# Requirements Document

## Introduction

Phase 3 of mypylogger v0.2.0 focuses on implementing automated quality and deployment pipelines using GitHub Actions. This phase establishes comprehensive CI/CD workflows that enforce quality gates, automate testing, and provide a foundation for reliable software delivery. The system will ensure that all code changes meet quality standards before integration and provide automated mechanisms for package distribution.

## Glossary

- **GitHub_Actions**: GitHub's built-in CI/CD platform for automating workflows
- **Quality_Gate**: Automated checks that must pass before code integration
- **Workflow**: A configurable automated process made up of one or more jobs
- **Job**: A set of steps that execute on the same runner
- **Runner**: A server that runs workflows when triggered
- **Branch_Protection**: GitHub feature that enforces rules before merging pull requests
- **PyPI_Publishing**: Process of uploading Python packages to the Python Package Index
- **Test_Matrix**: Configuration to run tests across multiple Python versions or environments
- **Artifact**: Files produced by workflow jobs that can be shared between jobs or downloaded
- **Trusted_Publishing**: PyPI's built-in OIDC authentication for secure publishing from GitHub Actions
- ~~**Status_Badge**: Dynamic image that displays real-time status of CI/CD workflows in project documentation~~ (Badge system removed)
- ~~**Coverage_Badge**: Dynamic badge showing current test coverage percentage from CI pipeline~~ (Badge system removed)
- ~~**Shield_Badge**: Standardized badge format using shields.io for consistent visual presentation~~ (Badge system removed)

## Requirements

### Requirement 1

**User Story:** As a project maintainer, I want automated quality checks on every code change, so that code quality standards are consistently enforced without manual intervention.

#### Acceptance Criteria

1. WHEN a pull request is created, THE GitHub_Actions SHALL execute the complete test suite with coverage reporting
2. WHEN a pull request is created, THE GitHub_Actions SHALL run linting checks using ruff and fail if any errors are found
3. WHEN a pull request is created, THE GitHub_Actions SHALL run type checking using mypy and fail if any errors are found
4. WHEN a pull request is created, THE GitHub_Actions SHALL verify code formatting compliance using ruff format --check
5. THE GitHub_Actions SHALL require 95% minimum test coverage for all pull requests

### Requirement 2

**User Story:** As a developer, I want tests to run across multiple Python versions, so that compatibility is verified before code integration.

#### Acceptance Criteria

1. THE GitHub_Actions SHALL execute tests against Python 3.8, 3.9, 3.10, 3.11, and 3.12
2. WHEN any Python version test fails, THE GitHub_Actions SHALL mark the workflow as failed
3. THE GitHub_Actions SHALL use a test matrix strategy to run versions in parallel
4. THE GitHub_Actions SHALL cache dependencies between workflow runs to improve performance

### Requirement 3

**User Story:** As a project maintainer, I want branch protection rules enforced, so that only quality-verified code can be merged to the main branch.

#### Acceptance Criteria

1. THE GitHub_Actions SHALL prevent direct pushes to the main branch
2. THE GitHub_Actions SHALL require all quality checks to pass before allowing pull request merges
3. THE GitHub_Actions SHALL require at least one approving review for pull request merges
4. THE GitHub_Actions SHALL require branches to be up-to-date before merging
5. THE GitHub_Actions SHALL enforce status checks for all defined quality gates

### Requirement 4

**User Story:** As a project maintainer, I want automated package publishing capabilities, so that releases can be distributed to PyPI efficiently and reliably.

#### Acceptance Criteria

1. THE GitHub_Actions SHALL provide a manual workflow trigger for PyPI publishing
2. WHEN the publish workflow is triggered, THE GitHub_Actions SHALL build the package using standard Python build tools
3. WHEN the publish workflow is triggered, THE GitHub_Actions SHALL run all quality checks before publishing
4. THE GitHub_Actions SHALL authenticate with PyPI using secure token-based authentication
5. THE GitHub_Actions SHALL upload the built package to PyPI only after all checks pass

### Requirement 5

**User Story:** As a developer, I want fast feedback on code changes, so that I can quickly identify and fix issues during development.

#### Acceptance Criteria

1. THE GitHub_Actions SHALL complete quality check workflows in under 5 minutes for typical changes
2. THE GitHub_Actions SHALL provide clear, actionable error messages when workflows fail
3. THE GitHub_Actions SHALL cache Python dependencies and virtual environments between runs
4. THE GitHub_Actions SHALL run the most critical checks first to fail fast on obvious issues
5. THE GitHub_Actions SHALL display workflow status and results prominently in pull requests

### Requirement 6

**User Story:** As a project maintainer, I want security scanning integrated into the CI pipeline, so that vulnerabilities are detected automatically and no security issues exist in the codebase.

#### Acceptance Criteria

1. THE GitHub_Actions SHALL scan dependencies for known security vulnerabilities using GitHub security scanning
2. THE GitHub_Actions SHALL scan code for security vulnerabilities using GitHub CodeQL analysis
3. WHEN any security vulnerabilities are detected, THE GitHub_Actions SHALL fail the workflow and prevent code integration
4. THE GitHub_Actions SHALL require zero security issues found before allowing pull request merges
5. THE GitHub_Actions SHALL scan both direct and transitive dependencies for vulnerabilities
6. THE GitHub_Actions SHALL provide detailed security reports when vulnerabilities are detected

### Requirement 7

**User Story:** As a developer, I want consistent development environment setup, so that local development matches CI environment behavior.

#### Acceptance Criteria

1. THE GitHub_Actions SHALL use the same UV package manager used in local development
2. THE GitHub_Actions SHALL use the same Python versions available for local development
3. THE GitHub_Actions SHALL execute the same quality check commands used in local development
4. THE GitHub_Actions SHALL use the same dependency versions specified in uv.lock
5. THE GitHub_Actions SHALL exclude UV cache directories from version control to prevent repository bloat
6. THE GitHub_Actions SHALL document any environment-specific configurations or requirements

### Requirement 8

**User Story:** As a developer, I want to identify and resolve CI/CD workflow errors systematically, so that I can ensure reliable automated quality gates.

#### Acceptance Criteria

1. WHEN a workflow run fails, THE GitHub_Actions SHALL provide detailed error analysis with specific failure causes
2. WHEN workflow syntax errors are found, THE GitHub_Actions SHALL provide specific line-by-line error details
3. WHEN dependency issues cause failures, THE GitHub_Actions SHALL identify problematic packages and versions
4. WHEN security scan failures occur, THE GitHub_Actions SHALL provide vulnerability details and remediation steps
5. WHERE workflow monitoring is available, THE GitHub_Actions SHALL provide performance metrics and failure rates

### Requirement 9

**User Story:** As a developer, I want to validate and prevent future CI/CD failures, so that I can maintain reliable development workflows.

#### Acceptance Criteria

1. WHEN workflow fixes are applied, THE GitHub_Actions SHALL verify syntax correctness before execution
2. WHEN configuration changes are made, THE GitHub_Actions SHALL validate against GitHub Actions schema
3. WHEN workflows are triggered, THE GitHub_Actions SHALL monitor execution status and provide feedback
4. WHEN workflow improvements are implemented, THE GitHub_Actions SHALL document best practices for maintenance
5. IF preventive measures are implemented, THEN THE GitHub_Actions SHALL reduce workflow failure rates by 80%

### ~~Requirement 10~~ (Badge system removed)

~~**User Story:** As a project maintainer, I want live status badges in the README, so that users can immediately see the project's build status, code quality, and reliability metrics.~~

#### ~~Acceptance Criteria~~ (No longer applicable)

1. ~~THE project README SHALL display a build status badge showing current CI/CD workflow status~~
2. ~~THE project README SHALL display a test coverage badge showing current coverage percentage from CI pipeline~~
3. ~~THE project README SHALL display a security status badge showing vulnerability scan results~~
4. ~~THE project README SHALL display a code style badge showing linting and formatting compliance status~~
5. ~~THE Status_Badge links SHALL connect directly to the corresponding GitHub Actions workflow runs~~

### ~~Requirement 11~~ (Badge system removed)

~~**User Story:** As a potential user, I want to see project quality indicators at a glance, so that I can quickly assess the project's maturity and reliability.~~

#### ~~Acceptance Criteria~~ (No longer applicable)

1. ~~THE project README SHALL display a Python version compatibility badge showing supported versions~~
2. ~~THE project README SHALL display a license badge showing the project's license type~~
3. ~~THE project README SHALL display a PyPI downloads badge showing package adoption metrics~~
4. ~~THE project README SHALL display a PyPI version badge showing the latest published version~~
5. ~~THE Shield_Badge format SHALL be used for consistent visual presentation across all badges~~

### ~~Requirement 12~~ (Badge system removed)

~~**User Story:** As a developer, I want badge data automatically updated by CI/CD workflows, so that status information is always current without manual maintenance.~~

#### ~~Acceptance Criteria~~ (No longer applicable)

1. ~~WHEN CI/CD workflows complete, THE GitHub_Actions SHALL update coverage data for badge generation~~
2. ~~WHEN security scans complete, THE GitHub_Actions SHALL update security status for badge display~~
3. ~~WHEN quality checks complete, THE GitHub_Actions SHALL update code style status for badge display~~
4. ~~THE Coverage_Badge SHALL reflect the exact coverage percentage from the most recent successful test run~~
5. ~~THE badge data SHALL be updated within 5 minutes of workflow completion~~

### Requirement 13

**User Story:** As a developer, I want the PyPI publishing workflow to use trusted publishing, so that packages can be published securely without managing credentials.

#### Acceptance Criteria

1. WHEN the PyPI publishing workflow executes, THE GitHub_Actions SHALL use PyPI trusted publishing for authentication
2. THE GitHub_Actions SHALL configure proper OIDC permissions (id-token: write, contents: read)
3. WHEN the publishing step runs, THE GitHub_Actions SHALL complete successfully using pypa/gh-action-pypi-publish
4. THE GitHub_Actions SHALL validate that all required trusted publishing parameters are present
5. THE GitHub_Actions SHALL provide clear error messages if trusted publishing configuration is missing or invalid

### Requirement 16

**User Story:** As a developer, I want consistent Git workflow practices enforced in CI/CD, so that repository history remains clean and merge conflicts are minimized.

#### Acceptance Criteria

1. WHEN pushing changes to remote repository, THE GitHub_Actions SHALL require git rebase from main branch before push operations
2. WHEN automated workflows commit changes, THE GitHub_Actions SHALL use git pull --rebase origin main to sync with latest changes
3. WHEN merge conflicts occur during rebase, THE GitHub_Actions SHALL provide clear resolution guidance and fail gracefully
4. THE GitHub_Actions SHALL enforce linear commit history by preventing merge commits in automated workflows
5. THE GitHub_Actions SHALL document Git workflow best practices for maintaining clean repository history

**IMPLEMENTATION NOTE**: This requirement is fully addressed by the Rebase Fix Phase, which implements comprehensive race condition prevention and automated conflict resolution for all CI/CD workflows.

### Requirement 17

**User Story:** As a developer, I want YAML file validation integrated into security workflows, so that corrupted security data files do not block CI/CD pipeline execution.

#### Acceptance Criteria

1. WHEN security workflows execute, THE GitHub_Actions SHALL validate YAML file syntax before processing security data files
2. WHEN YAML parsing errors are detected, THE GitHub_Actions SHALL attempt automatic repair of common syntax issues
3. WHEN automatic repair fails, THE GitHub_Actions SHALL provide detailed error information and continue with degraded functionality
4. THE GitHub_Actions SHALL log all YAML validation and repair operations for audit purposes
5. THE GitHub_Actions SHALL prevent corrupted YAML files from blocking critical CI/CD operations

### Requirement 18

**User Story:** As a developer, I want robust error handling for security data file corruption, so that CI/CD pipelines remain reliable despite data integrity issues.

#### Acceptance Criteria

1. THE GitHub_Actions SHALL implement comprehensive error handling for all security data file formats (JSON, YAML, Markdown)
2. WHEN security data files are corrupted, THE GitHub_Actions SHALL attempt recovery using backup data or regeneration
3. THE GitHub_Actions SHALL provide fallback mechanisms that allow workflows to complete with reduced functionality
4. THE GitHub_Actions SHALL alert maintainers when data corruption is detected and cannot be automatically resolved
5. THE GitHub_Actions SHALL maintain data integrity through validation checksums and format verification

### Requirement 19

**User Story:** As a developer, I want graceful degradation in security workflows, so that CI/CD pipelines can continue operating when non-critical security files are corrupted.

#### Acceptance Criteria

1. WHEN critical security files are corrupted, THE GitHub_Actions SHALL fail the workflow and prevent code integration
2. WHEN non-critical security files are corrupted, THE GitHub_Actions SHALL continue with reduced security functionality
3. THE GitHub_Actions SHALL clearly distinguish between critical and non-critical security file failures
4. THE GitHub_Actions SHALL provide detailed reporting on degraded functionality when operating in fallback mode
5. THE GitHub_Actions SHALL ensure that core security scanning continues even when auxiliary data files are corrupted