// Copyright 2025 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package api

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

	"code.gitea.io/tea/modules/config"
)

func TestNewClient(t *testing.T) {
	login := &config.Login{
		URL:      "https://gitea.example.com",
		Token:    "test-token",
		Insecure: false,
	}

	client := NewClient(login)
	if client == nil {
		t.Fatal("NewClient returned nil")
	}

	if client.login != login {
		t.Error("Client login not set correctly")
	}

	if client.httpClient == nil {
		t.Error("Client httpClient not set")
	}
}

func TestNewClientInsecure(t *testing.T) {
	login := &config.Login{
		URL:      "https://gitea.example.com",
		Token:    "test-token",
		Insecure: true,
	}

	client := NewClient(login)
	if client == nil {
		t.Fatal("NewClient returned nil")
	}

	// Verify that insecure transport is configured
	if client.httpClient.Transport == nil {
		t.Error("Expected custom transport for insecure client")
	}
}

func TestGet(t *testing.T) {
	// Create a test server
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		// Verify request
		if r.Method != "GET" {
			t.Errorf("Expected GET request, got %s", r.Method)
		}

		if r.Header.Get("Authorization") != "token test-token" {
			t.Errorf("Expected authorization header, got %s", r.Header.Get("Authorization"))
		}

		if r.Header.Get("Accept") != "application/json" {
			t.Errorf("Expected accept header, got %s", r.Header.Get("Accept"))
		}

		// Return test response
		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
	}))
	defer server.Close()

	login := &config.Login{
		URL:   server.URL,
		Token: "test-token",
	}

	client := NewClient(login)

	var result map[string]string
	_, err := client.Get(context.Background(), "/test", &result)
	if err != nil {
		t.Fatalf("Get returned error: %v", err)
	}

	if result["status"] != "ok" {
		t.Errorf("Expected status 'ok', got %s", result["status"])
	}
}

func TestGetError(t *testing.T) {
	// Create a test server that returns an error
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusNotFound)
		w.Write([]byte("not found"))
	}))
	defer server.Close()

	login := &config.Login{
		URL:   server.URL,
		Token: "test-token",
	}

	client := NewClient(login)

	var result map[string]string
	_, err := client.Get(context.Background(), "/test", &result)
	if err == nil {
		t.Fatal("Expected error for 404 response")
	}

	expectedError := "API request failed with status 404"
	if err.Error()[:len(expectedError)] != expectedError {
		t.Errorf("Expected error starting with '%s', got '%s'", expectedError, err.Error())
	}
}

func TestGetRaw(t *testing.T) {
	expectedBody := "raw log content here"

	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != "GET" {
			t.Errorf("Expected GET request, got %s", r.Method)
		}

		if r.Header.Get("Authorization") != "token test-token" {
			t.Errorf("Expected authorization header, got %s", r.Header.Get("Authorization"))
		}

		w.Write([]byte(expectedBody))
	}))
	defer server.Close()

	login := &config.Login{
		URL:   server.URL,
		Token: "test-token",
	}

	client := NewClient(login)

	body, err := client.GetRaw(context.Background(), "/logs")
	if err != nil {
		t.Fatalf("GetRaw returned error: %v", err)
	}

	if string(body) != expectedBody {
		t.Errorf("Expected body '%s', got '%s'", expectedBody, string(body))
	}
}

func TestGetRawError(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusInternalServerError)
		w.Write([]byte("internal error"))
	}))
	defer server.Close()

	login := &config.Login{
		URL:   server.URL,
		Token: "test-token",
	}

	client := NewClient(login)

	_, err := client.GetRaw(context.Background(), "/logs")
	if err == nil {
		t.Fatal("Expected error for 500 response")
	}

	expectedError := "API request failed with status 500"
	if err.Error()[:len(expectedError)] != expectedError {
		t.Errorf("Expected error starting with '%s', got '%s'", expectedError, err.Error())
	}
}

func TestGetWithContextCancellation(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		// This should not be reached if context is cancelled
		w.Write([]byte("ok"))
	}))
	defer server.Close()

	login := &config.Login{
		URL:   server.URL,
		Token: "test-token",
	}

	client := NewClient(login)

	// Create a cancelled context
	ctx, cancel := context.WithCancel(context.Background())
	cancel()

	var result map[string]string
	_, err := client.Get(ctx, "/test", &result)
	if err == nil {
		t.Fatal("Expected error for cancelled context")
	}
}