package web_test

import (
	"encoding/json"
	"io"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"

	"code.severnaya.net/kordophone-mock/v2/model"
	"code.severnaya.net/kordophone-mock/v2/web"
)

func TestVersion(t *testing.T) {
	s := httptest.NewServer(web.NewMockHTTPServer())

	resp, err := http.Get(s.URL + "/version")
	if err != nil {
		t.Fatalf("TestVersion error: %s", err)
	}

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		t.Fatalf("Error decoding body: %s", body)
	}

	if string(body) != "1.0" {
		t.Fatalf("Unexpected return value: %s (expected %s)", body, "1.0")
	}
}

func TestStatus(t *testing.T) {
	s := httptest.NewServer(web.NewMockHTTPServer())

	resp, err := http.Get(s.URL + "/status")
	if err != nil {
		t.Fatalf("TestStatus error: %s", err)
	}

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		t.Fatalf("Error decoding body: %s", body)
	}

	if string(body) != "OK" {
		t.Fatalf("Unexpected return value: %s (expected %s)", body, "OK")
	}
}

func TestConversations(t *testing.T) {
	server := web.NewMockHTTPServer()
	httpServer := httptest.NewServer(server)

	conversation := model.Conversation{
		Date:               time.Now(),
		Participants:       []string{"Alice", "Bob"},
		UnreadCount:        1,
		LastMessagePreview: "Hello world",
		Guid:               "1234567890",
	}

	server.Server.AddConversation(conversation)

	resp, err := http.Get(httpServer.URL + "/conversations")
	if err != nil {
		t.Fatalf("TestConversations error: %s", err)
	}

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		t.Fatalf("Error decoding body: %s", body)
	}

	var convos []model.Conversation
	err = json.Unmarshal(body, &convos)
	if err != nil {
		t.Fatalf("Error unmarshalling JSON: %s", err)
	}

	if len(convos) != 1 {
		t.Fatalf("Unexpected number of conversations: %d (expected %d)", len(convos), 1)
	}

	if convos[0].Guid != conversation.Guid {
		t.Fatalf("Unexpected conversation GUID: %s (expected %s)", convos[0].Guid, conversation.Guid)
	}

	if convos[0].LastMessagePreview != conversation.LastMessagePreview {
		t.Fatalf("Unexpected conversation LastMessagePreview: %s (expected %s)", convos[0].LastMessagePreview, conversation.LastMessagePreview)
	}

	if convos[0].UnreadCount != conversation.UnreadCount {
		t.Fatalf("Unexpected conversation UnreadCount: %d (expected %d)", convos[0].UnreadCount, conversation.UnreadCount)
	}

	for i, p := range convos[0].Participants {
		if p != conversation.Participants[i] {
			t.Fatalf("Unexpected conversation Participants: %s (expected %s)", p, conversation.Participants[i])
		}
	}

	if !convos[0].Date.Equal(conversation.Date) {
		t.Fatalf("Unexpected conversation Date: %s (expected %s)", convos[0].Date, conversation.Date)
	}
}