Implementation Roadmap

This document provides a detailed action plan for implementing the not-yet-supported update scenarios, ordered by complexity and feasibility.

Implementation Priority Matrix

Complexity vs Feasibility Analysis

Case	Complexity	Feasibility	Effort	Dependencies	Priority Score
#19 - Conflict Resolution Strategies (fallback)	Low	High	Low	None	🟢 1st
#18 - Alternative Package Suggestions	Low-Medium	High	Medium	Packagist API	🟢 2nd
#14 - Abandoned Package Detection	Low	High	Low	Packagist API	🟢 3rd
Maintainer Contact Suggestions	Low-Medium	High	Low-Medium	Package metadata	🟢 4th
#20 - Conflict Impact Analysis	Medium	High	Medium	None	🟡 5th
#16 - Batch Update Optimization	Medium	Medium	Medium	Graph analysis	🟡 6th
#11 - Wildcard Dependency Checking	Medium	Medium	Medium	Constraint parsing	🟡 7th
#13 - Cascading Conflict Chains	Medium-High	Medium	High	Recursive analysis	🟠 8th
#12 - Circular Dependency Conflicts	Medium	Medium	Medium	Graph analysis	🟠 9th
#15 - Repository-Specific Conflicts	Medium	Low-Medium	Medium	Repository config	🟠 10th
#17 - Pre-Installation Conflict Prediction	High	Low	Very High	Composer resolver	🔴 11th

Legend:

🟢 High feasibility, low complexity - Start here
🟡 Medium feasibility/complexity - Next phase
🟠 Lower feasibility or higher complexity - Future
🔴 Low feasibility, high complexity - Long-term

Phase 1: Quick Wins (Low Complexity, High Feasibility)

Priority 1: Conflict Resolution Strategies - Fallback Versions (#19)

Objective: Suggest compatible fallback versions when transitive dependency updates fail.

Complexity: ⭐ Low
Feasibility: ✅ High
Estimated Effort: 2-4 days
Dependencies: None (uses existing code)

Implementation Plan:

Modify findCompatibleVersion() function
- When transitive dependency update is not available, search for previous compatible version of the target package
- Check if earlier versions of the target package are compatible with installed dependencies
- Example: If package-a:2.0 conflicts, try package-a:1.9, 1.8, etc.

Version search algorithm

// Pseudocode
function findFallbackVersion($packageName, $targetVersion, $conflictingDependency) {
    $versions = getAllVersions($packageName); // Already available
    foreach ($versions as $version) {
        if (versionSatisfiesConstraint($version, $conflictingDependency->constraint)) {
            return $version; // Found compatible fallback
        }
    }
    return null;
}

Output format

⚠️  Filtered by dependency conflicts:
  - package-a:2.0 (prod) (conflicts with: dependency-x requires package-a ^1.5)

💡 Alternative solution:
  - package-a:1.9.5 (compatible with dependency-x ^1.5)

Testing
- Test with packages that have version history
- Verify compatibility checking
- Ensure fallback versions are actually compatible

Benefits:

Provides alternative solution when primary update fails
User has actionable options
Low risk implementation

Priority 2: Alternative Package Suggestions (#18)

Objective: Suggest alternative packages when updates are blocked by conflicts.

Complexity: ⭐⭐ Low-Medium
Feasibility: ✅ High
Estimated Effort: 3-5 days
Dependencies: Packagist API (replaces/suggests fields)

Implementation Plan:

Detect abandoned packages
- Use Packagist API to check if package is abandoned
- Check abandoned field in package metadata
- If abandoned, get suggested replacement from replaces or suggest fields

Search for alternatives

function findAlternativePackages($packageName, $blockedBy) {
    // Check Packagist for abandoned status
    $packageInfo = getPackagistPackageInfo($packageName);
    
    if ($packageInfo['abandoned']) {
        return $packageInfo['replacement']; // Usually provided
    }
    
    // Search for packages with similar functionality
    // Use Packagist search API with keywords
    return searchSimilarPackages($packageName);
}

Output format

⚠️  Filtered by dependency conflicts:
  - abandoned/package:1.0 (prod) (conflicts with: dependency-x requires abandoned/package ^2.0)

💡 Package is abandoned. Suggested alternatives:
  - new-maintained/package:2.0 (recommended replacement)
  - alternative/package:3.0 (alternative solution)

Testing
- Test with known abandoned packages
- Verify Packagist API integration
- Test fallback when no alternatives found

Benefits:

Helps users migrate from abandoned packages
Provides actionable migration paths
Leverages existing Packagist data

Priority 3: Abandoned Package Detection (#14)

Objective: Detect and warn about abandoned packages in conflict scenarios.

Complexity: ⭐ Low
Feasibility: ✅ High
Estimated Effort: 1-2 days
Dependencies: Packagist API

Implementation Plan:

Add abandoned package detection
- When filtering packages, check if they're abandoned
- Use Packagist API or composer show command
- Store abandoned status in output

Warning message

if ($packageInfo['abandoned']) {
    $conflictInfo .= " (⚠️ Package is abandoned" . 
                     ($packageInfo['replacement'] ? 
                      ", replaced by: {$packageInfo['replacement']}" : 
                      ")");
}

Output format

⚠️  Filtered by dependency conflicts:
  - abandoned/package:1.0 (prod) (conflicts with: dependency-x requires abandoned/package ^2.0) 
    (⚠️ Package is abandoned, replaced by: new-package/name)

Testing
- Test with abandoned packages
- Verify replacement detection
- Handle packages without replacements

Benefits:

Clear warning about abandoned packages
Users know to migrate
Very low complexity

Phase 2: Medium Complexity Improvements

Priority 4: Conflict Impact Analysis (#20)

Objective: Show which packages would be affected by resolving conflicts.

Complexity: ⭐⭐⭐ Medium
Feasibility: ✅ High
Estimated Effort: 4-6 days
Dependencies: None (uses existing dependency tracking)

Implementation Plan:

Build dependency graph
- Traverse composer.lock to build dependency graph
- Track which packages depend on which
- Store in memory structure

Impact analysis algorithm

function analyzeImpact($packageToUpdate, $newVersion) {
    $affectedPackages = [];
    
    // Find all packages that depend on this one
    $directDependents = getPackageConstraintsFromLock($packageToUpdate);
    
    foreach ($directDependents as $dependent => $constraint) {
        // Check if dependent would be affected
        if (!versionSatisfiesConstraint($newVersion, $constraint)) {
            $affectedPackages[] = $dependent;
            
            // Recursively check transitive dependencies
            $affectedPackages = array_merge(
                $affectedPackages,
                analyzeImpact($dependent, $dependent->installedVersion)
            );
        }
    }
    
    return array_unique($affectedPackages);
}

Output format

⚠️  Filtered by dependency conflicts:
  - package-a:2.0 (prod) (conflicts with: dependency-x requires package-a ^1.5)

📊 Impact analysis: Updating package-a would affect:
  - dependent-package-1 (requires package-a ^1.5)
  - dependent-package-2 (requires package-a ^1.5)
  - dependent-package-3 (transitively depends on dependent-package-1)

Testing
- Test with packages that have multiple dependents
- Verify recursive impact detection
- Test with complex dependency chains

Benefits:

Users understand full impact before updating
Better decision making
Reduces surprises after updates

Priority 6: Batch Update Optimization (#16)

Objective: Optimize update order to minimize resolver calls.

Complexity: ⭐⭐⭐ Medium
Feasibility: ⚠️ Medium
Estimated Effort: 5-7 days
Dependencies: Dependency graph analysis

Implementation Plan:

Build dependency graph
- Create graph of all packages to update
- Identify dependencies between updates
- Topological sort to determine order

Batching algorithm

function optimizeUpdateOrder($packages) {
    // Build dependency graph
    $graph = buildDependencyGraph($packages);
    
    // Topological sort
    $sorted = topologicalSort($graph);
    
    // Group by dependency level (can be updated together)
    $batches = groupByDependencyLevel($sorted);
    
    return $batches;
}

Output format

🔧 Optimized update strategy (3 batches):

Batch 1 (base dependencies):
  composer require --with-all-dependencies package-a:1.0 package-b:2.0

Batch 2 (depends on batch 1):
  composer require --with-all-dependencies package-c:3.0

Batch 3 (depends on batch 2):
  composer require --with-all-dependencies package-d:4.0 package-e:5.0

Testing
- Test with complex dependency chains
- Verify correct batching
- Test edge cases (no dependencies, circular references)

Benefits:

More efficient updates
Fewer resolver calls
Better user experience

Priority 7: Wildcard Dependency Checking (#11)

Objective: Extend dependency checking to wildcard constraints (^, ~, *).

Complexity: ⭐⭐⭐ Medium
Feasibility: ⚠️ Medium
Estimated Effort: 4-6 days
Dependencies: Enhanced constraint parsing

Implementation Plan:

Enhance constraint parsing
- Parse wildcard constraints to extract version ranges
- For ^1.2.3, check if proposed version is in range >=1.2.3 <2.0.0
- For ~1.2.3, check if proposed version is in range >=1.2.3 <1.3.0
- For 1.2.*, check if proposed version matches 1.2.x

Version range checking

function versionSatisfiesWildcardConstraint($version, $constraint) {
    if (strpos($constraint, '^') === 0) {
        // Caret constraint
        return checkCaretConstraint($version, $constraint);
    } elseif (strpos($constraint, '~') === 0) {
        // Tilde constraint
        return checkTildeConstraint($version, $constraint);
    } elseif (strpos($constraint, '*') !== false) {
        // Wildcard constraint
        return checkWildcardConstraint($version, $constraint);
    }
    // Fallback to existing logic for specific versions
    return versionSatisfiesConstraint($version, $constraint);
}

Integration
- Modify findCompatibleVersion() to handle wildcards
- Update dependency checking logic
- Ensure backward compatibility
Testing
- Test all constraint types
- Verify edge cases
- Test with real-world constraints

Benefits:

More comprehensive conflict detection
Catches conflicts in wildcard constraints
Better accuracy

Phase 3: Complex Features (Higher Complexity)

Priority 8: Cascading Conflict Chains (#13)

Objective: Detect and suggest updates for multi-level dependency chains.

Complexity: ⭐⭐⭐⭐ Medium-High
Feasibility: ⚠️ Medium
Estimated Effort: 7-10 days
Dependencies: Recursive dependency analysis

Implementation Plan:

Recursive dependency traversal

function findTransitiveChain($packageName, $targetVersion, $depth = 0, $maxDepth = 5) {
    if ($depth >= $maxDepth) return []; // Prevent infinite loops
    
    $requirements = getPackageRequirements($packageName, $targetVersion);
    $chain = [];
    
    foreach ($requirements as $reqPackage => $reqConstraint) {
        $installedVersion = getInstalledPackageVersion($reqPackage);
        
        if (!versionSatisfiesConstraint($installedVersion, $reqConstraint)) {
            // Find compatible version
            $compatibleVersion = findCompatibleVersion($reqPackage, $targetVersion);
            $chain[] = [
                'package' => $reqPackage,
                'required' => $reqConstraint,
                'suggested' => $compatibleVersion,
                'depth' => $depth
            ];
            
            // Recursively check requirements of this dependency
            $subChain = findTransitiveChain($reqPackage, $compatibleVersion, $depth + 1);
            $chain = array_merge($chain, $subChain);
        }
    }
    
    return $chain;
}

Chain visualization

💡 Multi-level dependency chain detected:

Level 1 (direct requirement):
  - package-d:4.0 requires package-c:^3.0

Level 2 (transitive):
  - package-c:3.0 requires package-b:^2.0

Level 3 (transitive):
  - package-b:2.0 requires package-a:^1.5

🔧 Suggested command (all levels):
  composer require --with-all-dependencies \
    package-a:1.5.0 package-b:2.0.0 package-c:3.0.0 package-d:4.0.0

Testing
- Test with deep chains (3+ levels)
- Verify recursive detection
- Test with circular references (should stop)

Benefits:

Handles complex dependency scenarios
Reduces manual intervention
Better user experience

Priority 9: Circular Dependency Conflicts (#12)

Objective: Detect circular dependencies and suggest resolution strategies.

Complexity: ⭐⭐⭐ Medium
Feasibility: ⚠️ Medium
Estimated Effort: 5-7 days
Dependencies: Graph cycle detection

Implementation Plan:

Cycle detection algorithm

function detectCircularDependencies($packages) {
    $graph = buildDependencyGraph($packages);
    $cycles = [];
    $visited = [];
    
    foreach ($graph->nodes as $node) {
        if (!isset($visited[$node])) {
            $cycle = findCycle($graph, $node, [], $visited);
            if ($cycle) {
                $cycles[] = $cycle;
            }
        }
    }
    
    return $cycles;
}

function findCycle($graph, $node, $path, &$visited) {
    if (in_array($node, $path)) {
        // Found cycle
        $startIndex = array_search($node, $path);
        return array_slice($path, $startIndex) + [$node];
    }
    
    $path[] = $node;
    $visited[$node] = true;
    
    foreach ($graph->edges[$node] as $neighbor) {
        $cycle = findCycle($graph, $neighbor, $path, $visited);
        if ($cycle) return $cycle;
    }
    
    array_pop($path);
    return null;
}

Resolution strategies
- Strategy 1: Update all packages in cycle together
- Strategy 2: Break cycle by updating one package first (if possible)
- Strategy 3: Suggest removing one package from cycle

Output format

⚠️  Circular dependency detected:
  package-a:2.0 → package-b:1.6 → package-a:2.0

💡 Resolution strategies:

Strategy 1 (recommended): Update all together
  composer require --with-all-dependencies \
    package-a:2.0 package-b:1.6

Strategy 2: Break cycle by updating package-b first
  composer require --with-all-dependencies package-b:1.6
  composer require --with-all-dependencies package-a:2.0

Testing
- Test with known circular dependencies
- Verify cycle detection
- Test resolution strategies

Benefits:

Identifies problematic dependencies
Provides multiple resolution options
Better user guidance

Priority 10: Repository-Specific Conflicts (#15)

Objective: Detect conflicts from repository priorities.

Complexity: ⭐⭐⭐ Medium
Feasibility: ⚠️ Low-Medium
Estimated Effort: 6-8 days
Dependencies: Repository configuration parsing

Implementation Plan:

Parse repository configuration
- Read composer.json repositories section
- Understand repository priorities
- Map packages to repositories
Conflict detection
- Check if package exists in multiple repositories
- Detect version mismatches between repositories
- Warn about priority issues

Output format

⚠️  Repository priority conflict detected:
  - package-x:2.0 exists in both:
    - private-repo (priority: 200)
    - packagist.org (priority: -1000)
  Current installation comes from: private-repo

💡 Suggestion: Adjust repository priority or explicitly require version

Testing
- Test with multiple repositories
- Verify priority detection
- Test edge cases

Benefits:

Helps with private repository setups
Identifies configuration issues
Better multi-repo support

Phase 4: Long-Term (High Complexity)

Priority 11: Pre-Installation Conflict Prediction (#17)

Objective: Use Composer's resolver for accurate conflict prediction.

Complexity: ⭐⭐⭐⭐⭐ Very High
Feasibility: ❌ Low
Estimated Effort: 15-20 days
Dependencies: Composer API integration, dependency resolver

Implementation Plan:

Research Composer API
- Study Composer's internal dependency resolver
- Identify available APIs for dry-run
- Determine integration points

Dry-run implementation

function dryRunComposerRequire($packages) {
    // Use Composer's Installer in dry-run mode
    $composer = Factory::create(new NullIO(), 'composer.json');
    $installer = new Installer(
        $composer->getIO(),
        $composer->getConfig(),
        $composer->getPackage(),
        $composer->getDownloadManager(),
        $composer->getRepositoryManager(),
        $composer->getLocker(),
        $composer->getInstallationManager(),
        $composer->getEventDispatcher(),
        $composer->getAutoloadGenerator()
    );
    
    $installer->setDryRun(true);
    $result = $installer->run();
    
    return $result;
}

Challenges:
- Composer's resolver is complex
- May require significant refactoring
- Performance implications
- Maintenance burden
Alternative approach:
- Consider using composer require --dry-run command
- Parse output for conflicts
- Less accurate but simpler

Benefits:

100% accurate conflict detection
No false positives/negatives
Uses Composer's actual resolver

Risks:

High complexity
Maintenance burden
May require Composer version compatibility

Implementation Timeline

Phase 1: Quick Wins (Weeks 1-4)

✅ Week 1-2: Priority 1 (Fallback versions) - 2-4 days
✅ Week 2-3: Priority 2 (Alternative packages) - 3-5 days
✅ Week 3-4: Priority 3 (Abandoned detection) - 1-2 days

Total Phase 1: ~8-11 days (2-3 weeks)

Phase 2: Medium Improvements (Weeks 5-11)

✅ Week 5-6: Priority 4 (Maintainer contact suggestions) - 2-3 days COMPLETED
✅ Week 6-8: Priority 5 (Impact analysis) - 4-6 days COMPLETED
⏳ Week 8-10: Priority 6 (Batch optimization) - 5-7 days PENDING
✅ Week 10-11: Priority 7 (Wildcard checking) - 4-6 days COMPLETED

Total Phase 2: ~15-22 days (3-5 weeks) - 3/4 completed

Phase 3: Complex Features (Weeks 12-19)

⏳ Week 12-14: Priority 8 (Cascading chains) - 7-10 days PENDING
⏳ Week 14-16: Priority 9 (Circular deps) - 5-7 days PENDING
⏳ Week 16-19: Priority 10 (Repository conflicts) - 6-8 days PENDING

Total Phase 3: ~18-25 days (4-6 weeks) - 0/3 completed

Phase 4: Long-Term (Months 4-6)

⏳ Month 4-6: Priority 11 (Pre-installation prediction) - 15-20 days PENDING
Research and proof of concept first
Consider alternatives if too complex

Total Phase 4: ~15-20 days (3-4 weeks, but lower priority) - 0/1 completed

Risk Assessment

High Risk

#17 - Pre-installation prediction: Very high complexity, low feasibility, maintenance burden

Medium Risk

#15 - Repository conflicts: Requires deep Composer knowledge, edge cases
#13 - Cascading chains: Recursive logic, potential performance issues

Low Risk

#19 - Fallback versions: Uses existing code, low complexity
#18 - Alternative packages: API integration, well-defined
#14 - Abandoned detection: Simple API call, low risk

Success Metrics

For each implemented feature, track:

Usage metrics: How often is the feature used?
Success rate: How often does it provide actionable solutions?
User feedback: Do users find it helpful?
Performance impact: Does it slow down execution?
False positive rate: How often does it suggest incorrect solutions?

Notes

Start with Phase 1: These provide immediate value with low risk
Iterate based on feedback: Adjust priorities based on user needs
Consider alternatives: For complex features (#17), explore simpler alternatives first
Documentation: Update UPDATE_CASES.md as features are implemented
Testing: Comprehensive tests for each feature before release
⚠️ Translations Required: All new features must include translations for all 31 supported languages (en, es, pt, it, fr, de, pl, ru, ro, el, da, nl, cs, sv, no, fi, tr, zh, ja, ko, ar, hu, sk, uk, hr, bg, he, hi, vi, id, th)

Translation Requirements

Internationalization (i18n) for New Features

All new features implemented in this roadmap must include translations for all 31 supported languages. The translation files are located in bin/i18n/:

Translation Files Structure:

PHP translations: bin/i18n/{lang}.php (31 files)
Bash translations: bin/i18n/{lang}.sh (31 files)
Help text: bin/i18n/help-{lang}.txt (31 files)

Supported Languages (31 total):

en - English 🇬🇧 🇺🇸 (default)
es - Spanish 🇪🇸
pt - Portuguese 🇵🇹 🇧🇷
it - Italian 🇮🇹
fr - French 🇫🇷
de - German 🇩🇪
pl - Polish 🇵🇱
ru - Russian 🇷🇺
ro - Romanian 🇷🇴
el - Greek 🇬🇷
da - Danish 🇩🇰
nl - Dutch 🇳🇱
cs - Czech 🇨🇿
sv - Swedish 🇸🇪
no - Norwegian 🇳🇴
fi - Finnish 🇫🇮
tr - Turkish 🇹🇷
zh - Chinese 🇨🇳
ja - Japanese 🇯🇵
ko - Korean 🇰🇷
ar - Arabic 🇸🇦
hu - Hungarian 🇭🇺
sk - Slovak 🇸🇰
uk - Ukrainian 🇺🇦
hr - Croatian 🇭🇷
bg - Bulgarian 🇧🇬
he - Hebrew 🇮🇱
hi - Hindi 🇮🇳
vi - Vietnamese 🇻🇳
id - Indonesian 🇮🇩
th - Thai 🇹🇭

Translation Keys for New Features

When implementing new features, add translation keys to all language files:

Example: Maintainer Contact Suggestions

// English (en.php)
return [
    // ... existing translations
    'maintainer_contact_required' => 'No automatic solution available - Manual intervention required:',
    'contact_maintainer_action' => 'Suggested actions:',
    'contact_maintainer_email' => 'Contact package maintainer(s):',
    'open_repository_issue' => 'Open issue on repository:',
    'issue_title_suggestion' => 'Suggested issue title:',
    'issue_body_suggestion' => 'Suggested issue body:',
    'package_stale_note' => 'Note: This package hasn\'t been updated since {date} (over 2 years ago). Consider:',
    'find_alternative_package' => 'Finding an alternative package',
    'fork_and_maintain' => 'Forking and maintaining yourself',
    'contact_maintainer_status' => 'Contacting maintainer about maintenance status',
];

// Spanish (es.php)
return [
    // ... existing translations
    'maintainer_contact_required' => 'No hay solución automática disponible - Se requiere intervención manual:',
    'contact_maintainer_action' => 'Acciones sugeridas:',
    'contact_maintainer_email' => 'Contactar mantenedor(es) del paquete:',
    'open_repository_issue' => 'Abrir issue en el repositorio:',
    // ... more translations
];

Translation Checklist for Each Feature

When implementing a new feature, ensure:

Add translation keys to bin/i18n/en.php (English - master)
Add same keys to all other 30 language files (bin/i18n/{lang}.php)
Update Bash translations in bin/i18n/{lang}.sh (if feature uses Bash)
Update help text in bin/i18n/help-{lang}.txt (if feature is mentioned in help)
Test translations in at least 3 languages (English, Spanish, and one other)
Verify translations don't break output formatting
Check that translation function t($key, $params) is used correctly

Translation Function Usage

PHP (process-updates.php):

// Load translations
$translations = loadTranslations($lang);

// Use translations
echo t('maintainer_contact_required', [], $lang);
echo t('package_stale_note', ['date' => $lastUpdate], $lang);

Bash (generate-composer-require.sh):

# Load translations
source bin/i18n/translations.sh
load_translations "$detected_lang"

# Use translations
echo "$(t 'maintainer_contact_required')"

Estimated Translation Effort

For each new feature, add approximately 1-2 hours for translation work:

Translation keys identification: 15-30 minutes
English translation (master): 15-30 minutes
Translation to 30 languages: 30-60 minutes (using translation tools + review)
Testing: 15-30 minutes

Total: ~1-2 hours per feature for complete i18n support

Resources

Translation files location: bin/i18n/
Translation strategy documentation: See I18N_STRATEGY.md
Existing translation keys: Check bin/i18n/en.php for reference
Translation helpers: Use bin/i18n/loader.php (PHP) and bin/i18n/translations.sh (Bash)

Important: Do not skip translations - the i18n system is production-ready and all user-facing messages must be translatable.

Manual Intervention Required: Contact Package Maintainers

There are scenarios where no automatic solution is possible and users must contact package maintainers to request dependency updates. These cases should be detected and clearly communicated to users.

When to Suggest Contacting Maintainers

The following scenarios indicate that manual intervention by package maintainers is needed:

Incompatible Version Requirements
- Package A requires dependency-x:^2.0
- Package B requires dependency-x:^1.0
- No version of dependency-x satisfies both constraints
- Solution: Contact maintainers of Package A or B to update their requirements
Abandoned Package Without Replacement
- Package is abandoned with no suggested replacement
- Conflicts with newer dependencies
- Solution: Contact maintainer to find alternative or fork package
Stale Package Requirements
- Package hasn't been updated in >2 years
- Requires very old dependencies (e.g., symfony/console:^2.0 when 6.0 is available)
- Solution: Contact maintainer to request dependency updates
Conflicting Major Version Requirements
- Package A requires dependency-x:^1.0|^2.0 (allows both)
- Package B requires dependency-x:^3.0 (only 3.x)
- No overlap between allowed versions
- Solution: Contact maintainer of Package A or B to update version constraints

Implementation Plan for Maintainer Contact Suggestions

Priority: Medium (should be part of Phase 2)

Complexity: ⭐⭐ Low-Medium
Feasibility: ✅ High
Estimated Effort: 2-3 days (+ 1-2 hours for translations)
Dependencies: Package metadata (last update, maintainer info), Translation system (31 languages)

Implementation Plan:

Detect maintainer contact scenarios

function shouldSuggestMaintainerContact($packageName, $conflictingPackage, $constraint1, $constraint2) {
    // Check if constraints are completely incompatible
    if (!constraintsOverlap($constraint1, $constraint2)) {
        // Check if package is stale (>2 years old)
        $lastUpdate = getPackageLastUpdate($packageName);
        if ($lastUpdate && (time() - strtotime($lastUpdate)) > (2 * 365 * 24 * 60 * 60)) {
            return true; // Package is stale, suggest contacting maintainer
        }
        
        // Check if constraints are on different major versions
        if (areDifferentMajorVersions($constraint1, $constraint2)) {
            return true; // Major version conflict, suggest contacting maintainer
        }
    }
    
    return false;
}

Get maintainer information
- Extract from composer.json (authors field)
- Extract from Packagist API
- Extract from GitHub/GitLab repository (if available)

Generate maintainer contact message

function generateMaintainerContactMessage($packageName, $conflictInfo) {
    $maintainerInfo = getPackageMaintainerInfo($packageName);
    $repoUrl = getPackageRepositoryUrl($packageName);
    $lastUpdate = getPackageLastUpdate($packageName);
    
    $message = "⚠️  No automatic solution available. Manual intervention required:\n";
    $message .= "\n";
    $message .= "📦 Package: {$packageName}\n";
    $message .= "❌ Conflict: {$conflictInfo}\n";
    $message .= "\n";
    $message .= "💡 Suggested actions:\n";
    $message .= "1. Contact package maintainer(s):\n";
    
    foreach ($maintainerInfo as $maintainer) {
        $message .= "   - {$maintainer['name']} ({$maintainer['email']})\n";
    }
    
    if ($repoUrl) {
        $message .= "\n";
        $message .= "2. Open issue on repository:\n";
        $message .= "   - {$repoUrl}/issues/new\n";
        $message .= "\n";
        $message .= "   Suggested issue title: \"Update dependency constraint to resolve conflict\"\n";
        $message .= "   Suggested issue body: \"Package {$packageName} requires {$conflictInfo['constraint']}, ";
        $message .= "but this conflicts with {$conflictInfo['conflictingPackage']} which requires ";
        $message .= "{$conflictInfo['conflictingConstraint']}. Please consider updating the dependency constraint.\"\n";
    }
    
    if ($lastUpdate && (time() - strtotime($lastUpdate)) > (2 * 365 * 24 * 60 * 60)) {
        $message .= "\n";
        $message .= "⚠️  Note: This package hasn't been updated since " . date('Y-m-d', strtotime($lastUpdate));
        $message .= " (over 2 years ago). Consider:\n";
        $message .= "   - Finding an alternative package\n";
        $message .= "   - Forking and maintaining yourself\n";
        $message .= "   - Contacting maintainer about maintenance status\n";
    }
    
    return $message;
}

Output format

⚠️  No automatic solution available - Manual intervention required:

📦 Package: vendor/package-a
❌ Conflict: Requires dependency-x:^1.0, but vendor/package-b requires dependency-x:^2.0

💡 Suggested actions:

1. Contact package maintainer(s):
   - John Doe (john@example.com)
   - Jane Smith (jane@example.com)

2. Open issue on repository:
   - https://github.com/vendor/package-a/issues/new

   Suggested issue title: "Update dependency constraint to resolve conflict"
   Suggested issue body: "Package vendor/package-a requires dependency-x:^1.0, 
   but this conflicts with vendor/package-b which requires dependency-x:^2.0. 
   Please consider updating the dependency constraint."

⚠️  Note: This package hasn't been updated since 2021-05-15 (over 2 years ago). 
Consider:
   - Finding an alternative package
   - Forking and maintaining yourself
   - Contacting maintainer about maintenance status

Integration points
- Add to findCompatibleVersion() when no compatible version found
- Add to abandoned package detection (#14)
- Add to circular dependency detection (#12)
- Add to incompatible constraint detection
Testing
- Test with packages that have incompatible constraints
- Verify maintainer information extraction
- Test with stale packages
- Test with packages without repository URLs

Benefits:

Clear guidance when automatic solutions aren't possible
Provides actionable steps (contact info, issue templates)
Helps users understand when manual intervention is needed
Encourages community collaboration

Use Cases:

Incompatible Constraints:

Package A: requires dependency-x:^1.0
Package B: requires dependency-x:^2.0
→ Contact maintainer of A or B to update constraint

Stale Package:

Package: old/package (last updated: 2020-01-01)
Requires: symfony/console:^3.0
Current: symfony/console:6.0
→ Contact maintainer to request update or find alternative

Abandoned Without Replacement:

Package: abandoned/package (abandoned: true)
No replacement suggested
→ Contact original maintainer or find community fork

Priority Integration:

This feature should be integrated with:

Priority 2 (#18 - Alternative Package Suggestions): When no alternatives found
Priority 3 (#14 - Abandoned Package Detection): When package is abandoned
Priority 1 (#19 - Fallback Versions): When no fallback versions available

Configuration Option:

Add configuration option to control maintainer contact suggestions:

# Enable maintainer contact suggestions
# When enabled (true), the tool will suggest contacting maintainers when no automatic solution is available.
# When disabled (false), the tool will only show conflict messages without maintainer contact suggestions.
# Default: true
suggest-maintainer-contact: true

Last updated: 2026-01-16 Document version: 1.0

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IMPLEMENTATION_ROADMAP.md

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Implementation Roadmap

Implementation Priority Matrix

Complexity vs Feasibility Analysis

Phase 1: Quick Wins (Low Complexity, High Feasibility)

Priority 1: Conflict Resolution Strategies - Fallback Versions (#19)

Priority 2: Alternative Package Suggestions (#18)

Priority 3: Abandoned Package Detection (#14)

Phase 2: Medium Complexity Improvements

Priority 4: Conflict Impact Analysis (#20)

Priority 6: Batch Update Optimization (#16)

Priority 7: Wildcard Dependency Checking (#11)

Phase 3: Complex Features (Higher Complexity)

Priority 8: Cascading Conflict Chains (#13)

Priority 9: Circular Dependency Conflicts (#12)

Priority 10: Repository-Specific Conflicts (#15)

Phase 4: Long-Term (High Complexity)

Priority 11: Pre-Installation Conflict Prediction (#17)

Implementation Timeline

Phase 1: Quick Wins (Weeks 1-4)

Phase 2: Medium Improvements (Weeks 5-11)

Phase 3: Complex Features (Weeks 12-19)

Phase 4: Long-Term (Months 4-6)

Risk Assessment

High Risk

Medium Risk

Low Risk

Success Metrics

Notes

Translation Requirements

Internationalization (i18n) for New Features

Translation Keys for New Features

Translation Checklist for Each Feature

Translation Function Usage

Estimated Translation Effort

Resources

Manual Intervention Required: Contact Package Maintainers

When to Suggest Contacting Maintainers

Implementation Plan for Maintainer Contact Suggestions