# 📋 Documentation Index

## Getting Started

**👉 START HERE:** [START_HERE.md](START_HERE.md)
- Complete setup summary
- Quick start guide
- Critical first steps
- Timeline for submission

## Main Documentation Files

### 1. **[README_SUBMISSION.md](README_SUBMISSION.md)** - Submission Guide
- Step-by-step fixing instructions
- Code standards quick reference
- Most common issues with solutions
- Testing and submission checklist
- **Use when:** You're ready to start fixing code

### 2. **[MOODLE_STANDARDS.md](MOODLE_STANDARDS.md)** - Complete Standards Reference
- Detailed Moodle plugin standards
- 15 key standard areas explained
- Code examples for correct/incorrect patterns
- Security best practices
- Privacy/GDPR compliance
- **Use when:** You need detailed explanation of a requirement

### 3. **[QUICK_REFERENCE.md](QUICK_REFERENCE.md)** - Quick Lookup Card
- Essential commands
- Code standards summary table
- Critical code blocks (copy-paste ready)
- Common issues with fixes
- Validation parameters reference
- Moodle functions cheat sheet
- **Use when:** You need quick code reference

### 4. **[SETUP_CHECKER_TOOLS.md](SETUP_CHECKER_TOOLS.md)** - Professional Tools Guide
- VS Code extensions setup
- PHP CodeSniffer installation
- PHPStan setup
- GitHub Actions CI/CD
- Command-line tools
- **Use when:** You want to set up professional checking tools

### 5. **[STANDARDS_REPORT.md](STANDARDS_REPORT.md)** - Code Analysis Report
- Current issues summary
- Issues by category
- Recommended action plan
- Issue breakdown (critical/medium/low)
- **Use when:** You need to understand current status

## Tool Files

### Code Checking Tools

**[check_standards.php](check_standards.php)**
- PHP-based code checker
- No external dependencies
- Checks for common violations
- Usage: `php check_standards.php`
- **Use for:** Quick local checking

**[auto_fix_standards.php](auto_fix_standards.php)**
- Automated fixer for common issues
- Fixes whitespace, quotes, trailing spaces
- Fixes missing file headers
- Usage: `php auto_fix_standards.php`
- **⚠️ WARNING: Modifies files - BACKUP FIRST!**

**[.phpcs.xml](.phpcs.xml)**
- PHP CodeSniffer configuration
- Moodle coding standards rules
- Can be used with professional phpcs tool
- Define pattern matching rules
- **Use with:** `phpcs --standard=.phpcs.xml`

## Issue Severity Guide

### 🔴 Critical (Must Fix Before Submission)
1. Missing MOODLE_INTERNAL checks
2. Silenced error operators (@)
3. Bare die()/exit() calls
4. SQL injection vulnerabilities
5. XSS vulnerabilities
6. Missing file headers

**Location:** Lines marked as "Errors" in check_standards.php output

### 🟡 Medium Priority (Should Fix)
1. Quote style consistency
2. Long lines (>120 chars)
3. Missing PHPDoc blocks
4. Trailing whitespace
5. Indentation issues

**Location:** Listed in check_standards.php warnings

### 🟢 Low Priority (Nice to Have)
1. Code organization
2. Comments quality
3. Performance optimization
4. Test coverage

## Quick Problem Solver

### "I don't know where to start"
→ Read [START_HERE.md](START_HERE.md)

### "I need to understand the standards"
→ Read [MOODLE_STANDARDS.md](MOODLE_STANDARDS.md)

### "I need quick code examples"
→ Check [QUICK_REFERENCE.md](QUICK_REFERENCE.md)

### "I have a specific error from check_standards.php"
→ Search in [README_SUBMISSION.md](README_SUBMISSION.md) and [MOODLE_STANDARDS.md](MOODLE_STANDARDS.md)

### "I want professional tools"
→ Follow [SETUP_CHECKER_TOOLS.md](SETUP_CHECKER_TOOLS.md)

### "I want to see what's wrong with my code"
→ Run: `php check_standards.php`

### "I want to auto-fix issues"
→ Run: `php auto_fix_standards.php` (after backup!)

### "I need to check progress"
→ Read [STANDARDS_REPORT.md](STANDARDS_REPORT.md) for summary

## Recommended Reading Order

### For Complete Beginners
1. [START_HERE.md](START_HERE.md) - Overview
2. [README_SUBMISSION.md](README_SUBMISSION.md) - Step-by-step
3. [QUICK_REFERENCE.md](QUICK_REFERENCE.md) - For coding

### For Experienced Developers
1. [STANDARDS_REPORT.md](STANDARDS_REPORT.md) - Current status
2. [MOODLE_STANDARDS.md](MOODLE_STANDARDS.md) - Standards details
3. [QUICK_REFERENCE.md](QUICK_REFERENCE.md) - Quick lookup

### For Setting Up Tools
1. [SETUP_CHECKER_TOOLS.md](SETUP_CHECKER_TOOLS.md) - All options
2. [README_SUBMISSION.md](README_SUBMISSION.md) - Integration guide

## File Count Summary

| Type | Count | Files |
|------|-------|-------|
| Documentation | 6 | START_HERE.md, README_SUBMISSION.md, MOODLE_STANDARDS.md, STANDARDS_REPORT.md, SETUP_CHECKER_TOOLS.md, QUICK_REFERENCE.md |
| Tools | 2 | check_standards.php, auto_fix_standards.php |
| Config | 1 | .phpcs.xml |
| **Total** | **9** | Created for you |

## Key Statistics

- **Documentation pages:** 6
- **Code examples:** 50+
- **Issues identified:** 1,204
- **Critical errors:** 110
- **Warnings:** 1,094
- **PHP files checked:** 36

## Next Steps

1. **Read:** [START_HERE.md](START_HERE.md)
2. **Backup:** Your plugin code
3. **Run:** `php check_standards.php`
4. **Fix:** Critical issues first
5. **Test:** Your plugin works correctly
6. **Submit:** To Moodle repository

## Support Resources

### Included Documentation
- This index (DOCUMENTATION_INDEX.md)
- 6 comprehensive guides
- 2 automated tools
- 1 configuration file

### External Resources
- **Moodle:** https://moodle.org/dev
- **Coding Standards:** https://moodle.org/dev/Coding_style_guide
- **Plugin Repository:** https://moodle.org/plugins
- **Security Guide:** https://moodle.org/security

## Important Reminders

⚠️ **BACKUP YOUR CODE** before running auto_fix_standards.php

✅ **Use single quotes** for simple strings in PHP

✅ **Check MOODLE_INTERNAL** in all non-entry files

✅ **Validate all input** with required_param() or optional_param()

✅ **Escape all output** with s(), format_string(), or json_encode()

✅ **Use $DB global** for all database access

✅ **Document all functions** with PHPDoc blocks

## Version Information

- **Created:** January 26, 2026
- **Moodle Version:** 4.5
- **PHP Version:** 8.2.28
- **Status:** Ready for submission preparation

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**Ready to get started** Open [START_HERE.md](START_HERE.md) now!
