show.py
python
| 1 | """muse show — inspect a commit: metadata, diff, and files.""" |
| 2 | from __future__ import annotations |
| 3 | |
| 4 | import json |
| 5 | import logging |
| 6 | import pathlib |
| 7 | |
| 8 | import typer |
| 9 | |
| 10 | from muse.core.errors import ExitCode |
| 11 | from muse.core.repo import require_repo |
| 12 | from muse.core.store import get_commit_snapshot_manifest, read_commit, resolve_commit_ref |
| 13 | |
| 14 | logger = logging.getLogger(__name__) |
| 15 | |
| 16 | app = typer.Typer() |
| 17 | |
| 18 | |
| 19 | def _read_branch(root: pathlib.Path) -> str: |
| 20 | head_ref = (root / ".muse" / "HEAD").read_text().strip() |
| 21 | return head_ref.removeprefix("refs/heads/").strip() |
| 22 | |
| 23 | |
| 24 | def _read_repo_id(root: pathlib.Path) -> str: |
| 25 | return str(json.loads((root / ".muse" / "repo.json").read_text())["repo_id"]) |
| 26 | |
| 27 | |
| 28 | @app.callback(invoke_without_command=True) |
| 29 | def show( |
| 30 | ctx: typer.Context, |
| 31 | ref: str | None = typer.Argument(None, help="Commit ID or branch (default: HEAD)."), |
| 32 | stat: bool = typer.Option(True, "--stat/--no-stat", help="Show file change summary."), |
| 33 | json_out: bool = typer.Option(False, "--json", help="Output as JSON."), |
| 34 | ) -> None: |
| 35 | """Inspect a commit: metadata, diff, and files.""" |
| 36 | root = require_repo() |
| 37 | repo_id = _read_repo_id(root) |
| 38 | branch = _read_branch(root) |
| 39 | |
| 40 | commit = resolve_commit_ref(root, repo_id, branch, ref) |
| 41 | if commit is None: |
| 42 | typer.echo(f"❌ Commit '{ref}' not found.") |
| 43 | raise typer.Exit(code=ExitCode.USER_ERROR) |
| 44 | |
| 45 | if json_out: |
| 46 | import json as json_mod |
| 47 | commit_data = commit.to_dict() |
| 48 | if stat: |
| 49 | cur = get_commit_snapshot_manifest(root, commit.commit_id) or {} |
| 50 | par: dict[str, str] = ( |
| 51 | get_commit_snapshot_manifest(root, commit.parent_commit_id) or {} |
| 52 | if commit.parent_commit_id else {} |
| 53 | ) |
| 54 | stats = { |
| 55 | "files_added": sorted(set(cur) - set(par)), |
| 56 | "files_removed": sorted(set(par) - set(cur)), |
| 57 | "files_modified": sorted( |
| 58 | p for p in set(cur) & set(par) if cur[p] != par[p] |
| 59 | ), |
| 60 | } |
| 61 | typer.echo(json_mod.dumps({**commit_data, **stats}, indent=2, default=str)) |
| 62 | else: |
| 63 | typer.echo(json_mod.dumps(commit_data, indent=2, default=str)) |
| 64 | return |
| 65 | |
| 66 | typer.echo(f"commit {commit.commit_id}") |
| 67 | if commit.parent_commit_id: |
| 68 | typer.echo(f"Parent: {commit.parent_commit_id[:8]}") |
| 69 | if commit.parent2_commit_id: |
| 70 | typer.echo(f"Parent: {commit.parent2_commit_id[:8]} (merge)") |
| 71 | if commit.author: |
| 72 | typer.echo(f"Author: {commit.author}") |
| 73 | typer.echo(f"Date: {commit.committed_at}") |
| 74 | if commit.metadata: |
| 75 | for k, v in sorted(commit.metadata.items()): |
| 76 | typer.echo(f" {k}: {v}") |
| 77 | typer.echo(f"\n {commit.message}\n") |
| 78 | |
| 79 | if stat: |
| 80 | current = get_commit_snapshot_manifest(root, commit.commit_id) or {} |
| 81 | parent: dict[str, str] = {} |
| 82 | if commit.parent_commit_id: |
| 83 | parent = get_commit_snapshot_manifest(root, commit.parent_commit_id) or {} |
| 84 | |
| 85 | added = sorted(set(current) - set(parent)) |
| 86 | removed = sorted(set(parent) - set(current)) |
| 87 | modified = sorted(p for p in set(current) & set(parent) if current[p] != parent[p]) |
| 88 | |
| 89 | for p in added: |
| 90 | typer.echo(f" + {p}") |
| 91 | for p in removed: |
| 92 | typer.echo(f" - {p}") |
| 93 | for p in modified: |
| 94 | typer.echo(f" M {p}") |
| 95 | |
| 96 | total = len(added) + len(removed) + len(modified) |
| 97 | if total: |
| 98 | typer.echo(f"\n {total} file(s) changed") |