package model

import (
	"context"
	"fmt"

	"github.com/zeromicro/go-zero/core/stores/cache"
	"github.com/zeromicro/go-zero/core/stores/sqlc"
	"github.com/zeromicro/go-zero/core/stores/sqlx"
)

var _ MachineNodeModel = (*customMachineNodeModel)(nil)

type (
	// MachineNodeModel is an interface to be customized, add more methods here,
	// and implement the added methods in customMachineNodeModel.
	MachineNodeModel interface {
		machineNodeModel
		FindOneByHostName(ctx context.Context, hostName string) (*MachineNode, error)
	}

	customMachineNodeModel struct {
		*defaultMachineNodeModel
	}
)

// NewMachineNodeModel returns a model for the database table.
func NewMachineNodeModel(conn sqlx.SqlConn, c cache.CacheConf, opts ...cache.Option) MachineNodeModel {
	return &customMachineNodeModel{
		defaultMachineNodeModel: newMachineNodeModel(conn, c, opts...),
	}
}

func (m *defaultMachineNodeModel) FindOneByHostName(ctx context.Context, hostName string) (*MachineNode, error) {
	machineNodeIdKey := fmt.Sprintf("%s%v", cacheMachineNodeIdPrefix, hostName)
	var resp MachineNode
	err := m.QueryRowCtx(ctx, &resp, machineNodeIdKey, func(ctx context.Context, conn sqlx.SqlConn, v any) error {
		query := fmt.Sprintf("select %s from %s where `host_name` = ? limit 1", machineNodeRows, m.table)
		return conn.QueryRowCtx(ctx, v, query, hostName)
	})
	switch err {
	case nil:
		return &resp, nil
	case sqlc.ErrNotFound:
		return nil, ErrNotFound
	default:
		return nil, err
	}
}