making it work

deploy-chatmail/src/deploy_chatmail/cmdeploy.py

@@ -0,0 +1,132 @@
+"""
+Provides the `cmdeploy` entry point function,
+along with command line option and subcommand parsing.
+"""
+import importlib.resources
+import argparse
+from pathlib import Path
+
+import iniconfig
+
+from termcolor import colored
+from chatmaild.config import read_config
+
+
+class Out:
+    """Convenience print output printer providing coloring."""
+
+    def red(self, msg):
+        print(colored(msg, "red"))
+
+    def green(self, msg):
+        print(colored(msg, "green"))
+
+    def __call__(self, msg, red=False, green=False):
+        color = "red" if red else ("green" if green else None)
+        print(colored(msg, color))
+
+
+description = """\
+Setup your chatmail server configuration and
+deploy it via SSH to your remote location.
+"""
+
+
+def add_config_option(parser):
+    parser.add_argument(
+        "--config",
+        dest="chatmail_ini",
+        action="store",
+        default=Path("chatmail.ini"),
+        type=Path,
+        help="path to the chatmail.ini file",
+    )
+
+
+def add_subcommand(subparsers, func):
+    name = func.__name__
+    assert name.endswith("_cmd")
+    name = name[:-4]
+    doc = func.__doc__.strip()
+    p = subparsers.add_parser(name, description=doc, help=doc)
+    p.set_defaults(func=func)
+    return p
+
+
+def get_parser():
+    """Return an ArgumentParser for the 'cmdeploy' CLI."""
+    parser = argparse.ArgumentParser(description=description)
+    subparsers = parser.add_subparsers(
+        title="subcommands",
+    )
+
+    init_parser = add_subcommand(subparsers, init_cmd)
+    add_config_option(init_parser)
+    init_parser.add_argument(
+        "chatmail_domain",
+        action="store",
+        help="fully qualified DNS domain name for your chatmail instance",
+    )
+
+    install_parser = add_subcommand(subparsers, install_cmd)
+    add_config_option(install_parser)
+    return parser
+
+def write_initial_config(inipath, mailname, out):
+    inidir = importlib.resources.files(__package__).joinpath("ini")
+    content = inidir.joinpath("chatmail.ini.f").read_text().format(mailname=mailname)
+    if mailname.endswith(".testrun.org"):
+        override_inipath = inidir.joinpath("override-testrun.ini")
+        privacy = iniconfig.IniConfig(override_inipath)["privacy"]
+        lines = []
+        for line in content.split("\n"):
+            for key, value in privacy.items():
+                value_lines = value.strip().split("\n")
+                if not line.startswith(f"{key} =") or not value_lines:
+                    continue
+                if len(value_lines) == 1:
+                    lines.append(f"{key} = {value}")
+                else:
+                    lines.append(f"{key} =")
+                    for vl in value_lines:
+                        lines.append(f"    {vl}")
+                break
+            else:
+                lines.append(line)
+        content = "\n".join(lines)
+
+    inipath.write_text(content)
+    out(f"written {inipath} for chatmail domain {mailname}")
+
+
+def init_cmd(args, out):
+    """Initialize chatmail config file."""
+    if args.chatmail_ini.exists():
+        out.red(f"Path exists, not modifying: {args.xdcget_ini}")
+        raise SystemExit(1)
+    write_initial_config(args.chatmail_ini, args.chatmail_domain, out)
+
+
+def install_cmd(args, out):
+    """Install or update chatmail services on the remote server. """
+    try:
+        config = read_config(args.chatmail_ini)
+    except Exception as ex:
+        out.red(ex)
+        raise SystemExit(1)
+
+    XXX
+
+
+def main(args=None):
+    """Provide main entry point for 'xdcget' CLI invocation."""
+    parser = get_parser()
+    args = parser.parse_args(args=args)
+    if not hasattr(args, "func"):
+        return parser.parse_args(["-h"])
+    out = Out()
+    args.func(args, out)
+
+
+if __name__ == "__main__":
+    main()