package httpc

import (
	"io"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestGet(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodGet {
			t.Errorf("Method = %s, want GET", r.Method)
		}
		if r.URL.Query().Get("name") != "zogo" {
			t.Errorf("query name = %q", r.URL.Query().Get("name"))
		}
		w.Write([]byte(`{"ok":true}`))
	}))
	defer ts.Close()

	body, err := Get(ts.URL+"/get?name=zogo", nil)
	if err != nil {
		t.Fatalf("Get: %v", err)
	}
	if string(body) != `{"ok":true}` {
		t.Errorf("body = %q", string(body))
	}
}

func TestGetWithHeader(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Header.Get("X-Token") != "abc" {
			t.Errorf("X-Token = %q", r.Header.Get("X-Token"))
		}
		w.Write([]byte("ok"))
	}))
	defer ts.Close()

	if _, err := Get(ts.URL, map[string]string{"X-Token": "abc"}); err != nil {
		t.Fatalf("Get: %v", err)
	}
}

func TestPost(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodPost {
			t.Errorf("Method = %s, want POST", r.Method)
		}
		if r.Header.Get("Content-Type") != "application/json" {
			t.Errorf("Content-Type = %q, want application/json", r.Header.Get("Content-Type"))
		}
		b, _ := io.ReadAll(r.Body)
		if string(b) != `{"id":1}` {
			t.Errorf("body = %q", string(b))
		}
		w.Write([]byte("posted"))
	}))
	defer ts.Close()

	body, err := Post(ts.URL, []byte(`{"id":1}`), nil)
	if err != nil {
		t.Fatalf("Post: %v", err)
	}
	if string(body) != "posted" {
		t.Errorf("body = %q", string(body))
	}
}

func TestPostCustomContentType(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if !strings.HasPrefix(r.Header.Get("Content-Type"), "text/plain") {
			t.Errorf("Content-Type = %q, want text/plain", r.Header.Get("Content-Type"))
		}
	}))
	defer ts.Close()

	if _, err := Post(ts.URL, []byte("text"), map[string]string{"Content-Type": "text/plain"}); err != nil {
		t.Fatalf("Post: %v", err)
	}
}

func TestPut(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodPut {
			t.Errorf("Method = %s, want PUT", r.Method)
		}
		w.Write([]byte("putted"))
	}))
	defer ts.Close()

	body, err := Put(ts.URL, []byte(`{}`), nil)
	if err != nil || string(body) != "putted" {
		t.Errorf("Put = %q, %v", string(body), err)
	}
}

func TestDelete(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodDelete {
			t.Errorf("Method = %s, want DELETE", r.Method)
		}
		w.Write([]byte("deleted"))
	}))
	defer ts.Close()

	body, err := Delete(ts.URL, []byte(`{}`), nil)
	if err != nil || string(body) != "deleted" {
		t.Errorf("Delete = %q, %v", string(body), err)
	}
}

func TestGetProxyEmptyProxy(t *testing.T) {
	// 代理地址为空时应直连
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("direct"))
	}))
	defer ts.Close()

	body, err := GetProxy(ts.URL, nil, "")
	if err != nil || string(body) != "direct" {
		t.Errorf("GetProxy 空代理 = %q, %v", string(body), err)
	}
}

func TestErrorStatusCode(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusInternalServerError)
	}))
	defer ts.Close()

	_, err := Get(ts.URL, nil)
	if err == nil || !strings.Contains(err.Error(), "500") {
		t.Errorf("非 2xx 响应应返回错误，got %v", err)
	}
}