// app/modules/loyalty/static/shared/js/loyalty-program-form.js
// Shared mixin for loyalty program settings forms (admin, merchant, store).

/**
 * Factory that returns the shared Alpine.js properties and methods
 * for the loyalty program settings form.
 *
 * Each page spreads this into its own component and provides:
 *   - init(), loadData(), saveSettings(), deleteProgram()
 *   with the correct API paths and navigation.
 */
function createProgramFormMixin() {
    return {
        // ---- state ----
        settings: {
            loyalty_type: 'points',
            stamps_target: 10,
            stamps_reward_description: '',
            stamps_reward_value_cents: null,
            points_per_euro: 1,
            welcome_bonus_points: 0,
            minimum_redemption_points: 100,
            minimum_purchase_cents: 0,
            points_expiration_days: null,
            points_rewards: [],
            cooldown_minutes: 15,
            max_daily_stamps: 5,
            require_staff_pin: true,
            card_name: '',
            card_color: '#4F46E5',
            card_secondary_color: '',
            logo_url: '',
            hero_image_url: '',
            terms_text: '',
            privacy_url: '',
            is_active: true,
        },

        isNewProgram: false,
        saving: false,
        deleting: false,
        showDeleteModal: false,

        // ---- helpers ----

        /**
         * Populate settings from an API program response object.
         */
        populateSettings(program) {
            this.settings = {
                loyalty_type: program.loyalty_type || 'points',
                stamps_target: program.stamps_target || 10,
                stamps_reward_description: program.stamps_reward_description || '',
                stamps_reward_value_cents: program.stamps_reward_value_cents || null,
                points_per_euro: program.points_per_euro || 1,
                welcome_bonus_points: program.welcome_bonus_points || 0,
                minimum_redemption_points: program.minimum_redemption_points || 100,
                minimum_purchase_cents: program.minimum_purchase_cents || 0,
                points_expiration_days: program.points_expiration_days || null,
                points_rewards: (program.points_rewards || []).map(r => ({
                    id: r.id,
                    name: r.name,
                    points_required: r.points_required,
                    description: r.description || '',
                    is_active: r.is_active !== false,
                })),
                cooldown_minutes: program.cooldown_minutes ?? 15,
                max_daily_stamps: program.max_daily_stamps || 5,
                require_staff_pin: program.require_staff_pin !== false,
                card_name: program.card_name || '',
                card_color: program.card_color || '#4F46E5',
                card_secondary_color: program.card_secondary_color || '',
                logo_url: program.logo_url || '',
                hero_image_url: program.hero_image_url || '',
                terms_text: program.terms_text || '',
                privacy_url: program.privacy_url || '',
                is_active: program.is_active !== false,
            };
        },

        /**
         * Build a clean payload from settings for POST/PATCH/PUT.
         * Ensures rewards have IDs and cleans empty optional fields.
         */
        buildPayload() {
            const payload = { ...this.settings };

            // Ensure rewards have IDs
            payload.points_rewards = (payload.points_rewards || []).map((r, i) => ({
                ...r,
                id: r.id || `reward_${i + 1}`,
                is_active: r.is_active !== false,
            }));

            // Clean empty optional fields
            if (!payload.stamps_reward_value_cents) payload.stamps_reward_value_cents = null;
            if (!payload.points_expiration_days) payload.points_expiration_days = null;
            if (!payload.minimum_purchase_cents) payload.minimum_purchase_cents = null;
            if (!payload.card_name) payload.card_name = null;
            if (!payload.card_secondary_color) payload.card_secondary_color = null;
            if (!payload.logo_url) {
                this.error = 'Logo URL is required for wallet integration.';
                return null;
            }
            if (!payload.hero_image_url) payload.hero_image_url = null;
            if (!payload.terms_text) payload.terms_text = null;
            if (!payload.privacy_url) payload.privacy_url = null;

            return payload;
        },

        addReward() {
            this.settings.points_rewards.push({
                id: `reward_${Date.now()}`,
                name: '',
                points_required: 100,
                description: '',
                is_active: true,
            });
        },

        removeReward(index) {
            this.settings.points_rewards.splice(index, 1);
        },

        confirmDelete() {
            this.showDeleteModal = true;
        },
    };
}