import Component from '@glimmer/component';
import { service } from '@ember/service';
import { action } from '@ember/object';
import { tracked } from '@glimmer/tracking';
import { on } from '@ember/modifier';
import { fn } from '@ember/helper';
import or from 'ember-truth-helpers/helpers/or';

export default class PlacesSidebar extends Component {
  @service storage;
  @tracked selectedPlace = null;

  constructor() {
    super(...arguments);
    // If a specific place was passed in (pre-selected by map), show it immediately
    if (this.args.initialPlace) {
      this.selectedPlace = this.args.initialPlace;
    }
  }

  @action
  selectPlace(place) {
    this.selectedPlace = place;
  }

  @action
  clearSelection() {
    this.selectedPlace = null;
    // If we were initialized with a single place (direct click), 
    // going "back" might mean closing or showing the list if available.
    // Logic: if we have a list (@places), go back to list.
    // If we only had one place (@initialPlace) and no list, maybe close?
    // For now, assuming @places is always passed if we want a list fallback.
    if (!this.args.places || this.args.places.length === 0) {
      this.args.onClose();
    }
  }

  @action
  async toggleSave(place) {
    if (!place) return;

    if (place.createdAt) {
      // It's a saved bookmark -> Delete it
      if (confirm(`Delete "${place.title}"?`)) {
        try {
          // We need geohash to delete. 
          // Existing bookmarks have it. 
          // If for some reason it's missing (shouldn't happen for saved items), we can't delete easily.
          if (place.id && place.geohash) {
            await this.storage.places.remove(place.id, place.geohash);
            console.log('Place deleted:', place.title);
            
            // Close sidebar after delete since the item is gone from "Saved" context
            // Or we could revert to "Save" state if we had the original POI data, 
            // but usually we just close or show "Nearby".
            if (this.args.onClose) {
              this.args.onClose();
            }
          } else {
             alert('Cannot delete: Missing ID or Geohash');
          }
        } catch (e) {
          console.error('Failed to delete:', e);
          alert('Failed to delete: ' + e.message);
        }
      }
    } else {
      // It's a fresh POI -> Save it
      
      // Map Overpass POI to our Place schema
      const placeData = {
        title: place.tags.name || place.tags['name:en'] || 'Untitled Place',
        lat: place.lat,
        lon: place.lon,
        tags: [], 
        url: place.tags.website,
        osmId: String(place.id),
        // We rely on the module to generate ID and Geohash
      };

      try {
        const savedPlace = await this.storage.places.store(placeData);
        console.log('Place saved:', placeData.title);
        
        // Update the selected place in the UI to be the saved bookmark 
        // (so the button turns to "Saved")
        // We can update the local tracked property if we are viewing a single item
        // or let the parent update. 
        // Ideally, we switch `this.selectedPlace` to the `savedPlace` returned by the store.
        this.selectedPlace = savedPlace;
        
        // Notify parent if needed (map will auto-update via events)
        if (this.args.onBookmarkSaved) {
            this.args.onBookmarkSaved();
        }
      } catch (error) {
        console.error('Failed to save place:', error);
        alert('Failed to save place: ' + error.message);
      }
    }
  }

  <template>
    <div class="sidebar">
      <div class="sidebar-header">
        {{#if this.selectedPlace}}
             <button type="button" class="back-btn" {{on "click" this.clearSelection}}>←</button>
             <h2>Details</h2>
        {{else}}
             <h2>Nearby Places</h2>
        {{/if}}
        <button type="button" class="close-btn" {{on "click" @onClose}}>×</button>
      </div>
      
      <div class="sidebar-content">
        {{#if this.selectedPlace}}
          <div class="place-details">
            <h3>{{or this.selectedPlace.title this.selectedPlace.tags.name this.selectedPlace.tags.name:en "Unnamed Place"}}</h3>
            <p class="place-meta">
              {{#if this.selectedPlace.tags.amenity}}
                {{or this.selectedPlace.tags.amenity this.selectedPlace.tags.shop this.selectedPlace.tags.tourism}}
              {{else}}
                 {{!-- If it is a bookmark, it might just have an array of tags or description --}}
                 {{this.selectedPlace.description}}
              {{/if}}
            </p>
            
            {{#if (or this.selectedPlace.url this.selectedPlace.tags.website)}}
              <p><a href={{or this.selectedPlace.url this.selectedPlace.tags.website}} target="_blank" rel="noopener noreferrer">Website</a></p>
            {{/if}}

            {{#if this.selectedPlace.tags.opening_hours}}
               <p><strong>Open:</strong> {{this.selectedPlace.tags.opening_hours}}</p>
            {{/if}}

            <div class="actions">
               <button type="button" class={{if this.selectedPlace.createdAt "btn-secondary" "btn-primary"}} {{on "click" (fn this.toggleSave this.selectedPlace)}}>
                 {{if this.selectedPlace.createdAt "Saved ✓" "Save"}}
               </button>
            </div>
            
            <div class="meta-info">
               {{#if (or this.selectedPlace.osmId this.selectedPlace.id)}}
                 <p><small>OSM ID: <a href="https://www.openstreetmap.org/{{if this.selectedPlace.type this.selectedPlace.type 'node'}}/{{or this.selectedPlace.osmId this.selectedPlace.id}}" target="_blank" rel="noopener noreferrer">{{or this.selectedPlace.osmId this.selectedPlace.id}}</a></small></p>
               {{/if}}
            </div>
          </div>
        {{else}}
          {{#if @places}}
            <ul class="places-list">
              {{#each @places as |place|}}
                <li>
                  <button type="button" class="place-item" {{on "click" (fn this.selectPlace place)}}>
                    <div class="place-name">{{or place.tags.name place.tags.name:en "Unnamed Place"}}</div>
                    <div class="place-type">{{or place.tags.amenity place.tags.shop place.tags.tourism "Point of Interest"}}</div>
                  </button>
                </li>
              {{/each}}
            </ul>
          {{else}}
            <p class="empty-state">No places found nearby.</p>
          {{/if}}
        {{/if}}
      </div>
    </div>
  </template>
}