package qiniu

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"testing"
	"time"

	"u-desk/internal/oss"
)

// 临时测试配置 — 提交前删除此文件
func testConfig() *Config {
	return &Config{
		AccessKey: "eUjiDJGy9CkRb3-Ad3jCubPrm49xeBTesHYckIwc",
		SecretKey: "LE8XL-LmoMkpy0jNK-kDhgL_w7A6MRXD1Msqd1Y4",
		Bucket:    "u-res",
		Region:    "as0",
		UseHTTPS:  true,
	}
}

const testKey = "music/03.一人一首成名曲【特调音源】/001.雨一直下-张宇.mp3"

// TestListBuckets 列举桶
func TestListBuckets(t *testing.T) {
	buckets, err := ListBuckets("eUjiDJGy9CkRb3-Ad3jCubPrm49xeBTesHYckIwc", "LE8XL-LmoMkpy0jNK-kDhgL_w7A6MRXD1Msqd1Y4")
	if err != nil {
		t.Fatalf("ListBuckets 失败: %v", err)
	}
	for _, b := range buckets {
		t.Logf("桶: %s  区域: %s", b.Name, b.Region)
	}
}

// TestGetBucketDomains 获取桶域名
func TestGetBucketDomains(t *testing.T) {
	c, err := NewClient(testConfig())
	if err != nil {
		t.Fatal(err)
	}
	defer c.Close()

	domains, err := c.GetBucketDomains(context.Background())
	if err != nil {
		t.Fatalf("获取域名失败: %v", err)
	}
	t.Logf("桶域名: %v", domains)
}

// TestDownloadDirect 裸 URL 下载（测试桶公开/私有）
func TestDownloadDirect(t *testing.T) {
	c, err := NewClient(testConfig())
	if err != nil {
		t.Fatal(err)
	}
	defer c.Close()

	domain, err := c.resolveDownloadDomain()
	if err != nil {
		t.Fatalf("获取下载域名失败: %v", err)
	}
	t.Logf("下载域名: %s", domain)

	rawURL := fmt.Sprintf("%s/%s", domain, testKey)
	t.Logf("裸 URL: %s", rawURL)

	httpResp, err := http.Get(rawURL)
	if err != nil {
		t.Fatalf("请求失败: %v", err)
	}
	defer httpResp.Body.Close()
	t.Logf("裸 URL 状态码: %d", httpResp.StatusCode)

	var buf bytes.Buffer
	buf.ReadFrom(httpResp.Body)
	t.Logf("响应大小: %d bytes", buf.Len())
}

// TestDownloadSigned 签名 URL 下载
func TestDownloadSigned(t *testing.T) {
	c, err := NewClient(testConfig())
	if err != nil {
		t.Fatal(err)
	}
	defer c.Close()

	signedURL, err := c.GetSignedURL(context.Background(), testKey, 1*time.Hour)
	if err != nil {
		t.Fatalf("生成签名 URL 失败: %v", err)
	}
	t.Logf("签名 URL: %s...", signedURL[:min(120, len(signedURL))])

	httpResp, err := http.Get(signedURL)
	if err != nil {
		t.Fatalf("请求失败: %v", err)
	}
	defer httpResp.Body.Close()
	t.Logf("签名 URL 状态码: %d", httpResp.StatusCode)

	var buf bytes.Buffer
	buf.ReadFrom(httpResp.Body)
	t.Logf("下载大小: %d bytes", buf.Len())

	if httpResp.StatusCode != 200 {
		t.Errorf("下载失败: %d, body: %s", httpResp.StatusCode, buf.String()[:min(200, buf.Len())])
	}
}

// TestDownloadViaClient 通过 Client.Download 方法下载
func TestDownloadViaClient(t *testing.T) {
	c, err := NewClient(testConfig())
	if err != nil {
		t.Fatal(err)
	}
	defer c.Close()

	var buf bytes.Buffer
	err = c.Download(context.Background(), testKey, &buf)
	if err != nil {
		t.Errorf("Client.Download 失败: %v", err)
	} else {
		t.Logf("Client.Download 成功，大小: %d bytes (预期 ~7MB)", buf.Len())
	}
}

// TestGetFileInfo 获取文件信息
func TestGetFileInfo(t *testing.T) {
	c, err := NewClient(testConfig())
	if err != nil {
		t.Fatal(err)
	}
	defer c.Close()

	info, err := c.GetFileInfo(context.Background(), testKey)
	if err != nil {
		t.Errorf("GetFileInfo 失败: %v", err)
	} else {
		t.Logf("GetFileInfo: key=%s size=%d", info.Key, info.Size)
	}
}

// TestListFiles 列举文件
func TestListFiles(t *testing.T) {
	c, err := NewClient(testConfig())
	if err != nil {
		t.Fatal(err)
	}
	defer c.Close()

	result, err := c.ListFiles(context.Background(), &oss.ListOptions{Prefix: "music/", MaxKeys: 10})
	if err != nil {
		t.Fatalf("ListFiles 失败: %v", err)
	}
	for _, f := range result.Files {
		t.Logf("文件: %-80s size: %d", f.Key, f.Size)
	}
}

// TestListFilesRaw 原始 RSF 请求查看响应结构
func TestListFilesRaw(t *testing.T) {
	c, err := NewClient(testConfig())
	if err != nil {
		t.Fatal(err)
	}
	defer c.Close()

	resp, err := c.doRSFRequest("GET", fmt.Sprintf("/list?bucket=%s&limit=3&prefix=music/", testConfig().Bucket))
	if err != nil {
		t.Fatal(err)
	}
	defer resp.Body.Close()

	var buf bytes.Buffer
	buf.ReadFrom(resp.Body)

	var pretty bytes.Buffer
	json.Indent(&pretty, buf.Bytes(), "", "  ")
	t.Logf("原始响应:\n%s", pretty.String())
}

func min(a, b int) int {
	if a < b {
		return a
	}
	return b
}