package repository

import (
	"fmt"
	"github.com/go-pg/pg/v10"

	"github.com/linmadan/egglib-go/persistent/pg/sqlbuilder"
	pgTransaction "github.com/linmadan/egglib-go/transaction/pg"
	"github.com/linmadan/egglib-go/utils/snowflake"
	"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/domain"
	"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/infrastructure/pg/models"
	"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/infrastructure/pg/transform"
)

type MappingRuleRepository struct {
	transactionContext *pgTransaction.TransactionContext
}

func (repository *MappingRuleRepository) nextIdentify() (int64, error) {
	IdWorker, err := snowflake.NewIdWorker(1)
	if err != nil {
		return 0, err
	}
	id, err := IdWorker.NextId()
	return id, err
}
func (repository *MappingRuleRepository) Save(mappingRule *domain.MappingRule) (*domain.MappingRule, error) {
	sqlBuildFields := []string{
		"mapping_rule_id",
		"name",
		"table_id",
		"file_id",
		"main_table_fields",
		"verified_file_fields",
		"mapping_fields",
		"created_at",
		"updated_at",
		"deleted_at",
		"context",
	}
	insertFieldsSnippet := sqlbuilder.SqlFieldsSnippet(sqlbuilder.RemoveSqlFields(sqlBuildFields, "mapping_rule_id", "deleted_at"))
	insertPlaceHoldersSnippet := sqlbuilder.SqlPlaceHoldersSnippet(sqlbuilder.RemoveSqlFields(sqlBuildFields, "mapping_rule_id", "deleted_at"))
	returningFieldsSnippet := sqlbuilder.SqlFieldsSnippet(sqlBuildFields)
	updateFields := sqlbuilder.RemoveSqlFields(sqlBuildFields, "mapping_rule_id", "deleted_at")
	updateFieldsSnippet := sqlbuilder.SqlUpdateFieldsSnippet(updateFields)
	tx := repository.transactionContext.PgTx
	if mappingRule.Identify() == nil {
		if _, err := tx.QueryOne(
			pg.Scan(
				&mappingRule.MappingRuleId,
				&mappingRule.Name,
				&mappingRule.TableId,
				&mappingRule.FileId,
				&mappingRule.MainTableFields,
				&mappingRule.VerifiedFileFields,
				&mappingRule.MappingFields,
				&mappingRule.CreatedAt,
				&mappingRule.UpdatedAt,
				&mappingRule.DeletedAt,
				&mappingRule.Context,
			),
			fmt.Sprintf("INSERT INTO metadata.mapping_rules (%s) VALUES (%s) RETURNING %s", insertFieldsSnippet, insertPlaceHoldersSnippet, returningFieldsSnippet),
			//mappingRule.MappingRuleId,
			mappingRule.Name,
			mappingRule.TableId,
			mappingRule.FileId,
			mappingRule.MainTableFields,
			mappingRule.VerifiedFileFields,
			mappingRule.MappingFields,
			mappingRule.CreatedAt,
			mappingRule.UpdatedAt,
			mappingRule.Context,
			//mappingRule.DeletedAt,
		); err != nil {
			return mappingRule, err
		}
	} else {
		if _, err := tx.QueryOne(
			pg.Scan(
				&mappingRule.MappingRuleId,
				&mappingRule.Name,
				&mappingRule.TableId,
				&mappingRule.FileId,
				&mappingRule.MainTableFields,
				&mappingRule.VerifiedFileFields,
				&mappingRule.MappingFields,
				&mappingRule.CreatedAt,
				&mappingRule.UpdatedAt,
				&mappingRule.DeletedAt,
				&mappingRule.Context,
			),
			fmt.Sprintf("UPDATE metadata.mapping_rules SET %s WHERE mapping_rule_id=? RETURNING %s", updateFieldsSnippet, returningFieldsSnippet),
			//mappingRule.MappingRuleId,
			mappingRule.Name,
			mappingRule.TableId,
			mappingRule.FileId,
			mappingRule.MainTableFields,
			mappingRule.VerifiedFileFields,
			mappingRule.MappingFields,
			mappingRule.CreatedAt,
			mappingRule.UpdatedAt,
			mappingRule.Context,
			//mappingRule.DeletedAt,
			mappingRule.Identify(),
		); err != nil {
			return mappingRule, err
		}
	}
	return mappingRule, nil
}
func (repository *MappingRuleRepository) Remove(mappingRule *domain.MappingRule) (*domain.MappingRule, error) {
	tx := repository.transactionContext.PgTx
	mappingRuleModel := new(models.MappingRule)
	mappingRuleModel.MappingRuleId = mappingRule.Identify().(int)
	if _, err := tx.Model(mappingRuleModel).WherePK().Delete(); err != nil {
		return mappingRule, err
	}
	return mappingRule, nil
}
func (repository *MappingRuleRepository) FindOne(queryOptions map[string]interface{}) (*domain.MappingRule, error) {
	tx := repository.transactionContext.PgTx
	mappingRuleModel := new(models.MappingRule)
	query := sqlbuilder.BuildQuery(tx.Model(mappingRuleModel), queryOptions)
	WhereContext(query, queryOptions)
	query.SetWhereByQueryOption("name = ?", "name")
	query.SetWhereByQueryOption("mapping_rule.mapping_rule_id = ?", "mappingRuleId")
	if err := query.First(); err != nil {
		if err.Error() == "pg: no rows in result set" {
			return nil, fmt.Errorf("没有此资源")
		} else {
			return nil, err
		}
	}
	if mappingRuleModel.MappingRuleId == 0 {
		return nil, nil
	} else {
		return transform.TransformToMappingRuleDomainModelFromPgModels(mappingRuleModel)
	}
}
func (repository *MappingRuleRepository) Find(queryOptions map[string]interface{}) (int64, []*domain.MappingRule, error) {
	tx := repository.transactionContext.PgTx
	var mappingRuleModels []*models.MappingRule
	mappingRules := make([]*domain.MappingRule, 0)
	query := sqlbuilder.BuildQuery(tx.Model(&mappingRuleModels), queryOptions)
	WhereContext(query, queryOptions)
	//query.SetOffsetAndLimit(20)
	query.SetWhereByQueryOption("table_id = ?", "tableId")
	query.SetOrderDirect("mapping_rule_id", "DESC")
	if count, err := query.SelectAndCount(); err != nil {
		return 0, mappingRules, err
	} else {
		for _, mappingRuleModel := range mappingRuleModels {
			if mappingRule, err := transform.TransformToMappingRuleDomainModelFromPgModels(mappingRuleModel); err != nil {
				return 0, mappingRules, err
			} else {
				mappingRules = append(mappingRules, mappingRule)
			}
		}
		return int64(count), mappingRules, nil
	}
}
func NewMappingRuleRepository(transactionContext *pgTransaction.TransactionContext) (*MappingRuleRepository, error) {
	if transactionContext == nil {
		return nil, fmt.Errorf("transactionContext参数不能为nil")
	} else {
		return &MappingRuleRepository{
			transactionContext: transactionContext,
		}, nil
	}
}