// Package model define model struct of model runtime service
package model

import (
	"context"
	"errors"
	"fmt"

	"modelRT/constants"
	"modelRT/diagram"
	"modelRT/logger"
	"modelRT/orm"

	"github.com/RediSearch/redisearch-go/v2/redisearch"
	"gorm.io/gorm"
)

type columnParam struct {
	AttributeType  string
	AttributeGroup map[string]any
}

// TraverseAttributeGroupTables define func to traverse component attribute group tables
func TraverseAttributeGroupTables(ctx context.Context, db *gorm.DB, compTagToFullPath map[string]string, compAttrSet map[string]orm.AttributeSet) error {
	var tableNames []string

	excludedTables := []string{"component", ""}
	result := db.Model(&orm.ProjectManager{}).
		Where("name NOT IN ?", excludedTables).
		Pluck("name", &tableNames)
	if result.Error != nil && result.Error != gorm.ErrRecordNotFound {
		logger.Error(ctx, "query name column data from postgres table failed", "err", result.Error)
		return result.Error
	}

	if len(tableNames) == 0 {
		logger.Info(ctx, "query from postgres successed, but no records found")
		return nil
	}

	for _, tableName := range tableNames {
		var records []map[string]any
		err := db.Table(tableName).Find(&records).Error
		if err != nil && err != gorm.ErrRecordNotFound {
			logger.Error(ctx, fmt.Sprintf("query table '%s' data failed", tableName), "table_name", tableName, "err", err)
			return err
		}

		migrator := db.Migrator()

		if exists := migrator.HasTable(tableName); !exists {
			err := errors.New("can not find special table into database")
			logger.Error(ctx, "table does not exist in the database", "table _name", tableName, "error", err)
			return err
		}

		columnTypes, err := migrator.ColumnTypes(tableName)
		if err != nil {
			logger.Error(ctx, "retrieving column structure for table failed", "table _name", tableName, "error", err)
			return err
		}

		for _, record := range records {
			attributeGroup := make(map[string]any)
			var componentUUIDStr string
			var attrSet orm.AttributeSet
			var attributeType string
			for _, col := range columnTypes {
				colName := col.Name()

				value, exists := record[colName]
				if !exists {
					err := errors.New("can not find value from record by column name")
					logger.Error(ctx, "query value by column name failed", "column_name", colName, "error", err)
					return err
				}
				switch colName {
				case "id":
				case "global_uuid":
					componentUUIDStr = value.(string)
					attrSet, exists = compAttrSet[componentUUIDStr]
					if !exists {
						err := errors.New("can not find component tag from record by global uuid")
						logger.Error(ctx, "check component info by global uuid failed", "global_uuid", componentUUIDStr, "error", err)
						return err
					}
				case "attribute_group":
					attributeType = value.(string)
				default:
					attributeGroup[colName] = value
				}
			}

			fullPath := compTagToFullPath[attrSet.CompTag]
			if fullPath == "" {
				err := errors.New("can not find full parent path from mapping by component tag")
				logger.Error(ctx, "find full parent path by from mapping by component tag failed", "component_tag", attrSet.CompTag, "error", err)
				return err
			}
			columnParam := columnParam{
				AttributeType:  attributeType,
				AttributeGroup: attributeGroup,
			}
			go storeAttributeGroup(ctx, attrSet, fullPath, columnParam)
		}
	}
	return nil
}

func storeAttributeGroup(ctx context.Context, attributeSet orm.AttributeSet, fullPath string, colParams columnParam) {
	rdb := diagram.GetRedisClientInstance()
	pipe := rdb.Pipeline()

	// add token6 hierarchy content
	pipe.SAdd(ctx, constants.RedisAllConfigSetKey, colParams.AttributeType)

	// add token5-token7 hierarchy collaboration content
	specCompMeasKey := fmt.Sprintf(constants.RedisSpecCompTagMeasSetKey, attributeSet.CompTag)
	attrNameMembers := make([]string, 0, len(colParams.AttributeGroup))
	attrbutesGroups := make([]any, 0, len(colParams.AttributeGroup)*2)
	attributeGroupKey := fmt.Sprintf("%s_%s", attributeSet.CompTag, colParams.AttributeType)

	sug := make([]redisearch.Suggestion, 0, len(colParams.AttributeGroup))
	for attrName, attrValue := range colParams.AttributeGroup {
		attrbutesGroups = append(attrbutesGroups, attrName, attrValue)
		attrNameMembers = append(attrNameMembers, attrName)

		configTerm := fmt.Sprintf("%s.%s", fullPath, colParams.AttributeType)
		sug = append(sug, redisearch.Suggestion{
			Term:  configTerm,
			Score: constants.DefaultScore,
		})

		measTerm := fmt.Sprintf("%s.%s.%s", fullPath, colParams.AttributeType, attrName)
		sug = append(sug, redisearch.Suggestion{
			Term:  measTerm,
			Score: constants.DefaultScore,
		})
	}

	if len(attrbutesGroups) > 0 {
		pipe.HSet(ctx, attributeGroupKey, attrbutesGroups...)
	}

	if len(attrNameMembers) > 0 {
		pipe.SAdd(ctx, constants.RedisAllMeasTagSetKey, attrNameMembers)
		pipe.SAdd(ctx, specCompMeasKey, attrNameMembers)
	}

	if len(sug) > 0 {
		ac.AddTerms(sug...)
	}

	_, err := pipe.Exec(ctx)
	if err != nil {
		logger.Error(ctx, "init component attribute group recommend content failed", "error", err)
	}
}