{% extends "base.html" %}
{% block title %}Notification Preferences{% endblock %}

{% block content %}
<div class="row mb-3 align-items-center">
  <div class="col">
    <h4 class="mb-0">
      <i class="bi bi-gear-fill text-secondary me-2"></i>Notification Preferences
    </h4>
    <p class="text-muted mb-0 mt-1" style="font-size:.85rem;">
      Control how and when you receive notifications for each event type.
    </p>
  </div>
  <div class="col-auto">
    <a href="{{ url_for('notifications.index') }}" class="btn btn-outline-secondary btn-sm">
      <i class="bi bi-bell"></i> View Notifications
    </a>
  </div>
</div>

<form method="post">
  <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">

  <div class="card shadow-sm">
    <div class="card-header bg-light">
      <div class="row fw-semibold text-muted" style="font-size:.8rem;">
        <div class="col-md-4">Event</div>
        <div class="col-md-2 text-center">Email Alerts</div>
        <div class="col-md-2 text-center">Digest Mode</div>
        <div class="col-md-3 text-center">Digest Frequency</div>
        <div class="col-md-1"></div>
      </div>
    </div>

    <ul class="list-group list-group-flush">
      {% for event_type, label in event_types.items() %}
      {% set pref = prefs_map.get(event_type) %}
      {% set email_on  = pref.email_enabled    if pref else True %}
      {% set digest_on = pref.digest_mode      if pref else False %}
      {% set freq      = pref.digest_frequency if pref else 'daily' %}

      <li class="list-group-item px-3 py-3" id="row-{{ event_type }}">
        <div class="row align-items-center">

          {# Event label #}
          <div class="col-md-4">
            <span class="fw-semibold" style="font-size:.9rem;">{{ label }}</span>
          </div>

          {# Email toggle #}
          <div class="col-md-2 text-center">
            <div class="form-check form-switch d-inline-block">
              <input class="form-check-input email-toggle"
                     type="checkbox"
                     name="email_{{ event_type }}"
                     id="email_{{ event_type }}"
                     value="1"
                     data-event="{{ event_type }}"
                     {% if email_on %}checked{% endif %}>
              <label class="form-check-label visually-hidden"
                     for="email_{{ event_type }}">Email</label>
            </div>
          </div>

          {# Digest mode toggle #}
          <div class="col-md-2 text-center">
            <div class="form-check form-switch d-inline-block">
              <input class="form-check-input digest-toggle"
                     type="checkbox"
                     name="digest_{{ event_type }}"
                     id="digest_{{ event_type }}"
                     value="1"
                     data-event="{{ event_type }}"
                     {% if digest_on %}checked{% endif %}
                     {% if not email_on %}disabled{% endif %}>
              <label class="form-check-label visually-hidden"
                     for="digest_{{ event_type }}">Digest</label>
            </div>
          </div>

          {# Digest frequency #}
          <div class="col-md-3 text-center">
            <select class="form-select form-select-sm freq-select"
                    name="freq_{{ event_type }}"
                    id="freq_{{ event_type }}"
                    style="width:auto;margin:auto;"
                    {% if not email_on or not digest_on %}disabled{% endif %}>
              <option value="hourly" {% if freq == 'hourly' %}selected{% endif %}>Hourly</option>
              <option value="daily"  {% if freq == 'daily'  %}selected{% endif %}>Daily</option>
            </select>
          </div>

          {# Status label #}
          <div class="col-md-1 text-end">
            <span class="badge status-badge
                         {% if not email_on %}bg-secondary
                         {% elif digest_on %}bg-warning text-dark
                         {% else %}bg-success{% endif %}"
                  style="font-size:.65rem;"
                  id="badge-{{ event_type }}">
              {% if not email_on %}Off
              {% elif digest_on %}Digest
              {% else %}Live{% endif %}
            </span>
          </div>

        </div>
      </li>
      {% endfor %}
    </ul>
  </div>

  <div class="mt-3 d-flex gap-2">
    <button type="submit" class="btn btn-primary">
      <i class="bi bi-check2-circle me-1"></i>Save Preferences
    </button>
    <a href="{{ url_for('notifications.index') }}" class="btn btn-outline-secondary">
      Cancel
    </a>
  </div>
</form>

<div class="card mt-4 border-0 bg-light">
  <div class="card-body py-2 px-3">
    <p class="mb-1" style="font-size:.8rem;"><strong>Email Alerts:</strong>
      Send an immediate email every time this event occurs.</p>
    <p class="mb-1" style="font-size:.8rem;"><strong>Digest Mode:</strong>
      Hold notifications and deliver them in a single batched email on your chosen schedule.</p>
    <p class="mb-0" style="font-size:.8rem;"><strong>Off:</strong>
      In-app notifications still appear in the bell — only email is suppressed.</p>
  </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
(function () {
  'use strict';

  document.querySelectorAll('.email-toggle').forEach(function (emailChk) {
    emailChk.addEventListener('change', function () {
      var event      = this.dataset.event;
      var digestChk  = document.getElementById('digest_' + event);
      var freqSelect = document.getElementById('freq_'   + event);
      var badge      = document.getElementById('badge_'  + event) ||
                       document.getElementById('badge-'  + event);

      var emailOn  = this.checked;
      var digestOn = digestChk.checked;

      // Cascade: disabling email disables digest and frequency
      digestChk.disabled  = !emailOn;
      freqSelect.disabled = !emailOn || !digestOn;

      if (!emailOn) {
        digestChk.checked = false;
        digestOn = false;
      }

      updateBadge(badge, emailOn, digestOn);
    });
  });

  document.querySelectorAll('.digest-toggle').forEach(function (digestChk) {
    digestChk.addEventListener('change', function () {
      var event      = this.dataset.event;
      var freqSelect = document.getElementById('freq_'  + event);
      var badge      = document.getElementById('badge_' + event) ||
                       document.getElementById('badge-' + event);
      var emailChk   = document.getElementById('email_' + event);

      var emailOn  = emailChk.checked;
      var digestOn = this.checked;

      freqSelect.disabled = !emailOn || !digestOn;

      updateBadge(badge, emailOn, digestOn);
    });
  });

  function updateBadge(badge, emailOn, digestOn) {
    if (!badge) return;
    badge.className = badge.className
      .replace(/bg-\S+/g, '')
      .replace(/text-\S+/g, '')
      .trim();

    if (!emailOn) {
      badge.classList.add('bg-secondary');
      badge.textContent = 'Off';
    } else if (digestOn) {
      badge.classList.add('bg-warning', 'text-dark');
      badge.textContent = 'Digest';
    } else {
      badge.classList.add('bg-success');
      badge.textContent = 'Live';
    }
  }
})();
</script>
{% endblock %}