formCustomConditionFunc(c, queryParams, valueObject)
			if err != nil {
				return errResponse, err
			}

			conditions = customCondition.Conditions
			orderBy = customCondition.OrderBy
		}

		err = callbackBeforeQuery(callbacks, c, params, valueObject, i)
		if err != nil {
			return callbackOnQueryErrorReturn(callbacks, c, params, valueObject, err, i)
		}

		results, totalCount, err := database.Query(dbExecutor, &sql.QueryExecuteParams{
			TableName:  tableName,
			Conditions: conditions,
			OrderBy:    orderBy,
			PageNo:     queryParams.GetPageNo(),
			PageSize:   queryParams.GetPageSize(),
		})
		if err != nil {
			return callbackOnQueryErrorReturn(callbacks, c, params, valueObject, err, i)
		}

		err = callbackAfterQuery(callbacks, c, params, valueObject, i)
		if err != nil {
			return callbackOnQueryErrorReturn(callbacks, c, params, valueObject, err, i)
		}

		infos := make([]O, 0)
		err = sql.ParseSqlResult(results, &infos)
		if err != nil {
			return callbackOnQueryErrorReturn(callbacks, c, params, valueObject, err, i)
		}

		output := response.InfosData[O]{
			Infos:      infos,
			TotalCount: totalCount,
			PageNo:     queryParams.GetPageNo(),
		}

		return callbackOnQuerySuccessReturn(callbacks, c, params, valueObject, i, output)
	}
}