// static/js/admin/vendor-edit.js

function vendorEdit() {
    return {
        currentUser: {},
        vendor: {},
        formData: {},
        errors: {},
        loadingVendor: true,
        saving: false,
        vendorId: null,

        // Confirmation modal
        confirmModal: {
            show: false,
            title: '',
            message: '',
            warning: '',
            buttonText: '',
            buttonClass: 'btn-primary',
            onConfirm: () => {},
            onCancel: null
        },

        // Success modal
        successModal: {
            show: false,
            title: '',
            message: '',
            details: null,
            note: ''
        },

        // Transfer ownership
        showTransferOwnership: false,
        transferring: false,
        transferData: {
            new_owner_user_id: null,
            transfer_reason: '',
            confirm_transfer: false
        },

        init() {
            console.log('=== Vendor Edit Initialization ===');

            // Check authentication
            if (!Auth.isAuthenticated() || !Auth.isAdmin()) {
                console.log('Not authenticated as admin, redirecting to login');
                window.location.href = '/static/admin/login.html';
                return;
            }

            this.currentUser = Auth.getCurrentUser();
            console.log('Current user:', this.currentUser.username);

            // Get vendor ID from URL
            const urlParams = new URLSearchParams(window.location.search);
            this.vendorId = urlParams.get('id');

            if (!this.vendorId) {
                console.error('No vendor ID in URL');
                alert('No vendor ID provided');
                window.location.href = '/static/admin/dashboard.html#vendors';
                return;
            }

            console.log('Vendor ID:', this.vendorId);

            // Load vendor details
            this.loadVendor();
        },

        async loadVendor() {
            this.loadingVendor = true;
            try {
                console.log('Loading vendor with ID:', this.vendorId);
                this.vendor = await apiClient.get(`/admin/vendors/${this.vendorId}`);
                console.log('✅ Vendor loaded:', this.vendor.vendor_code);
                console.log('Owner email:', this.vendor.owner_email);
                console.log('Contact email:', this.vendor.contact_email);

                // Populate form data
                this.formData = {
                    name: this.vendor.name,
                    subdomain: this.vendor.subdomain,
                    description: this.vendor.description || '',
                    contact_email: this.vendor.contact_email || '',
                    contact_phone: this.vendor.contact_phone || '',
                    website: this.vendor.website || '',
                    business_address: this.vendor.business_address || '',
                    tax_number: this.vendor.tax_number || ''
                };

                console.log('Form data populated');
            } catch (error) {
                console.error('❌ Failed to load vendor:', error);
                Utils.showToast('Failed to load vendor details: ' + (error.message || 'Unknown error'), 'error');
                window.location.href = '/static/admin/dashboard.html#vendors';
            } finally {
                this.loadingVendor = false;
            }
        },

        formatSubdomain() {
            this.formData.subdomain = this.formData.subdomain
                .toLowerCase()
                .replace(/[^a-z0-9-]/g, '');
        },

        async handleSubmit() {
            console.log('Submitting vendor update...');
            this.errors = {};
            this.saving = true;

            try {
                const updatedVendor = await apiClient.put(
                    `/admin/vendors/${this.vendorId}`,
                    this.formData
                );

                console.log('✅ Vendor updated successfully');
                Utils.showToast('Vendor updated successfully!', 'success');
                this.vendor = updatedVendor;

                // Refresh form data with latest values
                this.formData.name = updatedVendor.name;
                this.formData.subdomain = updatedVendor.subdomain;
                this.formData.contact_email = updatedVendor.contact_email;
            } catch (error) {
                console.error('❌ Failed to update vendor:', error);
                Utils.showToast(error.message || 'Failed to update vendor', 'error');
            } finally {
                this.saving = false;
            }
        },

        showVerificationModal() {
            const action = this.vendor.is_verified ? 'unverify' : 'verify';
            const actionCap = this.vendor.is_verified ? 'Unverify' : 'Verify';

            this.confirmModal = {
                show: true,
                title: `${actionCap} Vendor`,
                message: `Are you sure you want to ${action} this vendor?`,
                warning: this.vendor.is_verified
                    ? 'Unverifying this vendor will prevent them from being publicly visible and may affect their operations.'
                    : 'Verifying this vendor will make them publicly visible and allow them to operate fully.',
                buttonText: actionCap,
                buttonClass: this.vendor.is_verified ? 'btn-warning' : 'btn-success',
                onConfirm: () => this.toggleVerification(),
                onCancel: null
            };
        },

        async toggleVerification() {
            const action = this.vendor.is_verified ? 'unverify' : 'verify';
            console.log(`Toggling verification: ${action}`);

            this.saving = true;
            try {
                const result = await apiClient.put(`/admin/vendors/${this.vendorId}/verify`);
                this.vendor.is_verified = result.vendor.is_verified;
                console.log('✅ Verification toggled');
                Utils.showToast(result.message, 'success');
            } catch (error) {
                console.error('❌ Failed to toggle verification:', error);
                Utils.showToast('Failed to update verification status', 'error');
            } finally {
                this.saving = false;
            }
        },

        showStatusModal() {
            const action = this.vendor.is_active ? 'deactivate' : 'activate';
            const actionCap = this.vendor.is_active ? 'Deactivate' : 'Activate';

            this.confirmModal = {
                show: true,
                title: `${actionCap} Vendor`,
                message: `Are you sure you want to ${action} this vendor?`,
                warning: this.vendor.is_active
                    ? 'Deactivating this vendor will immediately suspend all their operations and make them invisible to customers.'
                    : 'Activating this vendor will restore their operations and make them visible again.',
                buttonText: actionCap,
                buttonClass: this.vendor.is_active ? 'btn-danger' : 'btn-success',
                onConfirm: () => this.toggleStatus(),
                onCancel: null
            };
        },

        async toggleStatus() {
            const action = this.vendor.is_active ? 'deactivate' : 'activate';
            console.log(`Toggling status: ${action}`);

            this.saving = true;
            try {
                const result = await apiClient.put(`/admin/vendors/${this.vendorId}/status`);
                this.vendor.is_active = result.vendor.is_active;
                console.log('✅ Status toggled');
                Utils.showToast(result.message, 'success');
            } catch (error) {
                console.error('❌ Failed to toggle status:', error);
                Utils.showToast('Failed to update vendor status', 'error');
            } finally {
                this.saving = false;
            }
        },

        async handleTransferOwnership() {
            // Validate inputs
            if (!this.transferData.confirm_transfer) {
                Utils.showToast('Please confirm the ownership transfer', 'error');
                return;
            }

            if (!this.transferData.new_owner_user_id) {
                Utils.showToast('Please enter the new owner user ID', 'error');
                return;
            }

            // Close the transfer modal first
            this.showTransferOwnership = false;

            // Wait a moment for modal to close
            await new Promise(resolve => setTimeout(resolve, 300));

            // Show final confirmation modal
            this.confirmModal = {
                show: true,
                title: '⚠️ FINAL CONFIRMATION: Transfer Ownership',
                message: `You are about to transfer ownership of "${this.vendor.name}" to user ID ${this.transferData.new_owner_user_id}.`,
                warning: `Current Owner: ${this.vendor.owner_username} (${this.vendor.owner_email})\n\n` +
                         `This action will:\n` +
                         `• Assign full ownership rights to the new user\n` +
                         `• Demote the current owner to Manager role\n` +
                         `• Be permanently logged for audit purposes\n\n` +
                         `This action cannot be easily undone. Are you absolutely sure?`,
                buttonText: '🔄 Yes, Transfer Ownership',
                buttonClass: 'btn-danger',
                onConfirm: () => this.executeTransferOwnership(),
                onCancel: () => {
                    // If cancelled, reopen the transfer modal with preserved data
                    this.showTransferOwnership = true;
                }
            };
        },

        async executeTransferOwnership() {
    console.log('Transferring ownership to user:', this.transferData.new_owner_user_id);
    this.transferring = true;
    this.saving = true;

    try {
        const result = await apiClient.post(
            `/admin/vendors/${this.vendorId}/transfer-ownership`,
            this.transferData
        );

        console.log('✅ Ownership transferred successfully');

        // Show beautiful success modal
        this.successModal = {
            show: true,
            title: 'Ownership Transfer Complete',
            message: `The ownership of "${this.vendor.name}" has been successfully transferred.`,
            details: {
                oldOwner: {
                    username: result.old_owner.username,
                    email: result.old_owner.email
                },
                newOwner: {
                    username: result.new_owner.username,
                    email: result.new_owner.email
                }
            },
            note: 'The transfer has been logged for audit purposes. The previous owner has been assigned the Manager role.'
        };

        Utils.showToast('Ownership transferred successfully', 'success');

        // Reload vendor data to reflect new owner
        await this.loadVendor();

        // Reset transfer form data
        this.transferData = {
            new_owner_user_id: null,
            transfer_reason: '',
            confirm_transfer: false
        };
    } catch (error) {
        console.error('❌ Failed to transfer ownership:', error);
        const errorMsg = error.message || error.detail || 'Unknown error';
        Utils.showToast(`Transfer failed: ${errorMsg}`, 'error');

        // Show error in modal format (reuse success modal structure)
        alert(`❌ Transfer Failed\n\n${errorMsg}\n\nPlease check the user ID and try again.`);

        // Reopen transfer modal so user can try again
        this.showTransferOwnership = true;
    } finally {
        this.transferring = false;
        this.saving = false;
    }
},

    async handleLogout() {
    // Show confirmation modal for logout
    this.confirmModal = {
        show: true,
        title: '🚪 Confirm Logout',
        message: 'Are you sure you want to logout from the Admin Portal?',
        warning: 'You will need to login again to access the admin dashboard.',
        buttonText: 'Yes, Logout',
        buttonClass: 'btn-danger',
        onConfirm: () => this.executeLogout(),
        onCancel: null
    };
},

    async executeLogout() {
    console.log('Logging out...');

    // Show loading state briefly
    this.saving = true;

    // Clear authentication
    Auth.logout();

    // Show success message
    Utils.showToast('Logged out successfully', 'success', 1000);

    // Redirect to login after brief delay
    setTimeout(() => {
        window.location.href = '/static/admin/login.html';
    }, 500);
},
    };
}