package consul

import (
	"errors"
	"fmt"
)

const (
	allEths  = "0.0.0.0"
	envPodIP = "POD_IP"

	defaultCheckPath = "/healthcheck"
)

// Conf is the config item with the given key on etcd.
type Conf struct {
	Host  string            // consul endpoint eg:127.0.0.1:8500
	Key   string            `json:",optional"`
	Token string            `json:",optional"`
	Tag   []string          `json:",optional"`
	Meta  map[string]string `json:",optional"`

	// ttl check
	TTL int `json:",default=20"` // Second
	// http check
	CheckPath string `json:",default=/healthcheck"`
	Interval  int    `json:",default=10"` // Second
	Timeout   int    `json:",default=1"`  // Second
}

// Validate validates c.
func (c *Conf) Validate() error {
	if len(c.Host) == 0 {
		return errors.New("empty consul hosts")
	}
	if len(c.Key) == 0 {
		return errors.New("empty consul key")
	}
	if c.TTL == 0 {
		c.TTL = 20
	}
	return nil
}

type BuildTargetConf struct {
	Service string
	Tags    []string
	Healthy bool
}

func (t *BuildTargetConf) String() string {
	return fmt.Sprintf("service='%s' healthy='%t' tags='%v'", t.Service, t.Healthy, t.Tags)
}