cmds

var DbCmd = &cobra.Command{
	Use:   "db",
	Short: "Manage databases",
}

var MysqlCmd = &cobra.Command{
	Use:   "mysql",
	Short: "MySQL commands",
}

var QueryCmd = &cobra.Command{
	Use:   "query <query>",
	Short: "Run a SQL query passed as a CLI argument",
	Args:  cobra.ExactArgs(1),
	Run: func(cmd *cobra.Command, args []string) {
		query := args[0]

		db, err := pkg.OpenDatabaseFromViper()
		cobra.CheckErr(err)

		dbContext := context.Background()
		err = db.PingContext(dbContext)
		cobra.CheckErr(err)

		gp, of, err := cli.SetupProcessor(cmd)
		cobra.CheckErr(err)

		err = pkg.RunNamedQueryIntoGlaze(dbContext, db, query, map[string]interface{}{}, gp)
		cobra.CheckErr(err)

		s, err := of.Output()
		cobra.CheckErr(err)

		fmt.Print(s)
	},
}

var RunCmd = &cobra.Command{
	Use:   "run",
	Short: "Run a SQL query from sql files",
	Args:  cobra.ExactArgs(1),
	Run: func(cmd *cobra.Command, args []string) {
		db, err := pkg.OpenDatabaseFromViper()
		cobra.CheckErr(err)

		dbContext := context.Background()
		err = db.PingContext(dbContext)
		cobra.CheckErr(err)

		for _, arg := range args {
			gp, of, err := cli.SetupProcessor(cmd)
			cobra.CheckErr(err)
			query := ""

			if arg == "-" {
				inBytes, err := io.ReadAll(os.Stdin)
				cobra.CheckErr(err)
				query = string(inBytes)
			} else {

				queryBytes, err := os.ReadFile(arg)
				cobra.CheckErr(err)

				query = string(queryBytes)
			}

			err = pkg.RunNamedQueryIntoGlaze(dbContext, db, string(query), map[string]interface{}{}, gp)
			cobra.CheckErr(err)

			s, err := of.Output()
			cobra.CheckErr(err)

			fmt.Print(s)
		}
	},
}

var SelectCmd = &cobra.Command{
	Use: "select <table>",

	Short: "Select" + " all columns from a table",
	Args:  cobra.ExactArgs(1),
	Run: func(cmd *cobra.Command, args []string) {
		table := args[0]

		columns, err := cmd.Flags().GetStringSlice("columns")
		cobra.CheckErr(err)
		limit, err := cmd.Flags().GetInt("limit")
		cobra.CheckErr(err)
		offset, err := cmd.Flags().GetInt("offset")
		cobra.CheckErr(err)
		count, err := cmd.Flags().GetBool("count")
		cobra.CheckErr(err)
		where, err := cmd.Flags().GetString("where")
		cobra.CheckErr(err)
		order, err := cmd.Flags().GetString("order-by")
		cobra.CheckErr(err)
		distinct, err := cmd.Flags().GetBool("distinct")
		cobra.CheckErr(err)

		sb := sqlbuilder.NewSelectBuilder()
		sb = sb.From(table)

		if count {
			countColumns := strings.Join(columns, ", ")
			if distinct {
				countColumns = "DISTINCT " + countColumns
			}
			columns = []string{sb.As(fmt.Sprintf("COUNT(%s)", countColumns), "count")}
		} else {
			if len(columns) == 0 {
				columns = []string{"*"}
			}
		}
		sb = sb.Select(columns...)
		if distinct && !count {
			sb = sb.Distinct()
		}

		if where != "" {
			sb = sb.Where(where)
		}

		if limit > 0 && !count {
			sb = sb.Limit(limit)
		}
		if offset > 0 {
			sb = sb.Offset(offset)
		}
		if order != "" {
			sb = sb.OrderBy(order)
		}

		createQuery, err := cmd.Flags().GetString("create-query")
		cobra.CheckErr(err)
		if createQuery != "" {
			short := fmt.Sprintf("Select"+" columns from %s", table)
			if count {
				short = fmt.Sprintf("Count all rows from %s", table)
			}
			if where != "" {
				short = fmt.Sprintf("Select"+" from %s where %s", table, where)
			}

			flags := []*cmds.Parameter{}
			if where == "" {
				flags = append(flags, &cmds.Parameter{
					Name: "where",
					Type: cmds.ParameterTypeString,
				})
			}
			if !count {
				flags = append(flags, &cmds.Parameter{
					Name:    "limit",
					Type:    cmds.ParameterTypeInteger,
					Help:    fmt.Sprintf("Limit the number of rows (default: %d), set to 0 to disable", limit),
					Default: limit,
				})
				flags = append(flags, &cmds.Parameter{
					Name:    "offset",
					Type:    cmds.ParameterTypeInteger,
					Help:    fmt.Sprintf("Offset the number of rows (default: %d)", offset),
					Default: offset,
				})
				flags = append(flags, &cmds.Parameter{
					Name:    "distinct",
					Type:    cmds.ParameterTypeBool,
					Help:    fmt.Sprintf("Whether to select distinct rows (default: %t)", distinct),
					Default: distinct,
				})

				orderByHelp := "Order by"
				var orderDefault interface{}
				if order != "" {
					orderByHelp = fmt.Sprintf("Order by (default: %s)", order)
					orderDefault = order
				}
				flags = append(flags, &cmds.Parameter{
					Name:    "order_by",
					Type:    cmds.ParameterTypeString,
					Help:    orderByHelp,
					Default: orderDefault,
				})
			}

			sb := &strings.Builder{}
			_, _ = fmt.Fprintf(sb, "SELECT ")
			if !count {
				_, _ = fmt.Fprintf(sb, "{{ if .distinct }}DISTINCT{{ end }} ")
			}
			_, _ = fmt.Fprintf(sb, "%s FROM %s", strings.Join(columns, ", "), table)
			if where != "" {
				_, _ = fmt.Fprintf(sb, " WHERE %s", where)
			} else {
				_, _ = fmt.Fprintf(sb, "\n{{ if .where  }}  WHERE {{.where}} {{ end }}")
			}

			_, _ = fmt.Fprintf(sb, "\n{{ if .order_by }} ORDER BY {{ .order_by }}{{ end }}")
			_, _ = fmt.Fprintf(sb, "\n{{ if .limit }} LIMIT {{ .limit }}{{ end }}")
			_, _ = fmt.Fprintf(sb, "\nOFFSET {{ .offset }}")

			query := sb.String()
			sqlCommand := pkg.NewSqlCommand(&cmds.CommandDescription{
				Name:  createQuery,
				Short: short,
				Flags: flags,
			},
				query)

			yamlBytes, err := yaml.Marshal(sqlCommand)
			cobra.CheckErr(err)

			fmt.Println(string(yamlBytes))
			return
		}

		query, queryArgs := sb.Build()

		printQuery, err := cmd.Flags().GetBool("print-query")
		cobra.CheckErr(err)
		if printQuery {
			fmt.Println(query)
			fmt.Println(queryArgs)
			return
		}

		db, err := pkg.OpenDatabaseFromViper()
		cobra.CheckErr(err)

		dbContext := context.Background()
		err = db.PingContext(dbContext)
		cobra.CheckErr(err)

		gp, of, err := cli.SetupProcessor(cmd)
		cobra.CheckErr(err)

		err = pkg.RunQueryIntoGlaze(dbContext, db, query, queryArgs, gp)
		cobra.CheckErr(err)

		s, err := of.Output()
		cobra.CheckErr(err)

		fmt.Print(s)
	},
}