feat: add shell-completions subcommand (#76)

pyproject.toml

@@ -48,20 +48,21 @@ build-backend = "hatchling.build"
 
 [tool.uv]
 dev-dependencies = [
-    "pytest>=8.3.2",
     "codecov>=2.1.13",
-    "mkdocstrings>=0.26.1",
-    "mkdocs-literate-nav>=0.6.1",
+    "mkdocs-callouts>=1.14.0",
     "mkdocs-gen-files>=0.5.0",
-    "mkdocs-section-index>=0.3.9",
-    "mkdocs-material>=9.5.34",
-    "mkdocstrings-python>=1.11.1",
+    "mkdocs-git-authors-plugin>=0.9.0",
+    "mkdocs-git-committers-plugin>=0.2.3",
     "mkdocs-git-revision-date-localized-plugin",
+    "mkdocs-git-revision-date-localized-plugin>=1.2.9",
     "mkdocs-glightbox>=0.4.0",
-    "mkdocs-redirects>=1.2.1",
     "mkdocs-include-markdown-plugin>=6.2.2",
-    "mkdocs-callouts>=1.14.0",
-    "mkdocs-git-authors-plugin>=0.9.0",
-    "mkdocs-git-revision-date-localized-plugin>=1.2.9",
-    "mkdocs-git-committers-plugin>=0.2.3",
+    "mkdocs-literate-nav>=0.6.1",
+    "mkdocs-material>=9.5.34",
+    "mkdocs-redirects>=1.2.1",
+    "mkdocs-section-index>=0.3.9",
+    "mkdocstrings-python>=1.11.1",
+    "mkdocstrings>=0.26.1",
+    "pytest-mock>=3.14.0",
+    "pytest>=8.3.2"
 ]

src/goose/cli/main.py

@@ -1,3 +1,4 @@
+import os
 from datetime import datetime
 from pathlib import Path
 from typing import Optional
@@ -10,6 +11,7 @@
 from goose.cli.session import Session
 from goose.toolkit.utils import render_template, parse_plan
 from goose.utils import load_plugins
+from goose.utils.autocomplete import SUPPORTED_SHELLS, setup_autocomplete
 from goose.utils.session_file import list_sorted_session_files
 
 
@@ -43,6 +45,38 @@ def get_version() -> None:
             print(f"  [red]Could not retrieve version for {module}: {e}[/red]")
 
 
+def get_current_shell() -> str:
+    return os.getenv("SHELL", "").split("/")[-1]
+
+
+@goose_cli.command(name="shell-completions", help="Manage shell completions for goose")
+@click.option("--install", is_flag=True, help="Install shell completions")
+@click.option("--generate", is_flag=True, help="Generate shell completions")
+@click.argument(
+    "shell",
+    type=click.Choice(SUPPORTED_SHELLS),
+    default=get_current_shell(),
+)
+@click.pass_context
+def shell_completions(ctx: click.Context, install: bool, generate: bool, shell: str) -> None:
+    """Generate or install shell completions for goose
+
+    Args:
+        shell (str): shell to install completions for
+        install (bool): installs completions if true, otherwise generates
+                        completions
+    """
+    if not any([install, generate]):
+        print("[red]One of --install or --generate must be specified[/red]\n")
+        raise click.UsageError(ctx.get_help())
+
+    if sum([install, generate]) > 1:
+        print("[red]Only one of --install or --generate can be specified[/red]\n")
+        raise click.UsageError(ctx.get_help())
+
+    setup_autocomplete(shell, install=install)
+
+
 @goose_cli.group()
 def session() -> None:
     """Start or manage sessions"""
@@ -100,19 +134,36 @@ def session_planned(plan: str, args: Optional[dict[str, str]]) -> None:
     session.run()
 
 
+def autocomplete_session_files(ctx: click.Context, args: str, incomplete: str) -> None:
+    return [
+        f"{session_name}"
+        for session_name in sorted(get_session_files().keys(), reverse=True, key=lambda x: x.lower())
+        if session_name.startswith(incomplete)
+    ]
+
+
+def get_session_files() -> dict[str, Path]:
+    return list_sorted_session_files(SESSIONS_PATH)
+
+
 @session.command(name="resume")
-@click.argument("name", required=False)
+@click.argument("name", required=False, shell_complete=autocomplete_session_files)
 @click.option("--profile")
 def session_resume(name: Optional[str], profile: str) -> None:
     """Resume an existing goose session"""
+    session_files = get_session_files()
     if name is None:
-        session_files = get_session_files()
         if session_files:
             name = list(session_files.keys())[0]
             print(f"Resuming most recent session: {name} from {session_files[name]}")
         else:
             print("No sessions found.")
             return
+    else:
+        if name in session_files:
+            print(f"Resuming session: {name}")
+        else:
+            print(f"Creating new session: {name}")
     session = Session(name=name, profile=profile)
     session.run()
 
@@ -134,10 +185,6 @@ def session_clear(keep: int) -> None:
             session_file.unlink()
 
 
-def get_session_files() -> dict[str, Path]:
-    return list_sorted_session_files(SESSIONS_PATH)
-
-
 @click.group(
     invoke_without_command=True,
     name="goose",

src/goose/utils/autocomplete.py

@@ -0,0 +1,100 @@
+import sys
+from pathlib import Path
+
+from rich import print
+
+SUPPORTED_SHELLS = ["bash", "zsh", "fish"]
+
+
+def is_autocomplete_installed(file: Path) -> bool:
+    if not file.exists():
+        print(f"[yellow]{file} does not exist, creating file")
+        with open(file, "w") as f:
+            f.write("")
+
+    # https://click.palletsprojects.com/en/8.1.x/shell-completion/#enabling-completion
+    if "_GOOSE_COMPLETE" in open(file).read():
+        print(f"auto-completion already installed in {file}")
+        return True
+    return False
+
+
+def setup_bash(install: bool) -> None:
+    bashrc = Path("~/.bashrc").expanduser()
+    if install:
+        if is_autocomplete_installed(bashrc):
+            return
+        f = open(bashrc, "a")
+    else:
+        f = sys.stdout
+        print(f"# add the following to your bash config, typically {bashrc}")
+
+    with f:
+        f.write('eval "$(_GOOSE_COMPLETE=bash_source goose)"\n')
+
+    if install:
+        print(f"installed auto-completion to {bashrc}")
+        print(f"run `source {bashrc}` to enable auto-completion")
+
+
+def setup_fish(install: bool) -> None:
+    completion_dir = Path("~/.config/fish/completions").expanduser()
+    if not completion_dir.exists():
+        completion_dir.mkdir(parents=True, exist_ok=True)
+
+    completion_file = completion_dir / "goose.fish"
+    if install:
+        if is_autocomplete_installed(completion_file):
+            return
+        f = open(completion_file, "a")
+    else:
+        f = sys.stdout
+        print(f"# add the following to your fish config, typically {completion_file}")
+
+    with f:
+        f.write("_GOOSE_COMPLETE=fish_source goose | source\n")
+
+    if install:
+        print(f"installed auto-completion to {completion_file}")
+
+
+def setup_zsh(install: bool) -> None:
+    zshrc = Path("~/.zshrc").expanduser()
+    if install:
+        if is_autocomplete_installed(zshrc):
+            return
+        f = open(zshrc, "a")
+    else:
+        f = sys.stdout
+        print(f"# add the following to your zsh config, typically {zshrc}")
+
+    with f:
+        f.write("autoload -U +X compinit && compinit\n")
+        f.write("autoload -U +X bashcompinit && bashcompinit\n")
+        f.write('eval "$(_GOOSE_COMPLETE=zsh_source goose)"\n')
+
+    if install:
+        print(f"installed auto-completion to {zshrc}")
+        print(f"run `source {zshrc}` to enable auto-completion")
+
+
+def setup_autocomplete(shell: str, install: bool) -> None:
+    """Installs shell completions for goose
+
+    Args:
+        shell (str): shell to install completions for
+        install (bool): whether to install or generate completions
+    """
+
+    match shell:
+        case "bash":
+            setup_bash(install=install)
+
+        case "zsh":
+            setup_zsh(install=install)
+
+        case "fish":
+            setup_fish(install=install)
+
+        case _:
+            print(f"Shell {shell} not supported")

tests/test_autocomplete.py

@@ -0,0 +1,34 @@
+import sys
+import unittest.mock as mock
+
+from goose.utils.autocomplete import SUPPORTED_SHELLS, is_autocomplete_installed, setup_autocomplete
+
+
+def test_supported_shells():
+    assert SUPPORTED_SHELLS == ["bash", "zsh", "fish"]
+
+
+def test_install_autocomplete(tmp_path):
+    file = tmp_path / "test_bash_autocomplete"
+    assert is_autocomplete_installed(file) is False
+
+    file.write_text("_GOOSE_COMPLETE")
+    assert is_autocomplete_installed(file) is True
+
+
+@mock.patch("sys.stdout")
+def test_setup_bash(mocker: mock.MagicMock):
+    setup_autocomplete("bash", install=False)
+    sys.stdout.write.assert_called_with('eval "$(_GOOSE_COMPLETE=bash_source goose)"\n')
+
+
+@mock.patch("sys.stdout")
+def test_setup_zsh(mocker: mock.MagicMock):
+    setup_autocomplete("zsh", install=False)
+    sys.stdout.write.assert_called_with('eval "$(_GOOSE_COMPLETE=zsh_source goose)"\n')
+
+
+@mock.patch("sys.stdout")
+def test_setup_fish(mocker: mock.MagicMock):
+    setup_autocomplete("fish", install=False)
+    sys.stdout.write.assert_called_with("_GOOSE_COMPLETE=fish_source goose | source\n")

tests/test_cli_main.py

@@ -0,0 +1,21 @@
+from click.testing import CliRunner
+from goose.cli.main import get_current_shell, shell_completions
+
+
+def test_get_current_shell(mocker):
+    mocker.patch("os.getenv", return_value="/bin/bash")
+    assert get_current_shell() == "bash"
+
+
+def test_shell_completions_install_invalid_combination():
+    runner = CliRunner()
+    result = runner.invoke(shell_completions, ["--install", "--generate", "bash"])
+    assert result.exit_code != 0
+    assert "Only one of --install or --generate can be specified" in result.output
+
+
+def test_shell_completions_install_no_option():
+    runner = CliRunner()
+    result = runner.invoke(shell_completions, ["bash"])
+    assert result.exit_code != 0
+    assert "One of --install or --generate must be specified" in result.output