package handlers

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

	archivalDomain "git.nakama.town/fmartingr/hako/internal/archival/domain"
	authDomain "git.nakama.town/fmartingr/hako/internal/auth/domain"
	"git.nakama.town/fmartingr/hako/internal/server/middleware"
	"git.nakama.town/fmartingr/hako/internal/testutil"
	"github.com/stretchr/testify/require"
)

func TestHandleLogin_Success(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Initialize domains
	deps.Dependencies.Domains().SetLinks(archivalDomain.NewLinkDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetArchives(archivalDomain.NewArchiveDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetCategories(archivalDomain.NewCategoryDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetAuth(authDomain.NewAuthDomain(deps.Dependencies))

	// Create a test user first
	_, _, err := testutil.NewTestUser(t, deps.Dependencies, "test@example.com", "testpassword123")
	require.NoError(t, err)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Create login request
	loginReq := map[string]string{
		"email":    "test@example.com",
		"password": "testpassword123",
	}
	body, _ := json.Marshal(loginReq)

	// Perform request
	w := testutil.PerformRequest(authHandler.HandleLogin, http.MethodPost, "/api/v1/auth/login",
		testutil.WithBody(string(body)),
		testutil.WithHeader("Content-Type", "application/json"),
	)

	// Assert response
	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusOK)

	// Check response structure
	tokenValue := resp.AssertJSONContainsKey(t, "token")
	require.NotEmpty(t, tokenValue)

	userValue := resp.AssertJSONContainsKey(t, "user")
	userMap, ok := userValue.(map[string]any)
	require.True(t, ok)
	require.Equal(t, "test@example.com", userMap["email"])
	// Verify role is returned (should default to "user")
	require.Equal(t, "user", userMap["role"])
}

func TestHandleLogin_InvalidCredentials(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Initialize domains
	deps.Dependencies.Domains().SetLinks(archivalDomain.NewLinkDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetArchives(archivalDomain.NewArchiveDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetCategories(archivalDomain.NewCategoryDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetAuth(authDomain.NewAuthDomain(deps.Dependencies))

	// Create a test user first
	_, _, err := testutil.NewTestUser(t, deps.Dependencies, "test@example.com", "testpassword123")
	require.NoError(t, err)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Create login request with wrong password
	loginReq := map[string]string{
		"email":    "test@example.com",
		"password": "wrongpassword",
	}
	body, _ := json.Marshal(loginReq)

	// Perform request
	w := testutil.PerformRequest(authHandler.HandleLogin, http.MethodPost, "/api/v1/auth/login",
		testutil.WithBody(string(body)),
		testutil.WithHeader("Content-Type", "application/json"),
	)

	// Assert response
	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusUnauthorized)
	resp.AssertBodyContains(t, "Invalid credentials")
}

func TestHandleLogin_MissingFields(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Test with empty email
	loginReq := map[string]string{
		"email":    "",
		"password": "testpassword123",
	}
	body, _ := json.Marshal(loginReq)

	w := testutil.PerformRequest(authHandler.HandleLogin, http.MethodPost, "/api/v1/auth/login",
		testutil.WithBody(string(body)),
		testutil.WithHeader("Content-Type", "application/json"),
	)

	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusBadRequest)
	resp.AssertBodyContains(t, "Email and password are required")

	// Test with empty password
	loginReq = map[string]string{
		"email":    "test@example.com",
		"password": "",
	}
	body, _ = json.Marshal(loginReq)

	w = testutil.PerformRequest(authHandler.HandleLogin, http.MethodPost, "/api/v1/auth/login",
		testutil.WithBody(string(body)),
		testutil.WithHeader("Content-Type", "application/json"),
	)

	resp = testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusBadRequest)
	resp.AssertBodyContains(t, "Email and password are required")
}

func TestHandleLogin_InvalidMethod(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Try GET instead of POST
	w := testutil.PerformRequest(authHandler.HandleLogin, http.MethodGet, "/api/v1/auth/login")

	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusMethodNotAllowed)
	resp.AssertBodyContains(t, "Method not allowed")
}

func TestHandleGetCurrentUser_Success(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Initialize domains
	deps.Dependencies.Domains().SetLinks(archivalDomain.NewLinkDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetArchives(archivalDomain.NewArchiveDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetCategories(archivalDomain.NewCategoryDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetAuth(authDomain.NewAuthDomain(deps.Dependencies))

	// Create a test user and get token
	user, token, err := testutil.NewTestUser(t, deps.Dependencies, "test@example.com", "testpassword123")
	require.NoError(t, err)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Create handlers with new middleware pattern
	// Global auth middleware sets context if token is present
	globalAuthMiddleware := middleware.AuthMiddleware(deps.Dependencies.GetJWTService(), deps.Dependencies.UserStore)
	// Require auth middleware blocks if not authenticated
	requireAuthMiddleware := middleware.RequireAuthMiddleware()
	handler := globalAuthMiddleware(requireAuthMiddleware(http.HandlerFunc(authHandler.HandleGetCurrentUser)))

	// Perform authenticated request
	w := testutil.PerformRequestWithHandler(handler, http.MethodGet, "/api/v1/auth/me",
		testutil.WithAuthToken(token),
	)

	// Assert response
	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusOK)

	// Check response structure
	emailValue := resp.AssertJSONContainsKey(t, "email")
	require.Equal(t, user.Email, emailValue)
	// Verify role is returned
	roleValue := resp.AssertJSONContainsKey(t, "role")
	require.Equal(t, "user", roleValue)
}

func TestHandleGetCurrentUser_Unauthorized(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Create handlers with new middleware pattern
	globalAuthMiddleware := middleware.AuthMiddleware(deps.Dependencies.GetJWTService(), deps.Dependencies.UserStore)
	requireAuthMiddleware := middleware.RequireAuthMiddleware()
	handler := globalAuthMiddleware(requireAuthMiddleware(http.HandlerFunc(authHandler.HandleGetCurrentUser)))

	// Perform request without token
	w := testutil.PerformRequestWithHandler(handler, http.MethodGet, "/api/v1/auth/me")

	// Assert response
	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusUnauthorized)
	resp.AssertBodyContains(t, "Authorization required")
}

func TestHandleGetCurrentUser_InvalidToken(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Create handlers with new middleware pattern
	globalAuthMiddleware := middleware.AuthMiddleware(deps.Dependencies.GetJWTService(), deps.Dependencies.UserStore)
	requireAuthMiddleware := middleware.RequireAuthMiddleware()
	handler := globalAuthMiddleware(requireAuthMiddleware(http.HandlerFunc(authHandler.HandleGetCurrentUser)))

	// Perform request with invalid token
	w := testutil.PerformRequestWithHandler(handler, http.MethodGet, "/api/v1/auth/me",
		testutil.WithAuthToken("invalid-token"),
	)

	// Assert response
	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusUnauthorized)
	resp.AssertBodyContains(t, "Authorization required")
}

func TestHandleGetCurrentUser_InvalidMethod(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Try POST instead of GET
	w := testutil.PerformRequest(authHandler.HandleGetCurrentUser, http.MethodPost, "/api/v1/auth/me")

	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusMethodNotAllowed)
	resp.AssertBodyContains(t, "Method not allowed")
}

func TestHandleLogin_ReturnsRole(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Initialize domains
	deps.Dependencies.Domains().SetLinks(archivalDomain.NewLinkDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetArchives(archivalDomain.NewArchiveDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetCategories(archivalDomain.NewCategoryDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetAuth(authDomain.NewAuthDomain(deps.Dependencies))

	// Create a test admin user
	_, _, err := testutil.NewTestAdminUser(t, deps.Dependencies, "admin@example.com", "adminpassword123")
	require.NoError(t, err)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Create login request
	loginReq := map[string]string{
		"email":    "admin@example.com",
		"password": "adminpassword123",
	}
	body, _ := json.Marshal(loginReq)

	// Perform request
	w := testutil.PerformRequest(authHandler.HandleLogin, http.MethodPost, "/api/v1/auth/login",
		testutil.WithBody(string(body)),
		testutil.WithHeader("Content-Type", "application/json"),
	)

	// Assert response
	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusOK)

	// Check response structure
	userValue := resp.AssertJSONContainsKey(t, "user")
	userMap, ok := userValue.(map[string]any)
	require.True(t, ok)
	require.Equal(t, "admin@example.com", userMap["email"])
	require.Equal(t, "admin", userMap["role"])
}

func TestHandleGetCurrentUser_ReturnsRole(t *testing.T) {
	ctx := context.Background()
	deps := testutil.GetTestConfigurationAndDependencies(t, ctx)

	// Initialize domains
	deps.Dependencies.Domains().SetLinks(archivalDomain.NewLinkDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetArchives(archivalDomain.NewArchiveDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetCategories(archivalDomain.NewCategoryDomain(deps.Dependencies))
	deps.Dependencies.Domains().SetAuth(authDomain.NewAuthDomain(deps.Dependencies))

	// Create a test admin user and get token
	user, token, err := testutil.NewTestAdminUser(t, deps.Dependencies, "admin@example.com", "adminpassword123")
	require.NoError(t, err)

	// Create auth handler
	authHandler := NewAuthHandler(deps.Dependencies)

	// Create handlers with new middleware pattern
	globalAuthMiddleware := middleware.AuthMiddleware(deps.Dependencies.GetJWTService(), deps.Dependencies.UserStore)
	requireAuthMiddleware := middleware.RequireAuthMiddleware()
	handler := globalAuthMiddleware(requireAuthMiddleware(http.HandlerFunc(authHandler.HandleGetCurrentUser)))

	// Perform authenticated request
	w := testutil.PerformRequestWithHandler(handler, http.MethodGet, "/api/v1/auth/me",
		testutil.WithAuthToken(token),
	)

	// Assert response
	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusOK)

	// Check response structure
	emailValue := resp.AssertJSONContainsKey(t, "email")
	require.Equal(t, user.Email, emailValue)
	// Verify admin role is returned
	roleValue := resp.AssertJSONContainsKey(t, "role")
	require.Equal(t, "admin", roleValue)
}