package datadogunifi

import (
	"fmt"
	"strings"

	"github.com/unpoller/unifi"
)

func tag(name string, value interface{}) string {
	return fmt.Sprintf("%s:%v", name, value)
}

func tagMapToTags(tagMap map[string]string) []string {
	tags := make([]string, 0)
	for k, v := range tagMap {
		tags = append(tags, tag(k, v))
	}
	return tags
}

func tagMapToSimpleStrings(tagMap map[string]string) string {
	result := ""
	for k, v := range tagMap {
		result = fmt.Sprintf("%s%s=\"%v\", ", result, k, v)
	}
	return strings.TrimRight(result, ", ")
}

func metricNamespace(namespace string) func(string) string {
	return func(name string) string {
		return fmt.Sprintf("unifi.%s.%s", namespace, name)
	}
}

func reportGaugeForFloat64Map(r report, metricName func(string) string, data map[string]float64, tags map[string]string) {
	for name, value := range data {
		r.reportGauge(metricName(name), value, tagMapToTags(tags))
	}
}

// cleanTags removes any tag that is empty.
func cleanTags(tags map[string]string) map[string]string {
	for i := range tags {
		if tags[i] == "" {
			delete(tags, i)
		}
	}

	return tags
}

// cleanFields removes any field with a default (or empty) value.
func cleanFields(fields map[string]interface{}) map[string]interface{} { //nolint:cyclop
	for s := range fields {
		switch v := fields[s].(type) {
		case nil:
			delete(fields, s)
		case int, int64, float64:
			if v == 0 {
				delete(fields, s)
			}
		case unifi.FlexBool:
			if v.Txt == "" {
				delete(fields, s)
			}
		case unifi.FlexInt:
			if v.Txt == "" {
				delete(fields, s)
			}
		case string:
			if v == "" {
				delete(fields, s)
			}
		}
	}

	return fields
}