From e611d61739813ac6175e7051b6955c3ec875d1cc Mon Sep 17 00:00:00 2001
From: Thomas Sileo <t@a4.io>
Date: Sun, 27 Oct 2019 19:05:42 +0100
Subject: [PATCH] Add "location" support (embed a tag with a Place object)

---
 blueprints/api.py         | 37 ++++++++++++++++++++++++++++++++++++-
 templates/new.html        | 21 +++++++++++++++++++++
 templates/utils.html      |  5 +++++
 utils/template_filters.py | 31 +++++++++++++++++++++++++++++++
 4 files changed, 93 insertions(+), 1 deletion(-)

diff --git a/blueprints/api.py b/blueprints/api.py
index 3bc6d4a..b71335d 100644
--- a/blueprints/api.py
+++ b/blueprints/api.py
@@ -1,3 +1,4 @@
+import logging
 import mimetypes
 from datetime import datetime
 from datetime import timedelta
@@ -50,6 +51,8 @@ from core.tasks import Tasks
 from utils import emojis
 from utils import now
 
+_logger = logging.getLogger(__name__)
+
 blueprint = flask.Blueprint("api", __name__)
 
 
@@ -450,6 +453,7 @@ def api_new_note() -> _Response:
 
     source = None
     summary = None
+    place_tags = []
 
     # Basic Micropub (https://www.w3.org/TR/micropub/) "create" support
     is_micropub = False
@@ -463,8 +467,24 @@ def api_new_note() -> _Response:
         if "jwt_payload" not in flask.g or "create" not in flask.g.jwt_payload["scope"]:
             abort(403)
 
+        # Handle location sent via form-data
+        # `geo:28.5,9.0,0.0`
+        location = _user_api_arg("location", default="")
+        if location.startswith("geo:"):
+            slat, slng, *_ = location[4:].split(",")
+            place_tags.append(
+                {
+                    "type": ap.ActivityType.PLACE.value,
+                    "url": "",
+                    "name": "",
+                    "latitude": float(slat),
+                    "longitude": float(slng),
+                }
+            )
+
         # Handle JSON microformats2 data
         if _user_api_arg("type", default=None):
+            _logger.info(f"Micropub request: {request.json}")
             try:
                 source = request.json["properties"]["content"][0]
             except (ValueError, KeyError):
@@ -493,6 +513,21 @@ def api_new_note() -> _Response:
     if summary is None:
         summary = _user_api_arg("summary", default="")
 
+    if not place_tags:
+        if _user_api_arg("location_lat", default=None):
+            lat = float(_user_api_arg("location_lat"))
+            lng = float(_user_api_arg("location_lng"))
+            loc_name = _user_api_arg("location_name", default="")
+            place_tags.append(
+                {
+                    "type": ap.ActivityType.PLACE.value,
+                    "url": "",
+                    "name": loc_name,
+                    "latitude": lat,
+                    "longitude": lng,
+                }
+            )
+
     # All the following fields are specific to the API (i.e. not Micropub related)
     _reply, reply = None, None
     try:
@@ -507,7 +542,7 @@ def api_new_note() -> _Response:
     content, tags = parse_markdown(source)
 
     # Check for custom emojis
-    tags = tags + emojis.tags(content)
+    tags = tags + emojis.tags(content) + place_tags
 
     to: List[str] = []
     cc: List[str] = []
diff --git a/templates/new.html b/templates/new.html
index 180cd11..44e4d63 100644
--- a/templates/new.html
+++ b/templates/new.html
@@ -49,6 +49,15 @@
 <input type="text" name="file_description" placeholder="attachment description (optional)">
 </p>
 
+<p>
+<input type="text" name="location_lat" id="location_lat" placeholder="latitude (optional)">
+<input type="text" name="location_lng" id="location_lng" placeholder="longitude (optional)">
+<a href="#" class="location_autofill">ask browser for location</a>
+</p>
+<p>
+<input type="text" name="location_name" placeholder="location name (optional)">
+</p>
+
 {% if request.args.get("question") == "1" %}
 <div style="margin-top:20px;">
     <p>Open for: <select name="open_for">
@@ -114,4 +123,16 @@ var items = document.getElementsByClassName("ji")
 for (var i = 0; i < items.length; i++) {
     items[i].addEventListener('click', ji);
 }
+var askForLocation = function(ev) {
+    ev.preventDefault();
+    navigator.geolocation.getCurrentPosition(function(position) {
+        document.getElementById("location_lat").value = position.coords.latitude;
+        document.getElementById("location_lng").value = position.coords.longitude;
+    });
+}
+var items = document.getElementsByClassName("location_autofill")
+for (var i = 0; i < items.length; i++) {
+    items[i].addEventListener('click', askForLocation);
+}
+
 </script>{% endblock %}
diff --git a/templates/utils.html b/templates/utils.html
index 7062e24..e0b774e 100644
--- a/templates/utils.html
+++ b/templates/utils.html
@@ -208,6 +208,11 @@
     {% else %}
 	{{ obj.content | clean | replace_custom_emojis(obj) | code_highlight | safe }}
     {% endif %}
+
+    {% if obj | has_place %}
+    <p>Location: {{ obj | get_place | safe }}</p>
+    {% endif %}
+
 	</div>
 
 	{% if obj.attachment and obj | has_type('Note') %}
diff --git a/utils/template_filters.py b/utils/template_filters.py
index 71f6cdc..6cf6d75 100644
--- a/utils/template_filters.py
+++ b/utils/template_filters.py
@@ -240,6 +240,37 @@ def get_actor(url):
         return f"Error<{url}/{exc!r}>"
 
 
+@filters.app_template_filter()
+def has_place(note):
+    for tag in note.get("tag", []):
+        if tag.get("type") == "Place":
+            return True
+    return False
+
+
+@filters.app_template_filter()
+def get_place(note):
+    for tag in note.get("tag", []):
+        if tag.get("type") == "Place":
+            lat = tag["latitude"]
+            lng = tag["longitude"]
+            out = ""
+            if tag.get("name"):
+                out += f"{tag['name']} "
+
+            out += (
+                '<span class="h-geo">'
+                f'<data class="p-latitude" value="{lat}"></data>'
+                f'<data class="p-longitude" value="{lng}"></data>'
+                f'<a href="https://www.openstreetmap.org/?mlat={lat}&mlon={lng}#map=16/{lat}/{lng}">{lat},{lng}</a>'
+                "</span>"
+            )
+
+            return out
+
+    return ""
+
+
 @filters.app_template_filter()
 def poll_answer_key(choice: str) -> str:
     return _answer_key(choice)