1 files changed, 200 insertions, 0 deletions
diff --git a/python/cru/service/_gen_cmd.py b/python/cru/service/_gen_cmd.py
new file mode 100644
index 0000000..f51d65f
--- /dev/null
+++ b/python/cru/service/_gen_cmd.py
@@ -0,0 +1,200 @@
+from dataclasses import dataclass, replace
+from typing import TypeAlias
+
+from ._base import AppCommandFeatureProvider
+from ._nginx import NginxManager
+
+_Str_Or_Cmd_List: TypeAlias = str | list["_Cmd"]
+
+
+@dataclass
+class _Cmd:
+    name: str
+    desc: str
+    cmd: _Str_Or_Cmd_List
+
+    def clean(self) -> "_Cmd":
+        if isinstance(self.cmd, list):
+            return replace(
+                self,
+                cmd=[cmd.clean() for cmd in self.cmd],
+            )
+        elif isinstance(self.cmd, str):
+            return replace(self, cmd=self.cmd.strip())
+        else:
+            raise ValueError("Unexpected type for cmd.")
+
+    def generate_text(
+        self,
+        info_only: bool,
+        *,
+        parent: str | None = None,
+    ) -> str:
+        if parent is None:
+            tag = "COMMAND"
+            long_name = self.name
+            indent = ""
+        else:
+            tag = "SUBCOMMAND"
+            long_name = f"{parent}.{self.name}"
+            indent = "  "
+
+        if info_only:
+            return f"{indent}[{long_name}]: {self.desc}"
+
+        text = f"--- {tag}[{long_name}]: {self.desc}"
+        if isinstance(self.cmd, str):
+            text += "\n" + self.cmd
+        elif isinstance(self.cmd, list):
+            for sub in self.cmd:
+                text += "\n" * 2 + sub.generate_text(info_only, parent=self.name)
+        else:
+            raise ValueError("Unexpected type for cmd.")
+
+        lines: list[str] = []
+        for line in text.splitlines():
+            if len(line) == 0:
+                lines.append("")
+            else:
+                lines.append(indent + line)
+        text = "\n".join(lines)
+
+        return text
+
+
+_docker_uninstall = _Cmd(
+    "uninstall",
+    "uninstall apt docker",
+    """
+for pkg in docker.io docker-doc docker-compose \
+podman-docker containerd runc; \
+do sudo apt-get remove $pkg; done
+""",
+)
+
+_docker_apt_certs = _Cmd(
+    "apt-certs",
+    "prepare apt certs",
+    """
+sudo apt-get update
+sudo apt-get install ca-certificates curl
+sudo install -m 0755 -d /etc/apt/keyrings
+""",
+)
+
+_docker_docker_certs = _Cmd(
+    "docker-certs",
+    "add docker certs",
+    """
+sudo curl -fsSL https://download.docker.com/linux/debian/gpg \
+-o /etc/apt/keyrings/docker.asc
+sudo chmod a+r /etc/apt/keyrings/docker.asc
+""",
+)
+
+_docker_apt_repo = _Cmd(
+    "apt-repo",
+    "add docker apt repo",
+    """
+echo \\
+  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] \
+https://download.docker.com/linux/debian \\
+  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \\
+  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+""",
+)
+
+_docker_install = _Cmd(
+    "install",
+    "update apt and install docker",
+    """
+sudo apt-get update
+sudo apt-get install docker-ce docker-ce-cli containerd.io \
+docker-buildx-plugin docker-compose-plugin
+""",
+)
+
+_docker_setup = _Cmd(
+    "setup",
+    "setup system for docker",
+    """
+sudo systemctl enable docker
+sudo systemctl start docker
+sudo groupadd -f docker
+sudo usermod -aG docker $USER
+# Remember to log out and log back in for the group changes to take effect
+""",
+)
+
+_docker = _Cmd(
+    "install-docker",
+    "install docker for a fresh new system",
+    [
+        _docker_uninstall,
+        _docker_apt_certs,
+        _docker_docker_certs,
+        _docker_apt_repo,
+        _docker_install,
+        _docker_setup,
+    ],
+)
+
+_update_blog = _Cmd(
+    "update-blog",
+    "re-generate blog pages",
+    """
+docker exec -it blog /scripts/update.bash
+""",
+)
+
+_git_user = _Cmd(
+    "git-user",
+    "add/set git server user and password",
+    """
+docker run -it --rm -v "$ps_file:/user-info" httpd htpasswd "/user-info" [username]
+""",
+)
+
+
+class GenCmdProvider(AppCommandFeatureProvider):
+    def __init__(self) -> None:
+        super().__init__("gen-cmd-provider")
+        self._cmds: dict[str, _Cmd] = {}
+        self._register_cmds(_docker, _update_blog, _git_user)
+
+    def _register_cmd(self, cmd: "_Cmd"):
+        self._cmds[cmd.name] = cmd.clean()
+
+    def _register_cmds(self, *cmds: "_Cmd"):
+        for c in cmds:
+            self._register_cmd(c)
+
+    def setup(self):
+        pass
+
+    def get_command_info(self):
+        return ("gen-cmd", "Get commands of running external cli tools.")
+
+    def setup_arg_parser(self, arg_parser):
+        subparsers = arg_parser.add_subparsers(
+            dest="gen_cmd", metavar="GEN_CMD_COMMAND"
+        )
+        certbot_parser = subparsers.add_parser("certbot", help="print certbot commands")
+        certbot_parser.add_argument(
+            "-t", "--test", action="store_true", help="run certbot in test mode"
+        )
+        for cmd in self._cmds.values():
+            subparsers.add_parser(cmd.name, help=cmd.desc)
+
+    def _print_cmd(self, name: str):
+        print(self._cmds[name].generate_text(False))
+
+    def run_command(self, args):
+        if args.gen_cmd is None or args.gen_cmd == "list":
+            print("[certbot]: certbot ssl cert commands")
+            for cmd in self._cmds.values():
+                print(cmd.generate_text(True))
+        elif args.gen_cmd == "certbot":
+            self.app.get_feature(NginxManager).print_all_certbot_commands(args.test)
+        else:
+            self._print_cmd(args.gen_cmd)