changed changelog command to accept a version as argument

Fixed version numbering and typo in CHANGELOG

Fixes #116

CHANGELOG.md

@@ -5,9 +5,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 
 ## [Unreleased]
+### Changed
+- changelog command to accept a version as argument.
 
 
-## [v2.1.0] - 2020-01-04
+## [2.1.0] - 2020-01-04
 ### Added
 - New NATO "phonetics" command.
 - Flag emojis to commands with countries.
@@ -18,14 +20,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Command linking to the issue tracker.
 - New key in options.py: pika.
 ### Changed
-- The "phonetics" command is not called "funetics".
+- The "phonetics" command is now called "funetics".
 - All commands now respond in embeds.
 - Playing status can now change on a schedule or randomly from a list.
 ### Fixed
 - Fixed incorrect information in the `prefixes` command.
 
 
-## [v2.0.0] - 2019-12-16
+## [2.0.0] - 2019-12-16
 ### Added
 - Rich lookup for AE7Q.com (callsigns only, more to come)
 - Rich lookup for QRZ.com, if a QRZ subscription is present
@@ -52,9 +54,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Issue in morse and unmorse commands where spaces were not interpreted correctly
 
 
-## v1.0.0 - 2019-07-31 [YANKED]
+## 1.0.0 - 2019-07-31 [YANKED]
 
 
 [Unreleased]: https://github.com/classabbyamp/discord-qrm2/compare/v2.1.0...HEAD
-[v2.1.0]: https://github.com/classabbyamp/discord-qrm2/releases/tag/v2.1.0
-[v2.0.0]: https://github.com/classabbyamp/discord-qrm2/releases/tag/v2.0.0
+[2.1.0]: https://github.com/classabbyamp/discord-qrm2/releases/tag/v2.1.0
+[2.0.0]: https://github.com/classabbyamp/discord-qrm2/releases/tag/v2.0.0

exts/base.py

@@ -120,25 +120,38 @@ class BaseCog(commands.Cog):
         await ctx.send(content, embed=embed)
 
     @commands.command(name="changelog", aliases=["clog"])
-    async def _changelog(self, ctx: commands.Context):
+    async def _changelog(self, ctx: commands.Context, version: str = 'latest'):
         """Show what has changed in the most recent bot version."""
         embed = cmn.embed_factory(ctx)
         embed.title = "qrm Changelog"
         embed.description = ("For a full listing, visit [Github](https://"
                              "github.com/classabbyamp/discord-qrm2/blob/master/CHANGELOG.md).")
         changelog = self.changelog
+        vers = list(changelog.keys())
+        vers.remove("Unreleased")
 
-        vers = 0
-        for ver, log in changelog.items():
-            if ver.lower() != 'unreleased':
-                if 'date' in log:
-                    embed.description += f'\n\n**{ver}** ({log["date"]})'
-                else:
-                    embed.description += f'\n\n**{ver}**'
-                embed = await format_changelog(log, embed)
-                vers += 1
-            if vers >= 1:
-                break
+        version = version.lower()
+
+        if version == 'latest':
+            version = info.release
+        if version == 'unreleased':
+            version = 'Unreleased'
+
+        try:
+            log = changelog[version]
+        except KeyError:
+            embed.title += ": Version Not Found"
+            embed.description += '\n\n**Valid versions:** latest, '
+            embed.description += ', '.join(vers)
+            embed.colour = cmn.colours.bad
+            await ctx.send(embed=embed)
+            return
+
+        if 'date' in log:
+            embed.description += f'\n\n**v{version}** ({log["date"]})'
+        else:
+            embed.description += f'\n\n**v{version}**'
+        embed = await format_changelog(log, embed)
 
         await ctx.send(embed=embed)