//go:build go1.18
// +build go1.18

package starlog

import (
	"context"
	"testing"
)

func FuzzTextAndJSONFormatter(f *testing.F) {
	f.Add("hello", "user_id", "42")
	f.Add("error happened", "token", "abc123")

	f.Fuzz(func(t *testing.T, message string, key string, value string) {
		entry := &Entry{
			Context:   context.Background(),
			Level:     LvInfo,
			LevelName: "INFO",
			Message:   message,
			Fields:    Fields{},
		}
		if key != "" {
			entry.Fields[key] = value
		}

		text, err := NewTextFormatter().Format(entry)
		if err != nil {
			t.Fatalf("text format failed: %v", err)
		}
		if len(text) == 0 && (message != "" || len(entry.Fields) > 0) {
			t.Fatalf("text formatter output is unexpectedly empty")
		}

		js, err := NewJSONFormatter().Format(entry)
		if err != nil {
			t.Fatalf("json format failed: %v", err)
		}
		if len(js) == 0 {
			t.Fatalf("json formatter output is unexpectedly empty")
		}
	})
}

func FuzzKeywordHighlight(f *testing.F) {
	f.Add("panic at line", "panic")
	f.Add("token leaked", "token")

	f.Fuzz(func(t *testing.T, input string, keyword string) {
		core := newLogCore(nil)
		core.showColor = true
		core.onlyColorLevel = true
		core.keywordColors = map[string][]Attr{}
		if keyword != "" {
			core.keywordColors[keyword] = []Attr{FgRed}
		}
		_ = core.highlightKeywords(input)
	})
}