package platform

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestPutClipboard(t *testing.T) {
	var gotAuth, gotDevice, gotCT string
	var gotBody map[string]string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodPut || r.URL.Path != "/api/clipboard" {
			t.Errorf("method/path = %s %s", r.Method, r.URL.Path)
		}
		gotAuth = r.Header.Get("Authorization")
		gotDevice = r.Header.Get("X-Device-Name")
		gotCT = r.Header.Get("Content-Type")
		_ = json.NewDecoder(r.Body).Decode(&gotBody)
		w.WriteHeader(http.StatusOK)
	}))
	defer srv.Close()

	c := NewClient(srv.URL, "tok-abc", "my-mac")
	if err := c.PutClipboard(context.Background(), "hello world"); err != nil {
		t.Fatalf("PutClipboard: %v", err)
	}
	if gotAuth != "Bearer tok-abc" {
		t.Errorf("Authorization = %q, want Bearer tok-abc", gotAuth)
	}
	if gotDevice != "my-mac" {
		t.Errorf("X-Device-Name = %q, want my-mac", gotDevice)
	}
	if gotCT != "application/json" {
		t.Errorf("Content-Type = %q", gotCT)
	}
	if gotBody["content"] != "hello world" || gotBody["content_type"] != "text/plain" {
		t.Errorf("body = %v", gotBody)
	}
}

func TestPutClipboard_TooLarge(t *testing.T) {
	c := NewClient("https://example", "tok", "dev")
	big := strings.Repeat("x", ClipboardMaxBytes+1)
	if err := c.PutClipboard(context.Background(), big); err == nil {
		t.Fatal("want error for oversized content, got nil")
	}
}

func TestClipboard_Get(t *testing.T) {
	var gotAuth string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotAuth = r.Header.Get("Authorization")
		w.Header().Set("Content-Type", "application/json")
		_ = json.NewEncoder(w).Encode(ClipboardContent{
			Content:      "from cloud",
			ContentType:  "text/plain",
			SourceDevice: "other-device",
			UpdatedAt:    1700000000,
		})
	}))
	defer srv.Close()

	c := NewClient(srv.URL, "tok-xyz", "my-mac")
	cc, err := c.Clipboard(context.Background())
	if err != nil {
		t.Fatalf("Clipboard: %v", err)
	}
	if gotAuth != "Bearer tok-xyz" {
		t.Errorf("Authorization = %q", gotAuth)
	}
	if cc.Content != "from cloud" || cc.SourceDevice != "other-device" || cc.UpdatedAt != 1700000000 {
		t.Errorf("clipboard = %+v", cc)
	}
}

func TestClipboard_Unauthorized(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
		w.WriteHeader(http.StatusUnauthorized)
	}))
	defer srv.Close()

	c := NewClient(srv.URL, "bad", "dev")
	if _, err := c.Clipboard(context.Background()); err == nil {
		t.Fatal("want error for 401, got nil")
	}
}
