package handlers

import (
	"context"
	"encoding/json"
	"log/slog"
	"net/http"
	"os"
	"testing"

	"git.nakama.town/fmartingr/hako/internal/archival/archiver"
	archivalDomain "git.nakama.town/fmartingr/hako/internal/archival/domain"
	archivalStore "git.nakama.town/fmartingr/hako/internal/archival/store"
	authDomain "git.nakama.town/fmartingr/hako/internal/auth/domain"
	"git.nakama.town/fmartingr/hako/internal/database"
	"git.nakama.town/fmartingr/hako/internal/extractors"
	"git.nakama.town/fmartingr/hako/internal/model"
	"git.nakama.town/fmartingr/hako/internal/server/middleware"
	"git.nakama.town/fmartingr/hako/internal/testutil"
	"github.com/stretchr/testify/require"
)

func TestHandleSystem_NotLoggedIn(t *testing.T) {
	// Create temporary database for extractor config store
	tmpDB, err := os.CreateTemp("", "hako_test_*.db")
	require.NoError(t, err)
	defer func() {
		_ = tmpDB.Close()
		_ = os.Remove(tmpDB.Name())
		_ = os.Remove(tmpDB.Name() + "-wal")
		_ = os.Remove(tmpDB.Name() + "-shm")
	}()

	dbURL := "sqlite:" + tmpDB.Name()
	dbConnections, err := database.NewConnections(dbURL, dbURL)
	require.NoError(t, err)
	defer func() {
		_ = dbConnections.Close()
	}()

	// Run migrations
	err = database.InitSchema(dbConnections)
	require.NoError(t, err)

	// Create extractor manager
	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelError}))
	extractorMgr := extractors.NewManager(logger)

	// Create archiver manager
	archiverMgr := archiver.NewManager()

	// Create archiver config store
	archiverConfigStore := archivalStore.NewArchiverConfigStore(dbConnections.Read, dbConnections.Write)

	// Create settings store
	settingsStore := archivalStore.NewSettingsStore(dbConnections.Read, dbConnections.Write)

	// Create system handler
	systemHandler := NewSystemHandler(func(ctx context.Context) (string, error) {
		return model.BuildVersion, nil
	}, extractorMgr, archiverMgr, archiverConfigStore, settingsStore)

	// Perform request without authentication
	w := testutil.PerformRequest(systemHandler.HandleSystem, http.MethodGet, "/system")

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

	// Check JSON structure contains version, commit, and date
	var jsonData map[string]any
	err = json.Unmarshal(resp.GetBody(), &jsonData)
	require.NoError(t, err, "Response should be valid JSON")

	// Check that version, commit, and date keys exist
	versionValue, ok := jsonData["version"]
	require.True(t, ok, "Response should contain 'version' key")
	require.NotEmpty(t, versionValue, "Version should not be empty")

	commitValue, ok := jsonData["commit"]
	require.True(t, ok, "Response should contain 'commit' key")

	dateValue, ok := jsonData["date"]
	require.True(t, ok, "Response should contain 'date' key")

	// Verify it's the hako application version (defaults to "dev" in tests)
	require.Equal(t, model.BuildVersion, versionValue)
	require.Equal(t, model.BuildCommit, commitValue)
	require.Equal(t, model.BuildDate, dateValue)
}

func TestHandleSystem_LoggedIn(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
	_, token, err := testutil.NewTestUser(t, deps.Dependencies, "test@example.com", "testpassword123")
	require.NoError(t, err)

	// Create extractor manager
	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelError}))
	extractorMgr := extractors.NewManager(logger)

	// Create archiver manager
	archiverMgr := archiver.NewManager()

	// Create archiver config store using database connections from deps
	archiverConfigStore := archivalStore.NewArchiverConfigStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create settings store
	settingsStore := archivalStore.NewSettingsStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create system handler
	systemHandler := NewSystemHandler(func(ctx context.Context) (string, error) {
		return model.BuildVersion, nil
	}, extractorMgr, archiverMgr, archiverConfigStore, settingsStore)

	// Create handler with global auth middleware (sets context if token is present)
	globalAuthMiddleware := middleware.AuthMiddleware(deps.Dependencies.GetJWTService(), deps.Dependencies.UserStore)
	handler := globalAuthMiddleware(http.HandlerFunc(systemHandler.HandleSystem))

	// Perform authenticated request
	w := testutil.PerformRequestWithHandler(handler, http.MethodGet, "/system",
		testutil.WithAuthToken(token),
	)

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

	// Check JSON structure contains version, commit, and date
	var jsonData map[string]any
	err = json.Unmarshal(resp.GetBody(), &jsonData)
	require.NoError(t, err, "Response should be valid JSON")

	// Check that version, commit, and date keys exist
	versionValue, ok := jsonData["version"]
	require.True(t, ok, "Response should contain 'version' key when logged in")
	require.NotEmpty(t, versionValue, "Version should not be empty")

	commitValue, ok := jsonData["commit"]
	require.True(t, ok, "Response should contain 'commit' key when logged in")

	dateValue, ok := jsonData["date"]
	require.True(t, ok, "Response should contain 'date' key when logged in")

	// Verify it's the hako application version (defaults to "dev" in tests)
	require.Equal(t, model.BuildVersion, versionValue)
	require.Equal(t, model.BuildCommit, commitValue)
	require.Equal(t, model.BuildDate, dateValue)
}

func TestHandleGetRulesConfig(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
	_, token, err := testutil.NewTestUser(t, deps.Dependencies, "test@example.com", "testpassword123")
	require.NoError(t, err)

	// Create extractor manager
	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelError}))
	extractorMgr := extractors.NewManager(logger)

	// Create archiver manager
	archiverMgr := archiver.NewManager()

	// Create archiver config store
	archiverConfigStore := archivalStore.NewArchiverConfigStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create settings store
	settingsStore := archivalStore.NewSettingsStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create system handler
	systemHandler := NewSystemHandler(func(ctx context.Context) (string, error) {
		return model.BuildVersion, nil
	}, extractorMgr, archiverMgr, archiverConfigStore, settingsStore)

	// Create handler with global auth middleware
	globalAuthMiddleware := middleware.AuthMiddleware(deps.Dependencies.GetJWTService(), deps.Dependencies.UserStore)
	handler := globalAuthMiddleware(http.HandlerFunc(systemHandler.HandleGetRulesConfig))

	// Perform authenticated request
	w := testutil.PerformRequestWithHandler(handler, http.MethodGet, "/system/rules/config",
		testutil.WithAuthToken(token),
	)

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

	// Check JSON structure
	var jsonData map[string]any
	err = json.Unmarshal(resp.GetBody(), &jsonData)
	require.NoError(t, err, "Response should be valid JSON")

	// Check that rules and default_extractors keys exist
	_, ok := jsonData["rules"]
	require.True(t, ok, "Response should contain 'rules' key")
	_, ok = jsonData["default_extractors"]
	require.True(t, ok, "Response should contain 'default_extractors' key")
}

func TestHandleSaveRulesConfig(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
	_, token, err := testutil.NewTestUser(t, deps.Dependencies, "test@example.com", "testpassword123")
	require.NoError(t, err)

	// Create extractor manager
	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelError}))
	extractorMgr := extractors.NewManager(logger)

	// Create archiver manager
	archiverMgr := archiver.NewManager()

	// Create archiver config store
	archiverConfigStore := archivalStore.NewArchiverConfigStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create settings store
	settingsStore := archivalStore.NewSettingsStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create system handler
	systemHandler := NewSystemHandler(func(ctx context.Context) (string, error) {
		return model.BuildVersion, nil
	}, extractorMgr, archiverMgr, archiverConfigStore, settingsStore)

	// Create handler with global auth middleware
	globalAuthMiddleware := middleware.AuthMiddleware(deps.Dependencies.GetJWTService(), deps.Dependencies.UserStore)
	handler := globalAuthMiddleware(http.HandlerFunc(systemHandler.HandleSaveRulesConfig))

	// Valid rules config
	validRulesConfig := `{
		"rules": [
			{
				"mimetype": "text/html",
				"extractors": [{"key": "obelisk"}]
			}
		],
		"default_extractors": [{"key": "obelisk"}, {"key": "thumbnail"}]
	}`

	// Perform authenticated request to save rules
	w := testutil.PerformRequestWithHandler(handler, http.MethodPut, "/system/rules/config",
		testutil.WithAuthToken(token),
		testutil.WithBody(validRulesConfig),
		testutil.WithHeader("Content-Type", "application/json"),
	)

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

	// Check response message
	var responseData map[string]string
	err = json.Unmarshal(resp.GetBody(), &responseData)
	require.NoError(t, err, "Response should be valid JSON")
	require.Equal(t, "Rules config saved successfully", responseData["message"])

	// Verify rules were saved by getting them back
	getHandler := globalAuthMiddleware(http.HandlerFunc(systemHandler.HandleGetRulesConfig))
	w = testutil.PerformRequestWithHandler(getHandler, http.MethodGet, "/system/rules/config",
		testutil.WithAuthToken(token),
	)

	resp = testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusOK)

	var savedConfig map[string]any
	err = json.Unmarshal(resp.GetBody(), &savedConfig)
	require.NoError(t, err)

	// Verify rules were saved
	rules, ok := savedConfig["rules"].([]any)
	require.True(t, ok, "Rules should be an array")
	require.Len(t, rules, 1, "Should have one rule")
}

func TestHandleSaveRulesConfig_InvalidJSON(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
	_, token, err := testutil.NewTestUser(t, deps.Dependencies, "test@example.com", "testpassword123")
	require.NoError(t, err)

	// Create extractor manager
	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelError}))
	extractorMgr := extractors.NewManager(logger)

	// Create archiver manager
	archiverMgr := archiver.NewManager()

	// Create archiver config store
	archiverConfigStore := archivalStore.NewArchiverConfigStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create settings store
	settingsStore := archivalStore.NewSettingsStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create system handler
	systemHandler := NewSystemHandler(func(ctx context.Context) (string, error) {
		return model.BuildVersion, nil
	}, extractorMgr, archiverMgr, archiverConfigStore, settingsStore)

	// Create handler with global auth middleware
	globalAuthMiddleware := middleware.AuthMiddleware(deps.Dependencies.GetJWTService(), deps.Dependencies.UserStore)
	handler := globalAuthMiddleware(http.HandlerFunc(systemHandler.HandleSaveRulesConfig))

	// Invalid JSON
	invalidJSON := `{invalid json}`

	// Perform authenticated request
	w := testutil.PerformRequestWithHandler(handler, http.MethodPut, "/system/rules/config",
		testutil.WithAuthToken(token),
		testutil.WithBody(invalidJSON),
		testutil.WithHeader("Content-Type", "application/json"),
	)

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

func TestHandleSaveRulesConfig_InvalidRuleStructure(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
	_, token, err := testutil.NewTestUser(t, deps.Dependencies, "test@example.com", "testpassword123")
	require.NoError(t, err)

	// Create extractor manager
	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelError}))
	extractorMgr := extractors.NewManager(logger)

	// Create archiver manager
	archiverMgr := archiver.NewManager()

	// Create archiver config store
	archiverConfigStore := archivalStore.NewArchiverConfigStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create settings store
	settingsStore := archivalStore.NewSettingsStore(deps.DBConnections.Read, deps.DBConnections.Write)

	// Create system handler
	systemHandler := NewSystemHandler(func(ctx context.Context) (string, error) {
		return model.BuildVersion, nil
	}, extractorMgr, archiverMgr, archiverConfigStore, settingsStore)

	// Create handler with global auth middleware
	globalAuthMiddleware := middleware.AuthMiddleware(deps.Dependencies.GetJWTService(), deps.Dependencies.UserStore)
	handler := globalAuthMiddleware(http.HandlerFunc(systemHandler.HandleSaveRulesConfig))

	// Valid JSON but invalid rule structure (missing required fields)
	invalidRuleConfig := `{
		"rules": [
			{
				"mimetype": ""
			}
		],
		"default_extractors": []
	}`

	// Perform authenticated request
	w := testutil.PerformRequestWithHandler(handler, http.MethodPut, "/system/rules/config",
		testutil.WithAuthToken(token),
		testutil.WithBody(invalidRuleConfig),
		testutil.WithHeader("Content-Type", "application/json"),
	)

	// Assert response - should fail validation
	resp := testutil.NewTestResponse(w)
	resp.AssertStatus(t, http.StatusBadRequest)
}