flavours/cli: colorise output, add -j/--json arg

flavours/cli.py

@@ -1,20 +1,54 @@
 import click
+import logging
 
-from .flavour import get_flavours
+from json import dumps
+
+from config.state import config
+from utils import colors_supported, color_str
+
+from .flavour import get_flavours, get_profile_flavour
 
 profile_option = click.option('-p', '--profile', help="name of the profile to use", required=False, default=None)
 
 
 @click.command(name='flavours')
-def cmd_flavours():
+@click.option('-j', '--json', is_flag=True, help='output machine-parsable JSON format')
+def cmd_flavours(json: bool = False):
     'list information about available flavours'
+    results = []
+    profile_flavour = None
     flavours = get_flavours()
+    use_colors = colors_supported(config.runtime.colors)
     if not flavours:
         raise Exception("No flavours found!")
+    if not json:
+        try:
+            profile_flavour = get_profile_flavour()
+        except Exception as ex:
+            logging.debug(f"Failed to get profile flavour for marking as currently selected, continuing anyway. Exception: {ex}")
     for name in sorted(flavours.keys()):
         f = flavours[name]
         try:
             f.parse_flavourinfo()
-        except:
-            pass
-        print(f)
+        except Exception as ex:
+            logging.debug(f"A problem happened while parsing flavourinfo for {name}, continuing anyway. Exception: {ex}")
+        if not json:
+            block = [*f.nice_str(newlines=True, colors=use_colors).split('\n'), '']
+            if profile_flavour == f:
+                prefix = color_str('>>> ', bold=True, fg='bright_green', use_colors=use_colors)
+                block += [
+                    color_str("Currently selected by profile ", bold=True, use_colors=use_colors) +
+                    color_str(f'"{config.file.profiles.current}"\n', bold=True, fg="bright_green")
+                ]
+                block = [prefix + line for line in block]
+            results += block
+        else:
+            f.pkgbuild = f.pkgbuild.name if f.pkgbuild else None
+            d = dict(f)
+            results += [d]
+    print()
+    if json:
+        print(dumps({r['name']: r for r in results}, indent=4))
+    else:
+        for r in results:
+            print(r)