package creator

import (
	"encoding/json"
	"testing"
)

func TestSlicePageUsesEmptyDataArray(t *testing.T) {
	page, err := slicePage[string](nil, 1, 25)
	if err != nil {
		t.Fatal(err)
	}
	encoded, err := json.Marshal(page)
	if err != nil {
		t.Fatal(err)
	}
	if string(encoded) != `{"data":[],"page":1,"page_size":25,"total":0,"has_next":false}` {
		t.Fatalf("empty page JSON = %s", encoded)
	}
}

func TestParseGeneratedRewriteRequiresBoundedJSON(t *testing.T) {
	title, script, err := parseGeneratedRewrite(`{"title":"新标题","script":"新脚本"}`)
	if err != nil || title != "新标题" || script != "新脚本" {
		t.Fatalf("parseGeneratedRewrite() = %q, %q, %v", title, script, err)
	}
	for _, content := range []string{
		"",
		"不是 JSON",
		`{"title":"有标题"}`,
		`{"title":"标题","script":""}`,
	} {
		if _, _, err := parseGeneratedRewrite(content); err == nil {
			t.Fatalf("parseGeneratedRewrite(%q) accepted invalid output", content)
		}
	}
}

func TestValidateCreatorTags(t *testing.T) {
	valid := make([]string, 20)
	for i := range valid {
		valid[i] = "标签"
	}
	if err := validateCreatorTags(valid); err != nil {
		t.Fatalf("validateCreatorTags(valid) = %v", err)
	}
	for name, tags := range map[string][]string{
		"too many": append(valid, "额外"),
		"empty":    {""},
		"spaced":   {" 标签"},
		"too long": {string(make([]rune, 33))},
	} {
		if err := validateCreatorTags(tags); err == nil {
			t.Fatalf("validateCreatorTags(%s) accepted invalid tags", name)
		}
	}
}