Add DISTANCE_UNIT environment variable

.app_version

@@ -1 +1 @@
-0.12.2
+0.13.0

.env.development

@@ -5,3 +5,4 @@ DATABASE_NAME=dawarich_development
 DATABASE_PORT=5432
 REDIS_URL=redis://localhost:6379/1
 PHOTON_API_HOST='photon.komoot.io'
+DISTANCE_UNIT='mi'

CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.13.0] — 2024-08-28
+
+### Added
+
+- Support for miles. To switch to miles, provide `DISTANCE_UNIT` environment variable with value `mi` in the `docker-compose.yml` file. Default value is `km`.
+
+It's recommended to update your stats manually after changing the `DISTANCE_UNIT` environment variable. You can do this by clicking the "Update stats" button on the Stats page.
+
 ## [0.12.2] — 2024-08-28
 
 ### Added

app/controllers/map_controller.rb

@@ -35,7 +35,9 @@ class MapController < ApplicationController
     @distance ||= 0
 
     @coordinates.each_cons(2) do
-      @distance += Geocoder::Calculations.distance_between([_1[0], _1[1]], [_2[0], _2[1]], units: :km)
+      @distance += Geocoder::Calculations.distance_between(
+        [_1[0], _1[1]], [_2[0], _2[1]], units: DISTANCE_UNIT.to_sym
+      )
     end
 
     @distance.round(1)

app/helpers/application_helper.rb

@@ -50,7 +50,8 @@ module ApplicationHelper
     "#{countries} countries, #{cities} cities"
   end
 
-  def year_distance_stat_in_km(year, user)
+  def year_distance_stat(year, user)
+    # In km or miles, depending on the application settings (DISTANCE_UNIT)
     Stat.year_distance(year, user).sum { _1[1] }
   end
 
@@ -81,7 +82,7 @@ module ApplicationHelper
   def sidebar_distance(distance)
     return unless distance
 
-    "#{distance} km"
+    "#{distance} #{DISTANCE_UNIT}"
   end
 
   def sidebar_points(points)

app/models/user.rb

@@ -35,7 +35,8 @@ class User < ApplicationRecord
       .compact
   end
 
-  def total_km
+  def total_distance
+    # In km or miles, depending on the application settings (DISTANCE_UNIT)
     stats.sum(:distance)
   end
 

app/services/areas/visits/create.rb

@@ -30,10 +30,15 @@ class Areas::Visits::Create
   end
 
   def area_points(area)
-    area_radius_in_km = area.radius / 1000.0
+    area_radius =
+      if DISTANCE_UNIT.to_sym == :km
+        area.radius / 1000.0
+      else
+        area.radius / 1609.344
+      end
 
     points = Point.where(user_id: user.id)
-                  .near([area.latitude, area.longitude], area_radius_in_km)
+                  .near([area.latitude, area.longitude], area_radius, units: DISTANCE_UNIT.to_sym)
                   .order(timestamp: :asc)
 
     # check if all points within the area are assigned to a visit

app/services/create_stats.rb

@@ -50,15 +50,15 @@ class CreateStats
   end
 
   def distance(points)
-    km = 0
+    distance = 0
 
     points.each_cons(2) do
-      km += Geocoder::Calculations.distance_between(
+      distance += Geocoder::Calculations.distance_between(
-        [_1.latitude, _1.longitude], [_2.latitude, _2.longitude], units: :km
+        [_1.latitude, _1.longitude], [_2.latitude, _2.longitude], units: DISTANCE_UNIT.to_sym
       )
     end
 
-    km
+    distance
   end
 
   def toponyms(points)

app/views/map/index.html.erb

@@ -41,9 +41,10 @@
 
     <div
       class="w-full"
+      data-controller="maps"
+      data-distance_unit="<%= DISTANCE_UNIT %>"
       data-api_key="<%= current_user.api_key %>"
       data-user_settings=<%= current_user.settings.to_json %>
-      data-controller="maps"
       data-coordinates="<%= @coordinates %>"
       data-timezone="<%= Rails.configuration.time_zone %>">
       <div data-maps-target="container" class="h-[25rem] w-auto min-h-screen">

app/views/stats/_stat.html.erb

@@ -5,7 +5,7 @@
         <%= "#{Date::MONTHNAMES[stat.month]} of #{stat.year}" %>
       <% end %>
     </h2>
-    <p><%= stat.distance %>km</p>
+    <p><%= stat.distance %><%= DISTANCE_UNIT %></p>
     <% if REVERSE_GEOCODING_ENABLED %>
       <div class="card-actions justify-end">
         <%= countries_and_cities_stat_for_month(stat) %>
@@ -15,7 +15,7 @@
       <%= column_chart(
         stat.daily_distance,
         height: '100px',
-        suffix: ' km',
+        suffix: " #{DISTANCE_UNIT}",
         xtitle: 'Days',
         ytitle: 'Distance'
       ) %>

app/views/stats/_year.html.erb

@@ -6,7 +6,7 @@
   <%= column_chart(
     Stat.year_distance(year, current_user),
     height: '200px',
-    suffix: ' km',
+    suffix: " #{DISTANCE_UNIT}",
     xtitle: 'Days',
     ytitle: 'Distance'
   ) %>

app/views/stats/index.html.erb

@@ -4,7 +4,7 @@
   <div class="stats stats-vertical lg:stats-horizontal shadow w-full bg-base-200">
     <div class="stat text-center">
       <div class="stat-value text-primary">
-        <%= number_with_delimiter(current_user.total_km) %> km
+        <%= number_with_delimiter(current_user.total_distance) %> <%= DISTANCE_UNIT %>
       </div>
       <div class="stat-title">Total distance</div>
     </div>
@@ -32,8 +32,8 @@
             <%= link_to '[Map]', map_url(year_timespan(year)), class: 'underline hover:no-underline' %>
           </h2>
           <p>
-            <% cache [current_user, 'year_distance_stat_in_km', year], skip_digest: true do %>
+            <% cache [current_user, 'year_distance_stat', year], skip_digest: true do %>
-              <%= number_with_delimiter year_distance_stat_in_km(year, current_user) %>km
+              <%= number_with_delimiter year_distance_stat(year, current_user) %><%= DISTANCE_UNIT %>
             <% end %>
           </p>
           <% if REVERSE_GEOCODING_ENABLED %>
@@ -44,7 +44,7 @@
           <%= column_chart(
             Stat.year_distance(year, current_user),
             height: '200px',
-            suffix: ' km',
+            suffix: " #{DISTANCE_UNIT}",
             xtitle: 'Days',
             ytitle: 'Distance'
           ) %>

config/initializers/00_constants.rb

@@ -3,3 +3,4 @@
 MIN_MINUTES_SPENT_IN_CITY = ENV.fetch('MIN_MINUTES_SPENT_IN_CITY', 60).to_i
 REVERSE_GEOCODING_ENABLED = ENV.fetch('REVERSE_GEOCODING_ENABLED', 'true') == 'true'
 PHOTON_API_HOST = ENV.fetch('PHOTON_API_HOST', nil)
+DISTANCE_UNIT = ENV.fetch('DISTANCE_UNIT', 'km')

config/initializers/geocoder.rb

@@ -2,7 +2,7 @@
 
 settings = {
   timeout: 5,
-  units: :km,
+  units: DISTANCE_UNIT.to_sym,
   cache: Redis.new,
   always_raise: :all,
   cache_options: {

spec/models/user_spec.rb

@@ -50,8 +50,8 @@ RSpec.describe User, type: :model do
       end
     end
 
-    describe '#total_km' do
+    describe '#total_distance' do
-      subject { user.total_km }
+      subject { user.total_distance }
 
       let!(:stat1) { create(:stat, user:, distance: 10) }
       let!(:stat2) { create(:stat, user:, distance: 20) }