package services_test

import (
	"context"
	"regexp"
	"testing"
	"time"

	"github.com/DATA-DOG/go-sqlmock"
	"github.com/rede5/gohorsejobs/backend/internal/services"
	"github.com/stretchr/testify/assert"
)

func TestCreateTicket(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
	}
	defer db.Close()

	service := services.NewTicketService(db)

	tests := []struct {
		name     string
		userID   string
		subject  string
		priority string
		mockRun  func()
		wantErr  bool
	}{
		{
			name:     "Success",
			userID:   "user-1",
			subject:  "Help me",
			priority: "high",
			mockRun: func() {
				mock.ExpectQuery(regexp.QuoteMeta(`INSERT INTO tickets`)).
					WithArgs("user-1", "Help me", "high").
					WillReturnRows(sqlmock.NewRows([]string{"id", "user_id", "subject", "status", "priority", "created_at", "updated_at"}).
						AddRow("ticket-1", "user-1", "Help me", "open", "high", time.Now(), time.Now()))
			},
			wantErr: false,
		},
		{
			name:     "Default Priority",
			userID:   "user-1",
			subject:  "Help me",
			priority: "",
			mockRun: func() {
				mock.ExpectQuery(regexp.QuoteMeta(`INSERT INTO tickets`)).
					WithArgs("user-1", "Help me", "medium").
					WillReturnRows(sqlmock.NewRows([]string{"id", "user_id", "subject", "status", "priority", "created_at", "updated_at"}).
						AddRow("ticket-1", "user-1", "Help me", "open", "medium", time.Now(), time.Now()))
			},
			wantErr: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			tt.mockRun()
			got, err := service.CreateTicket(context.Background(), tt.userID, tt.subject, tt.priority)
			if (err != nil) != tt.wantErr {
				t.Errorf("TicketService.CreateTicket() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !tt.wantErr {
				assert.Equal(t, "ticket-1", got.ID)
			}
		})
	}
}

func TestListTickets(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
	}
	defer db.Close()

	service := services.NewTicketService(db)

	tests := []struct {
		name    string
		userID  string
		mockRun func()
		wantErr bool
	}{
		{
			name:   "Success",
			userID: "user-1",
			mockRun: func() {
				mock.ExpectQuery(regexp.QuoteMeta(`SELECT id, user_id, subject, status, priority, created_at, updated_at FROM tickets WHERE user_id = $1`)).
					WithArgs("user-1").
					WillReturnRows(sqlmock.NewRows([]string{"id", "user_id", "subject", "status", "priority", "created_at", "updated_at"}).
						AddRow("ticket-1", "user-1", "Help", "open", "medium", time.Now(), time.Now()).
						AddRow("ticket-2", "user-1", "Bug", "closed", "high", time.Now(), time.Now()))
			},
			wantErr: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			tt.mockRun()
			tickets, err := service.ListTickets(context.Background(), tt.userID)
			if (err != nil) != tt.wantErr {
				t.Errorf("TicketService.ListTickets() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !tt.wantErr {
				assert.Len(t, tickets, 2)
			}
		})
	}
}

func TestGetTicket(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
	}
	defer db.Close()

	service := services.NewTicketService(db)

	tests := []struct {
		name     string
		ticketID string
		userID   string
		mockRun  func()
		wantErr  bool
	}{
		{
			name:     "Success",
			ticketID: "ticket-1",
			userID:   "user-1",
			mockRun: func() {
				mock.ExpectQuery(regexp.QuoteMeta(`SELECT id, user_id, subject, status, priority, created_at, updated_at FROM tickets WHERE id = $1 AND user_id = $2`)).
					WithArgs("ticket-1", "user-1").
					WillReturnRows(sqlmock.NewRows([]string{"id", "user_id", "subject", "status", "priority", "created_at", "updated_at"}).
						AddRow("ticket-1", "user-1", "Help", "open", "medium", time.Now(), time.Now()))

				mock.ExpectQuery(regexp.QuoteMeta(`SELECT id, ticket_id, user_id, message, created_at FROM ticket_messages WHERE ticket_id = $1`)).
					WithArgs("ticket-1").
					WillReturnRows(sqlmock.NewRows([]string{"id", "ticket_id", "user_id", "message", "created_at"}).
						AddRow("msg-1", "ticket-1", "user-1", "Hello", time.Now()))
			},
			wantErr: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			tt.mockRun()
			ticket, msgs, err := service.GetTicket(context.Background(), tt.ticketID, tt.userID)
			if (err != nil) != tt.wantErr {
				t.Errorf("TicketService.GetTicket() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !tt.wantErr {
				assert.Equal(t, "ticket-1", ticket.ID)
				assert.Len(t, msgs, 1)
			}
		})
	}
}