wrenn-releases/.woodpecker/scripts/release_notes.py

import base64
import os
import sys

from wrenn import Capsule

REPO_URL = "https://git.omukk.dev/tksadik92/wrenn-releases.git"
REPO_DIR = "/opt/wrenn-releases"
CAPSULE_OUTPUT = "/tmp/release_notes.md"
LOCAL_OUTPUT = os.path.join(os.path.dirname(__file__), "..", "release_notes.md")

# Default starting configuration
ZHIPU_API_KEY = os.environ.get("ZHIPU_API_KEY", "")
if ZHIPU_API_KEY:
    DEFAULT_MODEL = "zhipuai-coding-plan/glm-5.1"
else:
    DEFAULT_MODEL = "opencode/minimax-m2.5-free"

RELEASE_NOTES_EXAMPLE = """
## What's new
Sandbox HTTP proxying, terminal reliability, and auth robustness improvements.

### Proxy
- Fixed redirect loops for apps served inside sandboxes (Python HTTP server, Jupyter, etc.)
- Proxy traffic no longer interferes with terminal and exec connections
- Services that take a moment to start up inside a sandbox are now retried instead of immediately failing

### Terminal (PTY)
- Terminal input is no longer blocked by slow network conditions — fast typing no longer causes timeouts or disconnects
- Input bursts are coalesced into fewer round trips — lower latency under fast typing

### Authentication
- WebSocket connections now authenticate correctly for both SDK clients (header-based) and browser clients (message-based)

### Bug Fixes
- Fixed crash in envd when a process exits without a PTY
- Fixed goroutine leak on sandbox pause

### Others
- Version bump
""".strip()


def run(capsule: Capsule, cmd: str, cwd: str | None = None, timeout: int = 30) -> int:
    result = capsule.commands.run(cmd, cwd=cwd, timeout=timeout)
    if result.exit_code != 0:
        print(f"FAIL [{cmd.split()[0]}]: exit={result.exit_code}", file=sys.stderr)
        if result.stderr:
            print(result.stderr.strip(), file=sys.stderr)
        return result.exit_code
    print(f"OK   [{cmd.split()[0]}]")
    return 0


def get_tags(capsule: Capsule) -> tuple[str, str | None]:
    result = capsule.commands.run(
        f"cd {REPO_DIR} && git tag --sort=-version:refname",
        cwd=REPO_DIR,
        timeout=30,
    )
    if result.exit_code != 0:
        print(f"FAIL [git tag]: {result.stderr}", file=sys.stderr)
        sys.exit(1)
    tags = [t for t in result.stdout.strip().split("\n") if t]
    if not tags:
        print("No tags found", file=sys.stderr)
        sys.exit(1)
    current_tag = tags[0]
    previous_tag = tags[1] if len(tags) > 1 else None
    print(f"Current tag:  {current_tag}")
    print(f"Previous tag: {previous_tag}")
    return current_tag, previous_tag


def get_git_context(
    capsule: Capsule, current_tag: str, previous_tag: str | None
) -> tuple[str, str]:
    if previous_tag:
        # FIX: Removed '-n 2' to ensure we grab ALL commits between the two tags
        log_cmd = f"cd {REPO_DIR} && git log {previous_tag}..{current_tag} --pretty=format:'%s (%h)'"
    else:
        # Fallback to limit log size if this is the very first tag in the repo
        log_cmd = (
            f"cd {REPO_DIR} && git log {current_tag} --pretty=format:'%s (%h)' -n 50"
        )

    log_result = capsule.commands.run(log_cmd, cwd=REPO_DIR, timeout=30)
    if log_result.exit_code != 0:
        print(f"FAIL [git log]: {log_result.stderr}", file=sys.stderr)
        sys.exit(1)

    # git diff natively compares the entire tree state between tags
    if previous_tag:
        diff_cmd = f"cd {REPO_DIR} && git diff {previous_tag}..{current_tag} --stat"
    else:
        diff_cmd = f"cd {REPO_DIR} && git show {current_tag} --stat"

    diff_result = capsule.commands.run(diff_cmd, cwd=REPO_DIR, timeout=30)
    if diff_result.exit_code != 0:
        print(f"FAIL [git diff]: {diff_result.stderr}", file=sys.stderr)
        sys.exit(1)

    return log_result.stdout.strip(), diff_result.stdout.strip()


def generate_release_notes(
    capsule: Capsule,
    current_tag: str,
    git_log: str,
    git_diff: str,
    output_path: str,
    model: str,
) -> None:
    prompt = (
        f"You are writing release notes for version {current_tag} of a software project.\n\n"
        f"Here is what changed between the previous version and this one:\n\n"
        f"Commit messages:\n{git_log}\n\n"
        f"Files and areas that changed:\n{git_diff}\n\n"
        f"Write the release notes in plain, friendly language that any developer can understand "
        f"without deep knowledge of the codebase. Avoid jargon like 'goroutine', 'PTY', 'envd', "
        f"or internal function names — describe what the change means for the user instead. "
        f"Group related changes under headings that reflect what actually changed. "
        f"Only include sections that are relevant to these specific changes. "
        f"Start with a short one-line summary of what this release is about. "
        f"Keep each bullet point to one clear sentence.\n\n"
        f"Here is an example of the style to aim for — not a template to copy:\n\n"
        f"{RELEASE_NOTES_EXAMPLE}\n\n"
        f"You MUST start the document with `## What's New`\n"
        f"The very next line MUST be a single short summary sentence.\n"
        f"Output only the markdown. No intro, no explanation."
        f"CRITICAL: Do not output any conversational filler, acknowledgments, or thoughts "
        f"like 'Let me look at the changes'. Output absolutely nothing except the final markdown."
    )

    prompt_b64 = base64.b64encode(prompt.encode("utf-8")).decode("utf-8")

    write_prompt_cmd = f"echo '{prompt_b64}' | base64 -d > /tmp/oc_prompt.txt"

    result = capsule.commands.run(
        write_prompt_cmd,
        cwd=REPO_DIR,
        timeout=10,
    )
    if result.exit_code != 0:
        print(f"FAIL [write prompt]: {result.stderr}", file=sys.stderr)
        sys.exit(1)

    # FIX: Wrapper function to handle execution and authentication dynamically
    def run_opencode_with_model(target_model: str) -> int:
        env = ""
        if "zhipu" in target_model.lower():
            env = f"ZHIPU_API_KEY={os.environ.get('ZHIPU_API_KEY', '')}"

        cmd = (
            f"{env} "
            f"~/.opencode/bin/opencode run "
            f'"Read the attached file and generate the release notes. Output ONLY markdown." '
            f"--model {target_model} "
            f"--file /tmp/oc_prompt.txt "
            f"> {output_path}"
        )

        cmd_result = capsule.commands.run(cmd, cwd=REPO_DIR, timeout=120)

        if cmd_result.exit_code != 0:
            print(
                f"FAIL [opencode via {target_model}]: exit={cmd_result.exit_code}",
                file=sys.stderr,
            )
            print(f"STDOUT:\n{cmd_result.stdout}", file=sys.stderr)
            print(f"STDERR:\n{cmd_result.stderr}", file=sys.stderr)

        return cmd_result.exit_code

    # First attempt with the target model
    exit_status = run_opencode_with_model(model)

    # FIX: Catch failures (like Zhipu rate limits) and fallback to MiniMax
    if exit_status != 0:
        if "zhipu" in model.lower():
            print(
                "\n[!] Zhipu AI failed (likely rate-limited). Falling back to MiniMax...",
                file=sys.stderr,
            )
            fallback_model = "opencode/minimax-m2.5-free"
            exit_status = run_opencode_with_model(fallback_model)
            if exit_status != 0:
                print("FAIL: Fallback model also failed. Exiting.", file=sys.stderr)
                sys.exit(1)
        else:
            sys.exit(1)

    result = capsule.commands.run(f"cat {output_path}")
    print(result.stdout)
    if result.stderr:
        print(result.stderr)

    print(f"OK   [opencode] release notes written to {output_path}")


def download_release_notes(capsule: Capsule) -> None:
    local_path = os.path.normpath(LOCAL_OUTPUT)
    os.makedirs(os.path.dirname(local_path), exist_ok=True)

    print(f"Downloading release notes from capsule...")
    content = capsule.files.read_bytes(CAPSULE_OUTPUT)
    with open(local_path, "wb") as f:
        f.write(content)

    print(f"OK   [download] release notes → {local_path}")
    print(content.decode("utf-8", errors="replace"))


def main() -> None:
    model = os.environ.get("OPENCODE_MODEL", DEFAULT_MODEL)

    with Capsule(template="opencode", wait=True, vcpus=2, memory_mb=2048) as capsule:
        print(f"Capsule: {capsule.capsule_id}")

        capsule.git.clone(
            REPO_URL,
            REPO_DIR,
            username="tksadik92",
        )
        print("OK   [git clone]")

        current_tag, previous_tag = get_tags(capsule)
        git_log, git_diff = get_git_context(capsule, current_tag, previous_tag)

        # Note: This simply creates the directory string safely
        output_path = os.path.normpath(CAPSULE_OUTPUT)

        generate_release_notes(
            capsule,
            current_tag,
            git_log,
            git_diff,
            output_path,
            model,
        )

        download_release_notes(capsule)


if __name__ == "__main__":
    main()