Added MUF and foF2 maps

Fixes #311

exts/propagation.py

@@ -0,0 +1,60 @@
+"""
+Propagation extension for qrm
+---
+Copyright (C) 2019-2020 Abigail Gold, 0x5c
+
+This file is part of qrm2 and is released under the terms of
+the GNU General Public License, version 2.
+"""
+
+
+from io import BytesIO
+
+import aiohttp
+import cairosvg
+
+import discord
+import discord.ext.commands as commands
+
+import common as cmn
+
+
+class PropagationCog(commands.Cog):
+    muf_url = "https://prop.kc2g.com/renders/current/mufd-normal-now.svg"
+    fof2_url = "https://prop.kc2g.com/renders/current/fof2-normal-now.svg"
+
+    def __init__(self, bot):
+        self.bot = bot
+        self.session = aiohttp.ClientSession(connector=bot.qrm.connector)
+
+    @commands.command(name="mufmap", aliases=["muf"], category=cmn.cat.weather)
+    async def mufmap(self, ctx: commands.Context):
+        """Shows a world map of the Maximum Usable Frequency (MUF)."""
+        async with ctx.typing():
+            async with self.session.get(self.muf_url) as r:
+                svg = await r.read()
+            out = BytesIO(cairosvg.svg2png(bytestring=svg))
+            file = discord.File(out, "muf_map.png")
+            embed = cmn.embed_factory(ctx)
+            embed.title = "Maximum Usable Frequency Map"
+            embed.description = "Image from [prop.kc2g.com](https://prop.kc2g.com/)\nData sources listed on the page."
+            embed.set_image(url="attachment://muf_map.png")
+            await ctx.send(file=file, embed=embed)
+
+    @commands.command(name="fof2map", aliases=["fof2", "critfreq"], category=cmn.cat.weather)
+    async def fof2map(self, ctx: commands.Context):
+        """Shows a world map of the Critical Frequency (foF2)."""
+        async with ctx.typing():
+            async with self.session.get(self.fof2_url) as r:
+                svg = await r.read()
+            out = BytesIO(cairosvg.svg2png(bytestring=svg))
+            file = discord.File(out, "fof2_map.png")
+            embed = cmn.embed_factory(ctx)
+            embed.title = "Critical Frequency (foF2) Map"
+            embed.description = "Image from [prop.kc2g.com](https://prop.kc2g.com/)\nData sources listed on the page."
+            embed.set_image(url="attachment://fof2_map.png")
+            await ctx.send(file=file, embed=embed)
+
+
+def setup(bot: commands.Bot):
+    bot.add_cog(PropagationCog(bot))

requirements.txt

@@ -3,3 +3,4 @@ ctyparser~=2.0
 beautifulsoup4
 lxml
 pytz
+cairosvg

templates/data/options.py

@@ -30,7 +30,21 @@ debug = False
 owners_uids = (200102491231092736,)
 
 # The extensions to load when running the bot.
-exts = ["ae7q", "base", "fun", "grid", "ham", "image", "lookup", "morse", "qrz", "study", "weather", "dbconv"]
+exts = [
+    "ae7q",
+    "base",
+    "fun",
+    "grid",
+    "ham",
+    "image",
+    "lookup",
+    "morse",
+    "qrz",
+    "study",
+    "weather",
+    "dbconv",
+    "propagation",
+]
 
 # Either "time", "random", or "fixed" (first item in statuses)
 status_mode = "fixed"