package imgurl

import (
	"strings"
	"testing"
)

// TestDisplayStyle 验证新模型（2026-09-11）：VIP 与免费用户同质量，统一走展示样式。
//   - 命名样式（默认 high）：base_url/key!style:high
//   - 查询串模式（style 含 =）：base_url/key?w=..&q=..
//   - /uploads/ 与 http(s) 原样返回
func TestDisplayStyle(t *testing.T) {
	c := New("https://mybucket.s3.bitiful.net", "high", "thumb", "")
	got := c.Compose("runway/abc123.jpg")
	want := "https://mybucket.s3.bitiful.net/runway/abc123.jpg!style:high"
	if got != want {
		t.Fatalf("命名样式拼装错误: 期望 %s 实际 %s", want, got)
	}

	// 缺省回落 high
	c0 := New("https://mybucket.s3.bitiful.net", "", "", "")
	if c0.Compose("runway/abc123.jpg") != "https://mybucket.s3.bitiful.net/runway/abc123.jpg!style:high" {
		t.Fatal("style 缺省应回落 high")
	}

	// 查询串模式
	cq := New("https://mybucket.s3.bitiful.net", "w=1080&q=80&fmt=webp", "", "")
	gq := cq.Compose("runway/abc123.jpg")
	wq := "https://mybucket.s3.bitiful.net/runway/abc123.jpg?w=1080&q=80&fmt=webp"
	if gq != wq {
		t.Fatalf("查询串模式拼装错误: 期望 %s 实际 %s", wq, gq)
	}

	// 本地兜底与外链原样返回
	if c.Compose("/uploads/runway/x.jpg") != "/uploads/runway/x.jpg" {
		t.Fatal("/uploads/ 应原样返回")
	}
	if c.Compose("https://vogue.com/foo.jpg") != "https://vogue.com/foo.jpg" {
		t.Fatal("http(s) 应原样返回")
	}
	if c.Compose("") != "" {
		t.Fatal("空串应返回空")
	}
}

// TestComposeThumb 验证列表缩略图拼装：走 StyleThumb，兜底逻辑与 Compose 一致。
func TestComposeThumb(t *testing.T) {
	c := New("https://mybucket.s3.bitiful.net", "high", "thumb", "")
	got := c.ComposeThumb("runway/abc123.jpg")
	want := "https://mybucket.s3.bitiful.net/runway/abc123.jpg!style:thumb"
	if got != want {
		t.Fatalf("缩略图样式拼装错误: 期望 %s 实际 %s", want, got)
	}

	// 未配置 styleThumb 时应回落展示样式，不得拼出空样式（key!style:）
	c0 := New("https://mybucket.s3.bitiful.net", "high", "", "")
	if got := c0.ComposeThumb("runway/abc123.jpg"); got != "https://mybucket.s3.bitiful.net/runway/abc123.jpg!style:high" {
		t.Fatalf("styleThumb 缺省应回落 styleDisplay，实际 %s", got)
	}

	// 兜底：本地路径 / 外链 / 空串
	if c.ComposeThumb("/uploads/runway/x.jpg") != "/uploads/runway/x.jpg" {
		t.Fatal("/uploads/ 应原样返回")
	}
	if c.ComposeThumb("https://vogue.com/foo.jpg") != "https://vogue.com/foo.jpg" {
		t.Fatal("http(s) 应原样返回")
	}
	if c.ComposeThumb("") != "" {
		t.Fatal("空串应返回空")
	}
}

// TestDisplayStyleURLSafe 确认展示 URL 不含任何签名/过期参数（匿名可访问）。
func TestDisplayStyleURLSafe(t *testing.T) {
	c := New("https://mybucket.s3.bitiful.net", "high", "thumb", "")
	u := c.Compose("runway/abc123.jpg")
	for _, bad := range []string{"X-Amz", "sign", "e="} {
		if strings.Contains(u, bad) {
			t.Fatalf("展示 URL 不应含签名参数 %q，实际: %s", bad, u)
		}
	}
}