"""Aider Gitea.

A code automation tool that integrates Gitea with AI assistants to automatically solve issues.

This program monitors your [Gitea](https://about.gitea.com/) repository for issues with the 'aider' label.
When such an issue is found, it:

1. Creates a new branch.
2. Invokes an AI assistant (Aider or Claude Code) to solve the issue using a Large-Language Model.
3. Runs tests and code quality checks.
4. Creates a pull request with the solution.

The tool automatically selects the appropriate AI assistant based on the specified model:
- **Aider**: Used for non-Anthropic models (e.g., GPT, Ollama, Gemini)
- **Claude Code**: Used for Anthropic models (e.g., Claude, Sonnet, Haiku, Opus)

Inspired by [the AI workflows](https://github.com/oscoreio/ai-workflows/)
project.

## Usage

An application token must be supplied for the `gitea_token` secret. This must
have the following permissions:

- `read:issue`: To be able to read issues on the specified repository.
- `write:repository`: To be able to create pull requests.
- `read:user`: Needed to iterate all user's repositories.

### Command Line

```bash
# Run with default settings (uses Aider)
python -m aider_gitea --aider-model gpt-4

# Use Claude Code with Anthropic models
python -m aider_gitea --aider-model claude-3-sonnet
python -m aider_gitea --aider-model claude-3-haiku
python -m aider_gitea --aider-model anthropic/claude-3-opus

# Use Aider with various models
python -m aider_gitea --aider-model gpt-4
python -m aider_gitea --aider-model ollama/llama3
python -m aider_gitea --aider-model gemini-pro

# Specify custom repository and owner
python -m aider_gitea --owner myorg --repo myproject --aider-model claude-3-sonnet

# Use a custom Gitea URL
python -m aider_gitea --gitea-url https://gitea.example.com --aider-model gpt-4

# Specify a different base branch
python -m aider_gitea --base-branch develop --aider-model claude-3-haiku
```

### AI Assistant Selection

The tool automatically routes to the appropriate AI assistant based on the model name:

**Claude Code Integration (Anthropic Models):**
- Model names containing: `claude`, `anthropic`, `sonnet`, `haiku`, `opus`
- Examples: `claude-3-sonnet`, `claude-3-haiku`, `anthropic/claude-3-opus`
- Requires: `ANTHROPIC_API_KEY` environment variable

**Aider Integration (All Other Models):**
- Any model not matching Anthropic patterns
- Examples: `gpt-4`, `ollama/llama3`, `gemini-pro`, `mistral-7b`
- Requires: `LLM_API_KEY` environment variable

### Python API

```python
from aider_gitea import solve_issue_in_repository, create_code_solver
from pathlib import Path
import argparse

# Solve an issue programmatically with automatic AI assistant selection
repository_config = RepositoryConfig(
    gitea_url="https://gitea.example.com",
    owner="myorg",
    repo="myproject",
    base_branch="main"
)

# Set the model to control which AI assistant is used
import aider_gitea
aider_gitea.CODE_MODEL = "claude-3-sonnet"  # Will use Claude Code
# aider_gitea.CODE_MODEL = "gpt-4"          # Will use Aider

code_solver = create_code_solver()  # Automatically selects based on model

solve_issue_in_repository(
    repository_config,
    Path("/path/to/repo"),
    "issue-123-fix-bug",
    "Fix critical bug",
    "The application crashes when processing large files",
    "123",
    gitea_client,
    code_solver
)
```

### Environment Configuration

The tool uses environment variables for sensitive information:

**Required for all setups:**
- `GITEA_TOKEN`: Your Gitea API token

**For Aider (non-Anthropic models):**
- `LLM_API_KEY`: API key for the language model (OpenAI, Ollama, etc.)

**For Claude Code (Anthropic models):**
- `ANTHROPIC_API_KEY`: Your Anthropic API key for Claude models

### Model Examples

**Anthropic Models (→ Claude Code):**
```bash
--aider-model claude-3-sonnet
--aider-model claude-3-haiku
--aider-model claude-3-opus
--aider-model anthropic/claude-3-sonnet
```

**Non-Anthropic Models (→ Aider):**
```bash
--aider-model gpt-4
--aider-model gpt-3.5-turbo
--aider-model ollama/llama3
--aider-model ollama/codellama
--aider-model gemini-pro
--aider-model mistral-7b
```
```
"""

import dataclasses
import logging
import re
import subprocess
import sys
import tempfile
from pathlib import Path

from . import secrets
from ._version import __version__  # noqa: F401
from .seen_issues_db import SeenIssuesDB as SeenIssuesDB

logger = logging.getLogger(__name__)

# Constants for common configuration values
DEFAULT_TIMEOUT_SECONDS = 10_000
DEFAULT_DAEMON_INTERVAL_SECONDS = 300
DEFAULT_BASE_BRANCH = 'main'
DEFAULT_PR_CONTEXT_LINES = 3
DEFAULT_LOG_TAIL_LINES = 100
DEFAULT_MINIMUM_PYTHON_VERSION = '3.9'

# Git and repository constants
INITIAL_RUFF_COMMIT_MESSAGE = 'Initial ruff pass'
RUFF_CLEANUP_COMMIT_MESSAGE = 'Ruff after'
PIPELINE_RESOLUTION_COMMIT_PREFIX = 'Resolve pipeline'
COMMENT_RESOLUTION_COMMIT_PREFIX = 'Resolve comment'

# API and model configuration constants
DEFAULT_ANTHROPIC_INDICATORS = [
    'claude',
    'anthropic',
    'sonnet',
    'haiku',
    'opus',
]

# Error messages as constants
ERROR_GITEA_URL_EMPTY = 'gitea_url cannot be empty'
ERROR_OWNER_EMPTY = 'owner cannot be empty'
ERROR_REPO_EMPTY = 'repo cannot be empty'
ERROR_BASE_BRANCH_EMPTY = 'base_branch cannot be empty'
ERROR_GITEA_URL_API_SUFFIX = "gitea_url should not include '/api/v1' suffix"
ERROR_ISSUE_PARAMS_TYPE = 'Both issue_number and issue_title must be strings'
ERROR_ISSUE_NUMBER_EMPTY = 'Issue number cannot be empty'
ERROR_MODEL_TYPE = 'Model must be a string, got {}'


@dataclasses.dataclass(frozen=True)
class RepositoryConfig:
    """Configuration for a repository to process issues from.

    Attributes:
        gitea_url: Base URL for the Gitea instance (without '/api/v1').
        owner: Owner/organization name of the repository.
        repo: Repository name.
        base_branch: Base branch name to create feature branches from.
    """

    gitea_url: str
    owner: str
    repo: str
    base_branch: str

    def __post_init__(self):
        """Validate repository configuration fields."""
        if not self.gitea_url or not self.gitea_url.strip():
            raise ValueError(ERROR_GITEA_URL_EMPTY)
        if not self.owner or not self.owner.strip():
            raise ValueError(ERROR_OWNER_EMPTY)
        if not self.repo or not self.repo.strip():
            raise ValueError(ERROR_REPO_EMPTY)
        if not self.base_branch or not self.base_branch.strip():
            raise ValueError(ERROR_BASE_BRANCH_EMPTY)

        # Ensure gitea_url doesn't end with /api/v1 (common mistake)
        if self.gitea_url.rstrip('/').endswith('/api/v1'):
            raise ValueError(ERROR_GITEA_URL_API_SUFFIX)

    def repo_url(self) -> str:
        """Generate the git clone URL for this repository."""
        return f'{self.gitea_url}:{self.owner}/{self.repo}.git'.replace(
            'https://',
            'git@',
        )


@dataclasses.dataclass(frozen=True)
class IssueResolution:
    success: bool
    pull_request_url: str | None = None
    pull_request_id: int | None = None

    def __post_init__(self):
        assert self.pull_request_id is None or isinstance(self.pull_request_id, int)
        assert self.pull_request_url is None or isinstance(self.pull_request_url, str)


def generate_branch_name(issue_number: str, issue_title: str) -> str:
    """Create a branch name by sanitizing the issue title.

    Non-alphanumeric characters (except spaces) are removed,
    the text is lowercased, and spaces are replaced with dashes.

    Args:
        issue_number: The issue number to include in the branch name.
        issue_title: The issue title to sanitize and include in the branch name.

    Returns:
        A sanitized branch name combining the issue number and title.

    Raises:
        ValueError: If issue_number is empty or invalid.
        TypeError: If arguments are not strings.
    """
    if not isinstance(issue_number, str) or not isinstance(issue_title, str):
        raise TypeError(ERROR_ISSUE_PARAMS_TYPE)

    if not issue_number.strip():
        raise ValueError(ERROR_ISSUE_NUMBER_EMPTY)

    # Sanitize the title, handling empty titles gracefully
    sanitized_title = issue_title.strip() if issue_title else 'untitled'
    sanitized = re.sub(r'[^0-9a-zA-Z ]+', '', sanitized_title)
    parts = ['issue', str(issue_number), *sanitized.lower().split()]
    return '-'.join(parts)


def bash_cmd(*commands: str) -> str:
    commands = ('set -e', *commands)
    return 'bash -c "' + ';'.join(commands) + '"'


AIDER_TEST = bash_cmd(
    'echo "Setting up virtual environment"',
    'virtualenv venv',
    'echo "Activating virtual environment"',
    'source venv/bin/activate',
    'echo "Installing package"',
    'pip install -e .',
    'echo "Testing package"',
    'pytest test',
)

RUFF_FORMAT_AND_AUTO_FIX = bash_cmd(
    'ruff format --silent',
    'ruff check --fix --ignore RUF022 --ignore PGH004 --silent',
    'ruff format --silent',
    'ruff check --fix --ignore RUF022 --ignore PGH004 --silent',
)

AIDER_LINT = bash_cmd(
    RUFF_FORMAT_AND_AUTO_FIX,
    'ruff format',
    'ruff check --ignore RUF022 --ignore PGH004',
)


LLM_MESSAGE_FORMAT = """{issue}

Go ahead with the changes you deem appropriate without waiting for explicit approval.

Do not draft changes beforehand; produce changes only once prompted for a specific file.
"""

CLAUDE_CODE_MESSAGE_FORMAT = """{issue}

Please fix this issue by making the necessary code changes. Follow these guidelines:
1. Run tests after making changes to ensure they pass
2. Follow existing code style and conventions
3. Make minimal, focused changes to address the issue
4. Commit your changes with a descriptive message

The test command for this project is: {test_command}
The lint command for this project is: {lint_command}
"""

CODE_MODEL = None
EVALUATOR_MODEL = None

MODEL_EDIT_MODES = {
    'ollama/qwen3:32b': 'diff',
    'ollama/hf.co/unsloth/Qwen3-30B-A3B-GGUF:Q4_K_M': 'diff',
}


def run_post_solver_cleanup(repository_path: Path, solver_name: str) -> None:
    """Run standard code quality fixes and commit changes after a code solver.

    Args:
        repository_path: Path to the repository
        solver_name: Name of the solver (for commit message)
    """
    # Auto-fix standard code quality stuff
    run_cmd(['bash', '-c', RUFF_FORMAT_AND_AUTO_FIX], repository_path, check=False)
    run_cmd(['git', 'add', '.'], repository_path)
    run_cmd(
        ['git', 'commit', '-m', f'{RUFF_CLEANUP_COMMIT_MESSAGE} {solver_name}'],
        repository_path,
        check=False,
    )


@dataclasses.dataclass(frozen=True)
class CodeSolverStrategy:
    """Base interface for code solving strategies."""

    def solve_issue_round(self, repository_path: Path, issue_content: str) -> bool:
        """Attempt to solve an issue in a single round.

        Args:
            repository_path: Path to the repository
            issue_content: The issue description to solve

        Returns:
            True if the solution round completed without crashing, False otherwise
        """
        raise NotImplementedError


@dataclasses.dataclass(frozen=True)
class AiderCodeSolver(CodeSolverStrategy):
    """Code solver that uses Aider for issue resolution."""

    def _create_aider_command(self, issue: str) -> list[str]:
        """Create the Aider command with all necessary flags."""
        l = [
            'aider',
            '--chat-language',
            'english',
            '--no-stream',
            '--no-analytics',
            '--test-cmd',
            AIDER_TEST,
            '--lint-cmd',
            AIDER_LINT,
            '--auto-test',
            '--no-auto-lint',
            '--yes',
            '--disable-playwright',
            '--timeout',
            str(DEFAULT_TIMEOUT_SECONDS),
        ]

        if edit_format := MODEL_EDIT_MODES.get(CODE_MODEL):
            l.append('--edit-format')
            l.append(edit_format)
        del edit_format

        for key in secrets.llm_api_keys():
            l += ['--api-key', key]

        if False:
            l.append('--read')
            l.append('CONVENTIONS.md')

        if True:
            l.append('--cache-prompts')

        if False:
            l.append('--architect')

        if CODE_MODEL:
            l.append('--model')
            l.append(CODE_MODEL)

            if CODE_MODEL.startswith('ollama/') and False:
                l.append('--auto-lint')

        if True:
            l.append('--message')
            l.append(LLM_MESSAGE_FORMAT.format(issue=issue))

        return l

    def solve_issue_round(self, repository_path: Path, issue_content: str) -> bool:
        """Solve an issue using Aider."""
        # Primary Aider command
        aider_command = self._create_aider_command(issue_content)
        aider_did_not_crash = run_cmd(
            aider_command,
            cwd=repository_path,
            check=False,
        )
        if not aider_did_not_crash:
            return aider_did_not_crash

        # Run post-solver cleanup
        run_post_solver_cleanup(repository_path, 'aider')

        return True


@dataclasses.dataclass(frozen=True)
class ClaudeCodeSolver(CodeSolverStrategy):
    """Code solver that uses Claude Code for issue resolution."""

    def _create_claude_command(self, issue: str) -> list[str]:
        """Create the Claude Code command for programmatic use."""
        cmd = [
            'claude',
            '-p',
            '--output-format',
            'stream-json',
            #'--max-turns', '100',
            '--debug',
            '--verbose',
            '--dangerously-skip-permissions',
        ]

        if CODE_MODEL:
            cmd.extend(['--model', CODE_MODEL])

        cmd.append(issue)
        return cmd

    def solve_issue_round(self, repository_path: Path, issue_content: str) -> bool:
        """Solve an issue using Claude Code."""
        # Prepare the issue prompt for Claude Code
        enhanced_issue = CLAUDE_CODE_MESSAGE_FORMAT.format(
            issue=issue_content,
            test_command=AIDER_TEST,
            lint_command=AIDER_LINT,
        )

        # Create Claude Code command
        claude_command = self._create_claude_command(enhanced_issue)

        # Run Claude Code
        run_cmd(
            claude_command,
            cwd=repository_path,
            check=False,
        )

        # Run post-solver cleanup
        run_post_solver_cleanup(repository_path, 'Claude Code')

        return True


def is_anthropic_model(model: str) -> bool:
    """Check if the model string indicates an Anthropic/Claude model.

    Args:
        model: The model name/identifier to check.

    Returns:
        True if the model appears to be an Anthropic model, False otherwise.

    Raises:
        TypeError: If model is not a string.
    """
    if model is None:
        return False

    if not isinstance(model, str):
        raise TypeError(ERROR_MODEL_TYPE.format(type(model)))

    if not model.strip():
        return False

    anthropic_indicators = DEFAULT_ANTHROPIC_INDICATORS

    model_lower = model.lower()
    return any(indicator in model_lower for indicator in anthropic_indicators)


def create_code_solver() -> CodeSolverStrategy:
    """Create the appropriate code solver based on the configured model."""
    if is_anthropic_model(CODE_MODEL):
        return ClaudeCodeSolver()
    else:
        return AiderCodeSolver()


def get_commit_messages(cwd: Path, base_branch: str, current_branch: str) -> list[str]:
    """Get commit messages between base branch and current branch.

    Args:
        cwd: The current working directory (repository path).
        base_branch: The name of the base branch to compare against.
        current_branch: The name of the current branch to check for commits.

    Returns:
        A string containing all commit messages, one per line.
    """
    try:
        result = subprocess.run(
            ['git', 'log', f'{base_branch}..{current_branch}', '--pretty=format:%s'],
            check=True,
            cwd=cwd,
            capture_output=True,
            text=True,
        )
        return list(reversed(result.stdout.strip().split('\n')))
    except subprocess.CalledProcessError:
        logger.exception(f'Failed to get commit messages on branch {current_branch}')
        return []


def get_diff(cwd: Path, base_branch: str, current_branch: str) -> str:
    result = subprocess.run(
        ['git', 'diff', f'{base_branch}..{current_branch}', '--pretty=format:%s'],
        check=True,
        cwd=cwd,
        capture_output=True,
        text=True,
    )
    return result.stdout.strip()


def push_changes(
    repository_config: RepositoryConfig,
    cwd: Path,
    branch_name: str,
    issue_number: str,
    issue_title: str,
    gitea_client,
) -> IssueResolution:
    # Check if there are any commits on the branch before pushing
    if not has_commits_on_branch(cwd, repository_config.base_branch, branch_name):
        logger.info('No commits made on branch %s, skipping push', branch_name)
        return IssueResolution(False)

    # Get commit messages for PR description
    commit_messages = get_commit_messages(
        cwd,
        repository_config.base_branch,
        branch_name,
    )
    description = f'This pull request resolves #{issue_number}\n\n'

    if commit_messages:
        description += '## Commit Messages\n\n'
        for message in commit_messages:
            description += f'- {message}\n'

    # First push the branch without creating a PR
    cmd = ['git', 'push', 'origin', branch_name, '--force']
    run_cmd(cmd, cwd)

    # Then create the PR with the aider label
    pr_response = gitea_client.create_pull_request(
        owner=repository_config.owner,
        repo=repository_config.repo,
        title=issue_title,
        body=description,
        head=branch_name,
        base=repository_config.base_branch,
        labels=['aider'],
    )

    # Extract PR number and URL if available
    return IssueResolution(
        True,
        pr_response.get('html_url'),
        int(pr_response.get('number')),
    )


def has_commits_on_branch(cwd: Path, base_branch: str, current_branch: str) -> bool:
    """Check if there are any commits on the current branch that aren't in the base branch.

    Args:
        cwd: The current working directory (repository path).
        base_branch: The name of the base branch to compare against.
        current_branch: The name of the current branch to check for commits.

    Returns:
        True if there are commits on the current branch not in the base branch, False otherwise.
    """
    try:
        commit_messages = get_commit_messages(cwd, base_branch, current_branch)
        return bool(list(commit_messages))
    except Exception:
        logger.exception('Failed to check commits on branch %s', current_branch)
        return False


def run_cmd(cmd: list[str], cwd: Path | None = None, check=True) -> bool:
    """Run a shell command and return its success status.

    Args:
        cmd: The command to run as a list of strings.
        cwd: The directory to run the command in.
        check: Whether to raise an exception if the command fails.

    Returns:
        True if the command succeeded, False otherwise.
    """
    result = subprocess.run(cmd, check=check, cwd=cwd)
    return result.returncode == 0


def remove_thinking_tokens(text: str) -> str:
    text = re.sub(r'^\s*<think>.*?</think>', '', text, flags=re.MULTILINE | re.DOTALL)
    text = text.strip()
    return text


assert remove_thinking_tokens('<think>Hello</think>\nWorld\n') == 'World'
assert remove_thinking_tokens('<think>\nHello\n</think>\nWorld\n') == 'World'
assert remove_thinking_tokens('\n<think>\nHello\n</think>\nWorld\n') == 'World'


def run_ollama(cwd: Path, texts: list[str]) -> str:
    cmd = ['ollama', 'run', EVALUATOR_MODEL.removeprefix('ollama/')]
    process = subprocess.Popen(
        cmd,
        cwd=cwd,
        stdin=subprocess.PIPE,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        text=True,
    )
    stdout, stderr = process.communicate('\n'.join(texts))
    stdout = remove_thinking_tokens(stdout)
    return stdout


def parse_yes_no_answer(text: str) -> bool | None:
    interword = '\n \t.,?-'
    text = text.lower().strip(interword)
    words = text.split(interword)
    if words[-1] in {'yes', 'agree'}:
        return True
    if words[-1] in {'no', 'disagree'}:
        return False
    return None


assert parse_yes_no_answer('Yes.') == True
assert parse_yes_no_answer('no') == False


def run_ollama_and_get_yes_or_no(cwd, initial_texts: list[str]) -> bool:
    texts = list(initial_texts)
    texts.append('Think through your answer.')
    while True:
        response = run_ollama(cwd, texts)
        yes_or_no = parse_yes_no_answer(response)
        if yes_or_no is not None:
            return yes_or_no
        else:
            texts.append(response)
            texts.append('Please answer either "yes" or "no".')


def verify_solution(repository_path: Path, issue_content: str) -> bool:
    if not EVALUATOR_MODEL:
        return True

    summary = run_ollama(
        repository_path,
        [
            'Concisely summarize following changeset',
            get_diff(repository_path, 'main', 'HEAD'),
        ],
    )

    return run_ollama_and_get_yes_or_no(
        repository_path,
        [
            'Does this changeset accomplish the entire task?',
            '# Change set',
            summary,
            '# Issue',
            issue_content,
        ],
    )


def get_head_commit_hash(repository_path: Path) -> str:
    return subprocess.run(
        ['git', 'rev-parse', 'HEAD'],
        check=True,
        cwd=repository_path,
        capture_output=True,
        text=True,
    ).stdout.strip()


def solve_issue_in_repository(
    repository_config: RepositoryConfig,
    repository_path: Path,
    branch_name: str,
    issue_title: str,
    issue_description: str,
    issue_number: str,
    gitea_client,
    code_solver: CodeSolverStrategy,
) -> IssueResolution:
    logger.info('### %s #####', issue_title)

    # Setup repository
    run_cmd(['git', 'clone', repository_config.repo_url(), repository_path])
    run_cmd(['bash', '-c', AIDER_TEST], repository_path)
    run_cmd(['git', 'checkout', repository_config.base_branch], repository_path)
    run_cmd(['git', 'checkout', '-b', branch_name], repository_path)

    # Run initial ruff pass before code solver
    run_cmd(['bash', '-c', RUFF_FORMAT_AND_AUTO_FIX], repository_path, check=False)
    run_cmd(['git', 'add', '.'], repository_path)
    run_cmd(
        ['git', 'commit', '-m', INITIAL_RUFF_COMMIT_MESSAGE],
        repository_path,
        check=False,
    )

    # Run code solver
    issue_content = f'# {issue_title}\n{issue_description}'

    while True:
        # Save the commit hash after ruff but before code solver
        pre_aider_commit = get_head_commit_hash(repository_path)

        # Run code solver
        solver_did_not_crash = code_solver.solve_issue_round(
            repository_path,
            issue_content,
        )
        if not solver_did_not_crash:
            logger.error('Code solver invocation failed for issue #%s', issue_number)
            return IssueResolution(False)

        # Check if solver made any changes beyond the initial ruff pass
        if not has_commits_on_branch(repository_path, pre_aider_commit, 'HEAD'):
            logger.error(
                'Code solver did not make any changes beyond the initial ruff pass for issue #%s',
                issue_number,
            )
            return IssueResolution(False)

        # Push changes and create/update the pull request on every iteration
        resolution = push_changes(
            repository_config,
            repository_path,
            branch_name,
            issue_number,
            issue_title,
            gitea_client,
        )
        if not resolution.success:
            return resolution

        # Verify whether this is a satisfactory solution
        if verify_solution(repository_path, issue_content):
            return resolution


def solve_issues_in_repository(
    repository_config: RepositoryConfig,
    client,
    seen_issues_db,
):
    """Process all open issues with the 'aider' label.

    Args:
        repository_config: Command line arguments.
        client: The Gitea client instance.
        seen_issues_db: Database of previously processed issues.
    """
    try:
        issues = client.get_issues(repository_config.owner, repository_config.repo)
    except Exception:
        logger.exception('Failed to retrieve issues')
        sys.exit(1)

    if not issues:
        logger.info('No issues found for %s', repository_config.repo)
        return

    for issue in issues:
        issue_url = issue.get('web_url')
        issue_number = issue.get('number')
        issue_description = issue.get('body', '')
        title = issue.get('title', f'Issue {issue_number}')
        if seen_issues_db.has_seen(issue_url):
            logger.info('Skipping already processed issue #%s: %s', issue_number, title)
        else:
            branch_name = generate_branch_name(issue_number, title)
            code_solver = create_code_solver()
            with tempfile.TemporaryDirectory() as repository_path:
                issue_resolution = solve_issue_in_repository(
                    repository_config,
                    Path(repository_path),
                    branch_name,
                    title,
                    issue_description,
                    issue_number,
                    client,
                    code_solver,
                )
            seen_issues_db.mark_as_seen(issue_url, str(issue_number))
            seen_issues_db.update_pr_info(
                issue_url,
                issue_resolution.pull_request_id,
                issue_resolution.pull_request_url,
            )
            logger.info(
                'Stored PR #%s information for issue #%s',
                issue_resolution.pull_request_id,
                issue_number,
            )

        # TODO: PR comment handling disabled for now due to missing functionality
        if False:
            # Handle unresolved pull request comments
            handle_pr_comments(
                repository_config,
                issue_resolution.pull_request_id,
                branch_name,
                Path(repository_path),
                client,
                seen_issues_db,
                issue_url,
                code_solver,
            )

            # Handle failing pipelines
            handle_failing_pipelines(
                repository_config,
                issue_resolution.pull_request_id,
                branch_name,
                Path(repository_path),
                client,
                code_solver,
            )


def handle_pr_comments(
    repository_config,
    pr_number: int,
    branch_name,
    repository_path,
    client,
    seen_issues_db,
    issue_url,
    code_solver: CodeSolverStrategy,
):
    """Fetch unresolved PR comments and resolve them via code solver."""
    comments = client.get_pull_request_comments(
        repository_config.owner,
        repository_config.repo,
        pr_number,
    )
    for comment in comments:
        path = comment.get('path')
        line = comment.get('line') or comment.get('position') or 0

        if not path:
            logger.warning('Comment has no path, skipping')
            continue

        file_path = repository_path / path
        try:
            lines = file_path.read_text(encoding='utf-8').splitlines()
            start = max(0, line - DEFAULT_PR_CONTEXT_LINES)
            end = min(len(lines), line + DEFAULT_PR_CONTEXT_LINES - 1)
            context = '\n'.join(lines[start:end])
        except FileNotFoundError:
            logger.warning('File %s not found for comment context', path)
            context = f'File {path} not found'
        except UnicodeDecodeError as e:
            logger.warning('Failed to decode file %s: %s', path, e)
            context = f'Unable to read file {path} (encoding issue)'
        except Exception as e:
            logger.warning('Failed to read file %s for comment context: %s', path, e)
            context = f'Error reading file {path}'
        body = comment.get('body', '')
        issue = (
            f'Resolve the following reviewer comment:\n{body}\n\n'
            f'File: {path}\n\nContext:\n{context}'
        )
        # invoke code solver on the comment context
        code_solver.solve_issue_round(repository_path, issue)
        # commit and push changes for this comment
        run_cmd(['git', 'add', path], repository_path, check=False)
        run_cmd(
            [
                'git',
                'commit',
                '-m',
                f'{COMMENT_RESOLUTION_COMMIT_PREFIX} {comment.get("id")}',
            ],
            repository_path,
            check=False,
        )
        run_cmd(['git', 'push', 'origin', branch_name], repository_path, check=False)


def handle_failing_pipelines(
    repository_config: RepositoryConfig,
    pr_number: str,
    branch_name: str,
    repository_path: Path,
    client,
    code_solver: CodeSolverStrategy,
) -> None:
    """Fetch failing pipelines for the given PR and resolve them via code solver."""
    while True:
        failed_runs = client.get_failed_pipelines(
            repository_config.owner,
            repository_config.repo,
            pr_number,
        )
        if not failed_runs:
            break
        for run_id in failed_runs:
            log = client.get_pipeline_log(
                repository_config.owner,
                repository_config.repo,
                run_id,
            )
            lines = log.strip().split('\n')
            context = '\n'.join(lines[-DEFAULT_LOG_TAIL_LINES:])
            issue = f'Resolve the following failing pipeline run {run_id}:\n\n{context}'
            code_solver.solve_issue_round(repository_path, issue)
            run_cmd(['git', 'add', '.'], repository_path, check=False)
            run_cmd(
                [
                    'git',
                    'commit',
                    '-m',
                    f'{PIPELINE_RESOLUTION_COMMIT_PREFIX} {run_id}',
                ],
                repository_path,
                check=False,
            )
            run_cmd(
                ['git', 'push', 'origin', branch_name],
                repository_path,
                check=False,
            )