package app

import (
	"fmt"
	"sort"
	"strings"
)

func findProfileDuplicates(profiles []TrafficAppProfile) []string {
	return collectTargetKeyDuplicates(func(add func(target, key string)) {
		for _, p := range profiles {
			add(p.Target, p.AppKey)
		}
	})
}

func findMarkDuplicates(items []appMarkItem) []string {
	return collectTargetKeyDuplicates(func(add func(target, key string)) {
		for _, it := range items {
			add(it.Target, it.AppKey)
		}
	})
}

func collectTargetKeyDuplicates(feed func(add func(target, key string))) []string {
	seen := map[string]int{}
	feed(func(target, key string) {
		tgt := strings.ToLower(strings.TrimSpace(target))
		k := strings.TrimSpace(key)
		if tgt == "" || k == "" {
			return
		}
		seen[tgt+"|"+k]++
	})

	var out []string
	for k, n := range seen {
		if n > 1 {
			out = append(out, fmt.Sprintf("%s x%d", k, n))
		}
	}
	sort.Strings(out)
	return out
}