// Campaign Page Management Module
class CampaignPage {
    constructor() {
        this.campaign = null;
        this.representatives = [];
        this.userInfo = {};
        this.currentStep = 1;
        this.init();
    }

    init() {
        // Get campaign slug from URL
        const pathParts = window.location.pathname.split('/');
        this.campaignSlug = pathParts[pathParts.length - 1];

        // Set up form handlers
        document.getElementById('user-info-form').addEventListener('submit', (e) => {
            this.handleUserInfoSubmit(e);
        });

        // Postal code formatting
        document.getElementById('user-postal-code').addEventListener('input', (e) => {
            this.formatPostalCode(e);
        });

        // Load campaign data
        this.loadCampaign();
    }

    async loadCampaign() {
        this.showLoading('Loading campaign...');
        
        try {
            const response = await fetch(`/api/campaigns/${this.campaignSlug}`);
            const data = await response.json();

            if (!data.success) {
                throw new Error(data.error || 'Failed to load campaign');
            }

            this.campaign = data.campaign;
            this.renderCampaign();
        } catch (error) {
            this.showError('Failed to load campaign: ' + error.message);
        } finally {
            this.hideLoading();
        }
    }

    renderCampaign() {
        // Update page title and header
        document.title = `${this.campaign.title} - Alberta Influence Tool`;
        document.getElementById('page-title').textContent = `${this.campaign.title} - Alberta Influence Tool`;
        document.getElementById('campaign-title').textContent = this.campaign.title;
        document.getElementById('campaign-description').textContent = this.campaign.description;

        // Show email count if enabled
        if (this.campaign.show_email_count && this.campaign.emailCount !== null) {
            document.getElementById('email-count').textContent = this.campaign.emailCount;
            document.getElementById('campaign-stats').style.display = 'block';
        }

        // Show call to action
        if (this.campaign.call_to_action) {
            document.getElementById('call-to-action').innerHTML = `<p><strong>${this.campaign.call_to_action}</strong></p>`;
            document.getElementById('call-to-action').style.display = 'block';
        }

        // Show email preview
        document.getElementById('preview-subject').textContent = this.campaign.email_subject;
        document.getElementById('preview-body').textContent = this.campaign.email_body;
        document.getElementById('email-preview').style.display = 'block';

        // Set up email method options
        this.setupEmailMethodOptions();

        // Set initial step
        this.setStep(1);
    }

    setupEmailMethodOptions() {
        const emailMethodSection = document.getElementById('email-method-selection');
        const allowSMTP = this.campaign.allow_smtp_email;
        const allowMailto = this.campaign.allow_mailto_link;

        if (!emailMethodSection) {
            console.warn('Email method selection element not found');
            return;
        }

        // Configure existing radio buttons instead of replacing HTML
        const smtpRadio = document.getElementById('method-smtp');
        const mailtoRadio = document.getElementById('method-mailto');
        
        if (allowSMTP && allowMailto) {
            // Both methods allowed - keep default setup
            smtpRadio.disabled = false;
            mailtoRadio.disabled = false;
            smtpRadio.checked = true;
        } else if (allowSMTP && !allowMailto) {
            // Only SMTP allowed
            smtpRadio.disabled = false;
            mailtoRadio.disabled = true;
            smtpRadio.checked = true;
        } else if (!allowSMTP && allowMailto) {
            // Only mailto allowed
            smtpRadio.disabled = true;
            mailtoRadio.disabled = false;
            mailtoRadio.checked = true;
        } else {
            // Neither allowed - hide the section
            emailMethodSection.style.display = 'none';
        }
    }

    formatPostalCode(e) {
        let value = e.target.value.replace(/\s/g, '').toUpperCase();
        if (value.length > 3) {
            value = value.substring(0, 3) + ' ' + value.substring(3, 6);
        }
        e.target.value = value;
    }

    async handleUserInfoSubmit(e) {
        e.preventDefault();
        
        const formData = new FormData(e.target);
        this.userInfo = {
            postalCode: formData.get('postalCode').replace(/\s/g, '').toUpperCase(),
            userName: formData.get('userName') || '',
            userEmail: formData.get('userEmail') || ''
        };

        await this.loadRepresentatives();
    }

    async loadRepresentatives() {
        this.showLoading('Finding your representatives...');
        
        try {
            const response = await fetch(`/api/campaigns/${this.campaignSlug}/representatives/${this.userInfo.postalCode}`);
            const data = await response.json();

            if (!data.success) {
                throw new Error(data.error || 'Failed to load representatives');
            }

            this.representatives = data.representatives;
            this.renderRepresentatives();
            this.setStep(2);
            
            // Scroll to representatives section
            document.getElementById('representatives-section').scrollIntoView({
                behavior: 'smooth'
            });
        } catch (error) {
            this.showError('Failed to load representatives: ' + error.message);
        } finally {
            this.hideLoading();
        }
    }

    renderRepresentatives() {
        const list = document.getElementById('representatives-list');
        
        if (this.representatives.length === 0) {
            list.innerHTML = '<p>No representatives found for your area. Please check your postal code.</p>';
            return;
        }

        list.innerHTML = this.representatives.map(rep => `
            <div class="rep-card">
                <div class="rep-info">
                    ${rep.photo_url ? 
                        `<img src="${rep.photo_url}" alt="${rep.name}" class="rep-photo">` :
                        `<div class="rep-photo"></div>`
                    }
                    <div class="rep-details">
                        <h4>${rep.name}</h4>
                        <p>${rep.elected_office || 'Representative'}</p>
                        <p>${rep.party_name || ''}</p>
                        ${rep.email ? `<p>📧 ${rep.email}</p>` : ''}
                    </div>
                </div>
                ${rep.email ? `
                    <div class="rep-actions">
                        <button class="btn btn-primary" data-action="send-email" 
                                data-email="${rep.email}" 
                                data-name="${rep.name}" 
                                data-title="${rep.elected_office || ''}" 
                                data-level="${this.getGovernmentLevel(rep)}">
                            Send Email
                        </button>
                    </div>
                ` : '<p style="text-align: center; color: #6c757d;">No email available</p>'}
            </div>
        `).join('');

        // Attach event listeners to send email buttons
        this.attachEmailButtonListeners();

        document.getElementById('representatives-section').style.display = 'block';
    }

    attachEmailButtonListeners() {
        // Send email buttons
        document.querySelectorAll('[data-action="send-email"]').forEach(btn => {
            btn.addEventListener('click', (e) => {
                const email = e.target.dataset.email;
                const name = e.target.dataset.name;
                const title = e.target.dataset.title;
                const level = e.target.dataset.level;
                this.sendEmail(email, name, title, level);
            });
        });

        // Reload page button
        const reloadBtn = document.querySelector('[data-action="reload-page"]');
        if (reloadBtn) {
            reloadBtn.addEventListener('click', () => {
                location.reload();
            });
        }
    }

    getGovernmentLevel(rep) {
        const office = (rep.elected_office || '').toLowerCase();
        if (office.includes('mp') || office.includes('member of parliament')) return 'Federal';
        if (office.includes('mla') || office.includes('legislative assembly')) return 'Provincial';
        if (office.includes('mayor') || office.includes('councillor')) return 'Municipal';
        if (office.includes('school')) return 'School Board';
        return 'Other';
    }

    async sendEmail(recipientEmail, recipientName, recipientTitle, recipientLevel) {
        const emailMethod = document.querySelector('input[name="emailMethod"]:checked').value;
        
        if (emailMethod === 'mailto') {
            this.openMailtoLink(recipientEmail);
        } else {
            await this.sendSMTPEmail(recipientEmail, recipientName, recipientTitle, recipientLevel);
        }
    }

    openMailtoLink(recipientEmail) {
        const subject = encodeURIComponent(this.campaign.email_subject);
        const body = encodeURIComponent(this.campaign.email_body);
        const mailtoUrl = `mailto:${recipientEmail}?subject=${subject}&body=${body}`;
        
        // Track the mailto click
        this.trackEmail(recipientEmail, '', '', '', 'mailto');
        
        window.open(mailtoUrl);
    }

    async sendSMTPEmail(recipientEmail, recipientName, recipientTitle, recipientLevel) {
        this.showLoading('Sending email...');
        
        try {
            const response = await fetch(`/api/campaigns/${this.campaignSlug}/send-email`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({
                    userEmail: this.userInfo.userEmail,
                    userName: this.userInfo.userName,
                    postalCode: this.userInfo.postalCode,
                    recipientEmail,
                    recipientName,
                    recipientTitle,
                    recipientLevel,
                    emailMethod: 'smtp'
                })
            });

            const data = await response.json();
            
            if (data.success) {
                this.showSuccess('Email sent successfully!');
            } else {
                throw new Error(data.error || 'Failed to send email');
            }
        } catch (error) {
            this.showError('Failed to send email: ' + error.message);
        } finally {
            this.hideLoading();
        }
    }

    async trackEmail(recipientEmail, recipientName, recipientTitle, recipientLevel, emailMethod) {
        try {
            await fetch(`/api/campaigns/${this.campaignSlug}/send-email`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({
                    userEmail: this.userInfo.userEmail,
                    userName: this.userInfo.userName,
                    postalCode: this.userInfo.postalCode,
                    recipientEmail,
                    recipientName,
                    recipientTitle,
                    recipientLevel,
                    emailMethod
                })
            });
        } catch (error) {
            console.error('Failed to track email:', error);
        }
    }

    setStep(step) {
        // Reset all steps
        document.querySelectorAll('.step').forEach(s => {
            s.classList.remove('active', 'completed');
        });

        // Mark completed steps
        for (let i = 1; i < step; i++) {
            document.getElementById(`step-${this.getStepName(i)}`).classList.add('completed');
        }

        // Mark current step
        document.getElementById(`step-${this.getStepName(step)}`).classList.add('active');
        
        this.currentStep = step;
    }

    getStepName(step) {
        const steps = ['', 'info', 'postal', 'send'];
        return steps[step] || 'info';
    }

    showLoading(message) {
        document.getElementById('loading-message').textContent = message;
        document.getElementById('loading-overlay').style.display = 'flex';
    }

    hideLoading() {
        document.getElementById('loading-overlay').style.display = 'none';
    }

    showError(message) {
        const errorDiv = document.getElementById('error-message');
        errorDiv.textContent = message;
        errorDiv.style.display = 'block';
        
        setTimeout(() => {
            errorDiv.style.display = 'none';
        }, 5000);
    }

    showSuccess(message) {
        // Update email count if enabled
        if (this.campaign.show_email_count) {
            const countElement = document.getElementById('email-count');
            const currentCount = parseInt(countElement.textContent) || 0;
            countElement.textContent = currentCount + 1;
        }

        // You could show a toast or update UI to indicate success
        alert(message); // Simple for now, could be improved with better UI
    }
}

// Initialize the campaign page when DOM is loaded
document.addEventListener('DOMContentLoaded', () => {
    window.campaignPage = new CampaignPage();
});