blah

src/viv/viv.py

@@ -51,7 +51,7 @@ from typing import (
     Generator,
 )
 
-__version__ = "22.12a3-48-gf87aab9-dev"
+__version__ = "22.12a3-48-g30cb4b5-dev"
 
 
 @dataclass
@@ -61,9 +61,16 @@ class Config:
     venvcache: Path = (
         Path(os.getenv("XDG_CACHE_HOME", Path.home() / ".cache")) / "viv" / "venvs"
     )
+    srccache: Path = (
+        Path(os.getenv("XDG_CACHE_HOME", Path.home() / ".cache")) / "viv" / "src"
+    )
 
     def __post_init__(self) -> None:
         self.venvcache.mkdir(parents=True, exist_ok=True)
+        self.srccache.mkdir(
+            parents=True,
+            exist_ok=True,
+        )
 
 
 c = Config()
@@ -528,8 +535,7 @@ STANDALONE_TEMPLATE = r"""
 # >>>>> code golfed with <3
 """  # noqa
 
-STANDALONE_TEMPLATE_USE = r"""
-def _viv_use(*pkgs: str, track_exe: bool = False, name: str = "") -> None:
+STANDALONE_TEMPLATE_USE = r"""def _viv_use(*pkgs: str, track_exe: bool = False, name: str = "") -> None:
     i,s,m,e,spec=__import__,str,map,lambda x: True if x else False,[*pkgs]
     if not {{*m(type,pkgs)}}=={{s}}: raise ValueError(f"spec: {{pkgs}} is invalid")
     ge,sys,P,ew=i("os").getenv,i("sys"),i("pathlib").Path,i("sys").stderr.write
@@ -548,14 +554,19 @@ def _viv_use(*pkgs: str, track_exe: bool = False, name: str = "") -> None:
             i("json").dump({{"created":s(i("datetime").datetime.today()),"id":_id,"spec":spec,"exe":exe}},f)
     sys.path = [p for p in (*sys.path,s(*(env/"lib").glob("py*/si*"))) if p!=i("site").USER_SITE]
 _viv_use({spec})
-"""[  # noqa
-    1:
-]
+"""  # noqa
 
-SHOW_TEMPLATE = f"""\
+SHOW_TEMPLATE = f"""
   {a.style('Version', 'bold')}: {{version}}
   {a.style('CLI', 'bold')}: {{cli}}
-  {a.style('Source File', 'bold')}: {{src}}
+  {a.style('Current Source', 'bold')}: {{src}}
+"""
+
+INSTALL_TEMPLATE = f"""
+
+  Install viv.py to {a.bold}{{src_location}}{a.end}
+  Symlink {a.bold}{{src_location}}{a.end} to {a.bold}{{cli_location}}{a.end}
+
 """
 
 
@@ -710,7 +721,7 @@ class CustomHelpFormatter(RawDescriptionHelpFormatter, HelpFormatter):
         # determine the required width and the entry label
         help_position = min(self._action_max_length + 2, self._max_help_position)
         help_width = max(self._width - help_position, 11)
-        action_width = help_position - self._current_indent - 2
+        action_width = help_position - self._current_indent
         action_header = self._format_action_invocation(action)
         action_header_len = len(a.escape(action_header))
 
@@ -782,7 +793,8 @@ class ArgumentParser(StdArgParser):
         super().__init__(*args, **kwargs)
 
         self.formatter_class = lambda prog: CustomHelpFormatter(
-            prog, max_help_position=35
+            prog,
+            max_help_position=35,
         )
 
     def error(self, message: str) -> NoReturn:
@@ -804,9 +816,43 @@ within python script:
 """
 
 
+def fetch_source(reference: str) -> str:
+    try:
+        r = urlopen(
+            "https://raw.githubusercontent.com/daylinmorgan/viv/"
+            + reference
+            + "/src/viv/viv.py"
+        )
+    except HTTPError as e:
+        error(
+            "Issue updating viv see below:"
+            + a.style("->  ", "red").join(["\n"] + repr(e).splitlines())
+        )
+        if "404" in repr(e):
+            echo("Please check your reference is valid.", style="red")
+        sys.exit(1)
+
+    src = r.read()
+    (hash := hashlib.sha256()).update(src)
+    sha256 = hash.hexdigest()
+
+    cached_src_file = c.srccache / f"{sha256}.py"
+
+    if not cached_src_file.is_file():
+        with cached_src_file.open("w") as f:
+            f.write(src.decode())
+
+    return sha256
+
+
 class Viv:
     def __init__(self) -> None:
         self.vivenvs = get_venvs()
+        self.current_source = Path(__file__).resolve()
+        self.local = not str(self.current_source).startswith("/proc/")
+        self.name = (
+            "python3 <(curl -fsSL gh.dayl.in/viv/viv.py)" if self.local else "viv"
+        )
 
     def _match_vivenv(self, name_id: str) -> ViVenv:  # type: ignore[return]
         # TODO: improve matching algorithm to favor names over id's
@@ -918,8 +964,7 @@ class Viv:
         """manage viv installation"""
 
         if args.cmd == "show":
-            # NOTE: could reuse the table output for this?
-            echo("Installation Info:")
+            echo("Current:")
             sys.stdout.write(
                 SHOW_TEMPLATE.format(
                     version=__version__,
@@ -929,58 +974,66 @@ class Viv:
             )
 
         elif args.cmd == "update":
-            echo(__file__)
-            echo(Path(__file__))
-            if str(Path(__file__).resolve()).startswith("/proc/"):
+            if not self.local:
                 error(
                     a.style("viv manage update", "bold")
-                    + "should be used with a locally installed viv",
+                    + " should only be used with a locally installed viv",
                     1,
                 )
-            try:
-                r = urlopen(
-                    "https://raw.githubusercontent.com/daylinmorgan/viv/"
-                    + args.reference
-                    + "/src/viv/viv.py"
-                )
-            except HTTPError as e:
-                error(
-                    "Issue updating viv see below:"
-                    + a.style("->  ", "red").join(["\n"] + repr(e).splitlines())
-                )
-                if "404" in repr(e):
-                    echo("Please check your reference is valid.", style="red")
-                sys.exit(1)
-
-            viv_src = r.read()
-
-            (hash := hashlib.sha256()).update(viv_src)
-            sha256 = hash.hexdigest()
-
-            (
-                src_cache := Path(os.getenv("XDG_CACHE_HOME", Path.home() / ".cache"))
-                / "viv"
-                / "src"
-            ).mkdir(exist_ok=True, parents=True)
-            cached_version = src_cache / f"{sha256}.py"
-
-            if not cached_version.is_file():
-                with cached_version.open("w") as f:
-                    f.write(viv_src.decode())
-
-            sys.path.append(str(src_cache))
+            #
+            # viv_src = fetch_source(args.reference)
+            #
+            # (hash := hashlib.sha256()).update(viv_src)
+            # sha256 = hash.hexdigest()
+            #
+            # (
+            #     src_cache := Path(os.getenv("XDG_CACHE_HOME", Path.home() / ".cache"))
+            #     / "viv"
+            #     / "src"
+            # ).mkdir(exist_ok=True, parents=True)
+            # cached_version = src_cache / f"{sha256}.py"
+            #
+            # if not cached_version.is_file():
+            #     with cached_version.open("w") as f:
+            #         f.write(viv_src.decode())
+            #
+            sha256 = fetch_source(args.reference)
+            sys.path.append(str(c.srccache))
             next_version = __import__(sha256).__version__
+
             q = (
                 "Update source at: "
-                + a.style(Path(__file__).resolve(), "bold")
+                + a.style(self.current_source, "bold")
                 + f" \n from version {__version__} to {next_version}?"
             )
 
             if confirm(q):
-                print("AWAY THEN")
+                print("Holding off on the additions of this piece")
 
         elif args.cmd == "install":
-            echo("not yet implemented. sorry")
+            if self.local:
+                error(
+                    a.style("viv manage install", "bold")
+                    + " should only be used with a remote viv",
+                )
+                echo(
+                    "use "
+                    + a.style("viv manage update", "bold")
+                    + " to modify current installation.",
+                    style="red",
+                )
+                sys.exit(1)
+
+            sha256 = fetch_source(args.reference)
+            sys.path.append(str(c.srccache))
+            downloaded_version = __import__(sha256).__version__
+            echo(f"Downloaded version: {downloaded_version}")
+            q = INSTALL_TEMPLATE.format(
+                src_location="~/.local/share/viv/viv.py", cli_location="~/bin/viv"
+            ) + ("Would you like to perform the above " "installation steps?")
+
+            if confirm(q):
+                print("AWAY MAN")
 
     def _get_subcmd_parser(
         self,
@@ -1005,7 +1058,7 @@ class Viv:
     def cli(self) -> None:
         """cli entrypoint"""
 
-        parser = ArgumentParser(description=description)
+        parser = ArgumentParser(prog=self.name, description=description)
         parser.add_argument(
             "-V",
             "--version",
@@ -1018,10 +1071,7 @@ class Viv:
         )
         p_vivenv_arg = ArgumentParser(add_help=False)
         p_vivenv_arg.add_argument("vivenv", help="name/hash of vivenv")
-        p_list = self._get_subcmd_parser(
-            subparsers,
-            "list",
-        )
+        p_list = self._get_subcmd_parser(subparsers, "list")
 
         p_list.add_argument(
             "-q",
@@ -1103,15 +1153,22 @@ class Viv:
             subparsers, name="manage"
         ).add_subparsers(title="subcommand", metavar="<sub-cmd>", required=True)
 
-        p_manage_sub.add_parser(
-            "install",
-            help="install viv",
+        # TODO: shared parser?
+        (
+            p_manage_install := p_manage_sub.add_parser(
+                "install", help="install viv", aliases="i"
+            )
         ).set_defaults(func=self.manage, cmd="install")
+        p_manage_install.add_argument(
+            "-r",
+            "--reference",
+            help="git reference (branch/tag/commit)",
+            default="main",
+        )
 
         (
             p_manage_update := p_manage_sub.add_parser(
-                "update",
-                help="update viv version",
+                "update", help="update viv version", aliases="u"
             )
         ).set_defaults(func=self.manage, cmd="update")
 
@@ -1123,7 +1180,7 @@ class Viv:
         )
 
         p_manage_sub.add_parser(
-            "show", help="show current installation info"
+            "show", help="show current installation info", aliases="s"
         ).set_defaults(func=self.manage, cmd="show")
 
         args = parser.parse_args()