// This controller is being used on:
// - trips/show
// - trips/edit
// - trips/new

import BaseController from "./base_controller"
import L from "leaflet"
import { createAllMapLayers } from "../maps/layers"
import { createPopupContent } from "../maps/popups"
import { showFlashMessage } from "../maps/helpers"
import { fetchAndDisplayPhotos } from "../maps/photos"

export default class extends BaseController {
  static targets = ["container", "startedAt", "endedAt"]
  static values = { }

  connect() {
    if (!this.hasContainerTarget) {
      return;
    }

    console.log("Trips controller connected")

    this.apiKey = this.containerTarget.dataset.api_key
    this.userSettings = JSON.parse(this.containerTarget.dataset.user_settings || '{}')
    this.timezone = this.containerTarget.dataset.timezone
    this.distanceUnit = this.userSettings.maps.distance_unit || "km"

    // Initialize map and layers
    this.initializeMap()

    // Add event listener for coordinates updates
    this.element.addEventListener('coordinates-updated', (event) => {
      this.updateMapWithCoordinates(event.detail.coordinates)
    })
  }

  // Move map initialization to separate method
  initializeMap() {
    // Initialize layer groups
    this.polylinesLayer = L.layerGroup()
    this.photoMarkers = L.layerGroup()

    // Set default center and zoom for world view
    const center = [20, 0]  // Roughly centers the world map
    const zoom = 2

    // Initialize map
    this.map = L.map(this.containerTarget).setView(center, zoom)

    // Add base map layer
    const selectedLayerName = this.userSettings.preferred_map_layer || "OpenStreetMap";
    const maps = this.baseMaps();
    const defaultLayer = maps[selectedLayerName] || Object.values(maps)[0];
    defaultLayer.addTo(this.map);

    // Add scale control to bottom right
    L.control.scale({
      position: 'bottomright',
      imperial: this.distanceUnit === 'mi',
      metric: this.distanceUnit === 'km',
      maxWidth: 120
    }).addTo(this.map)

    const overlayMaps = {
      "Route": this.polylinesLayer,
      "Photos": this.photoMarkers
    }

    // Add layer control
    L.control.layers(this.baseMaps(), overlayMaps).addTo(this.map)

    // Add event listener for layer changes
    this.map.on('overlayadd', (e) => {
      if (e.name !== 'Photos') return;

      const startedAt = this.element.dataset.started_at;
      const endedAt = this.element.dataset.ended_at;

      console.log('Dataset values:', {
        startedAt,
        endedAt,
        path: this.element.dataset.path
      });

      if ((!this.userSettings.immich_url || !this.userSettings.immich_api_key) && (!this.userSettings.photoprism_url || !this.userSettings.photoprism_api_key)) {
        showFlashMessage(
          'error',
          'Photos integration is not configured. Please check your integrations settings.'
        );
        return;
      }

      // Try to get dates from coordinates first, then fall back to path data
      let startDate, endDate;

      if (this.coordinates?.length) {
        const firstCoord = this.coordinates[0];
        const lastCoord = this.coordinates[this.coordinates.length - 1];
        startDate = new Date(firstCoord[4] * 1000).toISOString().split('T')[0];
        endDate = new Date(lastCoord[4] * 1000).toISOString().split('T')[0];
      } else if (startedAt && endedAt) {
        // Parse the dates and format them correctly
        startDate = new Date(startedAt).toISOString().split('T')[0];
        endDate = new Date(endedAt).toISOString().split('T')[0];
      } else {
        console.log('No date range available for photos');
        showFlashMessage(
          'error',
          'No date range available for photos. Please ensure the trip has start and end dates.'
        );
        return;
      }

      fetchAndDisplayPhotos({
        map: this.map,
        photoMarkers: this.photoMarkers,
        apiKey: this.apiKey,
        startDate: startDate,
        endDate: endDate,
        userSettings: this.userSettings
      });
    });

    // Add route (no markers on trip forms)
    if (this.coordinates?.length > 0) {
      this.addPolyline()
      this.fitMapToBounds()
    }

    // After map initialization, add the path if it exists
    if (this.containerTarget.dataset.path) {
      try {
        let coordinates;
        const pathData = this.containerTarget.dataset.path.replace(/^"|"$/g, ''); // Remove surrounding quotes

        // Try to parse as JSON first (new format)
        coordinates = JSON.parse(pathData);
        // Convert from [lng, lat] to [lat, lng] for Leaflet
        coordinates = coordinates.map(coord => [coord[1], coord[0]]);

        const polyline = L.polyline(coordinates, {
          color: 'blue',
          opacity: 0.8,
          weight: 3,
          zIndexOffset: 400
        });

        polyline.addTo(this.polylinesLayer);
        this.polylinesLayer.addTo(this.map);

        // Fit the map to the polyline bounds
        if (coordinates.length > 0) {
          this.map.fitBounds(polyline.getBounds(), { padding: [50, 50] });
        }
      } catch (error) {
        console.error("Error processing path data:", error);
      }
    }
  }

  disconnect() {
    if (this.map) {
      this.map.remove()
    }
  }

  baseMaps() {
    let selectedLayerName = this.userSettings.preferred_map_layer || "OpenStreetMap";
    let maps = createAllMapLayers(this.map, selectedLayerName, "false", 'dark');

    // Add custom map if it exists in settings
    if (this.userSettings.maps && this.userSettings.maps.url) {
      const customLayer = L.tileLayer(this.userSettings.maps.url, {
        maxZoom: 19,
        attribution: "© OpenStreetMap contributors"
      });

      // If this is the preferred layer, add it to the map immediately
      if (selectedLayerName === this.userSettings.maps.name) {
        customLayer.addTo(this.map);
        // Remove any other base layers that might be active
        Object.values(maps).forEach(layer => {
          if (this.map.hasLayer(layer)) {
            this.map.removeLayer(layer);
          }
        });
      }

      maps[this.userSettings.maps.name] = customLayer;
    }

    return maps;
  }

  addMarkers() {
    this.coordinates.forEach(coord => {
      const marker = L.circleMarker(
        [coord[0], coord[1]],
        {
          radius: 4,
          color: coord[5] < 0 ? "orange" : "blue",
          zIndexOffset: 1000
        }
      )

      const popupContent = createPopupContent(coord, this.timezone, this.distanceUnit)
      marker.bindPopup(popupContent)
      marker.addTo(this.polylinesLayer)
    })
  }

  addPolyline() {
    const points = this.coordinates.map(coord => [coord[0], coord[1]])
    const polyline = L.polyline(points, {
      color: 'blue',
      opacity: 0.8,
      weight: 3,
      zIndexOffset: 400
    })
    // Add to polylines layer instead of directly to map
    this.polylinesLayer.addTo(this.map)
    polyline.addTo(this.polylinesLayer)
  }

  fitMapToBounds() {
    const bounds = L.latLngBounds(
      this.coordinates.map(coord => [coord[0], coord[1]])
    )
    this.map.fitBounds(bounds, { padding: [50, 50] })
  }

  // Update coordinates and refresh the map
  updateMapWithCoordinates(newCoordinates) {
    // Transform the coordinates to match the expected format
    this.coordinates = newCoordinates.map(point => [
      parseFloat(point.latitude),
      parseFloat(point.longitude),
      point.id,
      null, // This is so we can use the same order and position of elements in the coordinates object as in the api/v1/points response
      (point.timestamp).toString()
    ]).sort((a, b) => a[4] - b[4]);

    // Clear existing layers
    this.polylinesLayer.clearLayers()
    this.photoMarkers.clearLayers()

    // Add only polyline (no markers) when coordinates exist
    if (this.coordinates?.length > 0) {
      this.addPolyline()
      this.fitMapToBounds()
    }
  }
}