/**
 * Store Email Templates Management Page
 *
 * Allows stores to customize email templates sent to their customers.
 * Platform-only templates (billing, subscription) cannot be overridden.
 */

const storeEmailTemplatesLog = window.LogConfig?.loggers?.storeEmailTemplates ||
    window.LogConfig?.createLogger?.('storeEmailTemplates', false) ||
    { info: () => {}, debug: () => {}, warn: () => {}, error: () => {} };

storeEmailTemplatesLog.info('Loading...');

function storeEmailTemplates() {
    storeEmailTemplatesLog.info('storeEmailTemplates() called');

    return {
        // Inherit base layout state
        ...data(),

        // Set page identifier
        currentPage: 'email-templates',

        // Loading states
        loading: true,
        error: '',
        saving: false,

        // Data
        templates: [],
        supportedLanguages: ['en', 'fr', 'de', 'lb'],

        // Edit Modal
        showEditModal: false,
        editingTemplate: null,
        editLanguage: 'en',
        loadingTemplate: false,
        templateSource: 'platform',
        editForm: {
            subject: '',
            body_html: '',
            body_text: ''
        },
        reverting: false,

        // Revert confirm state
        showRevertConfirm: false,

        // Preview Modal
        showPreviewModal: false,
        previewData: null,

        // Test Email Modal
        showTestEmailModal: false,
        testEmailAddress: '',
        sendingTest: false,

        // Lifecycle
        async init() {
            // Load i18n translations
            await I18n.loadModule('messaging');

            if (window._storeEmailTemplatesInitialized) return;
            window._storeEmailTemplatesInitialized = true;

            storeEmailTemplatesLog.info('Email templates init() called');

            // Call parent init to set storeCode and other base state
            const parentInit = data().init;
            if (parentInit) {
                await parentInit.call(this);
            }

            await this.loadData();
        },

        // Data Loading
        async loadData() {
            this.loading = true;
            this.error = '';

            try {
                const response = await apiClient.get('/store/email-templates');
                this.templates = response.templates || [];
                this.supportedLanguages = response.supported_languages || ['en', 'fr', 'de', 'lb'];
            } catch (error) {
                storeEmailTemplatesLog.error('Failed to load templates:', error);
                this.error = error.detail || 'Failed to load templates';
            } finally {
                this.loading = false;
            }
        },

        // Category styling
        getCategoryClass(category) {
            const classes = {
                'AUTH': 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400',
                'ORDERS': 'bg-green-100 text-green-700 dark:bg-green-900/30 dark:text-green-400',
                'BILLING': 'bg-orange-100 text-orange-700 dark:bg-orange-900/30 dark:text-orange-400',
                'SYSTEM': 'bg-purple-100 text-purple-700 dark:bg-purple-900/30 dark:text-purple-400',
                'MARKETING': 'bg-pink-100 text-pink-700 dark:bg-pink-900/30 dark:text-pink-400',
                'TEAM': 'bg-indigo-100 text-indigo-700 dark:bg-indigo-900/30 dark:text-indigo-400'
            };
            return classes[category] || 'bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300';
        },

        // Edit Template
        async editTemplate(template) {
            this.editingTemplate = template;
            this.editLanguage = 'en';
            this.showEditModal = true;
            await this.loadTemplateLanguage();
        },

        async loadTemplateLanguage() {
            if (!this.editingTemplate) return;

            this.loadingTemplate = true;

            try {
                const data = await apiClient.get(
                    `/store/email-templates/${this.editingTemplate.code}/${this.editLanguage}`
                );

                this.templateSource = data.source;
                this.editForm = {
                    subject: data.subject || '',
                    body_html: data.body_html || '',
                    body_text: data.body_text || ''
                };
            } catch (error) {
                if (error.status === 404) {
                    // No template for this language
                    this.templateSource = 'none';
                    this.editForm = {
                        subject: '',
                        body_html: '',
                        body_text: ''
                    };
                    Utils.showToast(`No template available for ${this.editLanguage.toUpperCase()}`, 'info');
                } else {
                    storeEmailTemplatesLog.error('Failed to load template:', error);
                    Utils.showToast(I18n.t('messaging.messages.failed_to_load_template'), 'error');
                }
            } finally {
                this.loadingTemplate = false;
            }
        },

        closeEditModal() {
            this.showEditModal = false;
            this.editingTemplate = null;
            this.editForm = {
                subject: '',
                body_html: '',
                body_text: ''
            };
        },

        async saveTemplate() {
            if (!this.editingTemplate) return;

            this.saving = true;

            try {
                await apiClient.put(
                    `/store/email-templates/${this.editingTemplate.code}/${this.editLanguage}`,
                    {
                        subject: this.editForm.subject,
                        body_html: this.editForm.body_html,
                        body_text: this.editForm.body_text || null
                    }
                );

                Utils.showToast(I18n.t('messaging.messages.template_saved_successfully'), 'success');
                this.templateSource = 'store_override';
                // Refresh list to show updated status
                await this.loadData();
            } catch (error) {
                storeEmailTemplatesLog.error('Failed to save template:', error);
                Utils.showToast(error.detail || 'Failed to save template', 'error');
            } finally {
                this.saving = false;
            }
        },

        async revertToDefault() {
            if (!this.editingTemplate) return;

            this.reverting = true;

            try {
                await apiClient.delete(
                    `/store/email-templates/${this.editingTemplate.code}/${this.editLanguage}`
                );

                Utils.showToast(I18n.t('messaging.messages.reverted_to_platform_default'), 'success');
                // Reload the template to show platform version
                await this.loadTemplateLanguage();
                // Refresh list
                await this.loadData();
            } catch (error) {
                storeEmailTemplatesLog.error('Failed to revert template:', error);
                Utils.showToast(error.detail || 'Failed to revert', 'error');
            } finally {
                this.reverting = false;
            }
        },

        // Preview
        async previewTemplate() {
            if (!this.editingTemplate) return;

            try {
                const data = await apiClient.post(
                    `/store/email-templates/${this.editingTemplate.code}/preview`,
                    {
                        language: this.editLanguage,
                        variables: {}
                    }
                );

                this.previewData = data;
                this.showPreviewModal = true;
            } catch (error) {
                storeEmailTemplatesLog.error('Failed to preview template:', error);
                Utils.showToast(I18n.t('messaging.messages.failed_to_load_preview'), 'error');
            }
        },

        // Test Email
        sendTestEmail() {
            this.showTestEmailModal = true;
        },

        async confirmSendTestEmail() {
            if (!this.testEmailAddress || !this.editingTemplate) return;

            this.sendingTest = true;

            try {
                const result = await apiClient.post(
                    `/store/email-templates/${this.editingTemplate.code}/test`,
                    {
                        to_email: this.testEmailAddress,
                        language: this.editLanguage,
                        variables: {}
                    }
                );

                if (result.success) {
                    Utils.showToast(`Test email sent to ${this.testEmailAddress}`, 'success');
                    this.showTestEmailModal = false;
                    this.testEmailAddress = '';
                } else {
                    Utils.showToast(result.message || 'Failed to send test email', 'error');
                }
            } catch (error) {
                storeEmailTemplatesLog.error('Failed to send test email:', error);
                Utils.showToast(I18n.t('messaging.messages.failed_to_send_test_email'), 'error');
            } finally {
                this.sendingTest = false;
            }
        }
    };
}