syncable-cli 0.37.1

pub mod go;
pub mod java;
pub mod javascript;
pub mod python;
pub mod rust;

use crate::analyzer::{DetectedLanguage, DetectedTechnology};
use crate::error::Result;
use std::collections::HashMap;

/// Common interface for language-specific framework detection
pub trait LanguageFrameworkDetector {
    /// Detect frameworks for a specific language
    fn detect_frameworks(&self, language: &DetectedLanguage) -> Result<Vec<DetectedTechnology>>;

    /// Get the supported language name(s) for this detector
    fn supported_languages(&self) -> Vec<&'static str>;
}

/// Technology detection rules with proper classification and relationships
#[derive(Clone, Debug)]
pub struct TechnologyRule {
    pub name: String,
    pub category: crate::analyzer::TechnologyCategory,
    pub confidence: f32,
    pub dependency_patterns: Vec<String>,
    /// Dependencies this technology requires (e.g., Next.js requires React)
    pub requires: Vec<String>,
    /// Technologies that conflict with this one (mutually exclusive)
    pub conflicts_with: Vec<String>,
    /// Whether this technology typically drives the architecture
    pub is_primary_indicator: bool,
    /// Alternative names for this technology
    pub alternative_names: Vec<String>,
    /// File indicators that can help identify this technology
    pub file_indicators: Vec<String>,
}

/// Shared utilities for framework detection across languages
pub struct FrameworkDetectionUtils;

impl FrameworkDetectionUtils {
    /// Generic technology detection based on dependency patterns
    pub fn detect_technologies_by_dependencies(
        rules: &[TechnologyRule],
        dependencies: &[String],
        base_confidence: f32,
    ) -> Vec<DetectedTechnology> {
        let mut technologies = Vec::new();

        // Debug logging for Tanstack Start detection
        let tanstack_deps: Vec<_> = dependencies
            .iter()
            .filter(|dep| dep.contains("tanstack") || dep.contains("vinxi"))
            .collect();
        if !tanstack_deps.is_empty() {
            log::debug!("Found potential Tanstack dependencies: {:?}", tanstack_deps);
        }

        for rule in rules {
            let mut matches = 0;
            let total_patterns = rule.dependency_patterns.len();

            if total_patterns == 0 {
                continue;
            }

            for pattern in &rule.dependency_patterns {
                let matching_deps: Vec<_> = dependencies
                    .iter()
                    .filter(|dep| Self::matches_pattern(dep, pattern))
                    .collect();

                if !matching_deps.is_empty() {
                    matches += 1;

                    // Debug logging for Tanstack Start specifically
                    if rule.name.contains("Tanstack") {
                        log::debug!(
                            "Tanstack Start: Pattern '{}' matched dependencies: {:?}",
                            pattern,
                            matching_deps
                        );
                    }
                }
            }

            // Calculate confidence based on pattern matches and base language confidence
            if matches > 0 {
                let pattern_confidence = matches as f32 / total_patterns as f32;
                // Use additive approach instead of multiplicative to avoid extremely low scores
                // Base confidence provides a floor, pattern confidence provides the scaling
                // Cap dependency-based confidence at 0.95 to ensure file-based detection (1.0) takes precedence
                let final_confidence =
                    (rule.confidence * pattern_confidence + base_confidence * 0.1).min(0.95);

                // Debug logging for Tanstack Start detection
                if rule.name.contains("Tanstack") {
                    log::debug!(
                        "Tanstack Start detected with {} matches out of {} patterns, confidence: {:.2}",
                        matches,
                        total_patterns,
                        final_confidence
                    );
                }

                technologies.push(DetectedTechnology {
                    name: rule.name.clone(),
                    version: None, // TODO: Extract version from dependencies
                    category: rule.category.clone(),
                    confidence: final_confidence,
                    requires: rule.requires.clone(),
                    conflicts_with: rule.conflicts_with.clone(),
                    is_primary: rule.is_primary_indicator,
                    file_indicators: rule.file_indicators.clone(),
                });
            } else if rule.name.contains("Tanstack") {
                // Debug logging when Tanstack Start is not detected
                log::debug!(
                    "Tanstack Start not detected - no patterns matched. Available dependencies: {:?}",
                    dependencies.iter().take(10).collect::<Vec<_>>()
                );
            }
        }

        technologies
    }

    /// Check if a dependency matches a pattern (supports wildcards)
    pub fn matches_pattern(dependency: &str, pattern: &str) -> bool {
        if pattern.contains('*') {
            // Simple wildcard matching
            let parts: Vec<&str> = pattern.split('*').collect();
            if parts.len() == 2 {
                dependency.starts_with(parts[0]) && dependency.ends_with(parts[1])
            } else {
                dependency.contains(&pattern.replace('*', ""))
            }
        } else {
            // For dependency detection, use exact matching to avoid false positives
            // Only match if the dependency is exactly the pattern or starts with the pattern followed by a version specifier
            dependency == pattern
                || dependency.starts_with(&(pattern.to_string() + "@"))
                || dependency.starts_with(&(pattern.to_string() + "/"))
                // Java/Maven style: spring-boot matches spring-boot-starter-web
                || dependency.starts_with(&(pattern.to_string() + "-"))
                // Maven groupId:artifactId style: org.springframework matches org.springframework.boot:spring-boot
                || dependency.starts_with(&(pattern.to_string() + "."))
                || dependency.starts_with(&(pattern.to_string() + ":"))
                // Maven artifactId contains the pattern (e.g., "spring" in "spring-boot-starter-web")
                || dependency.contains(&format!("-{}-", pattern))
                || dependency.contains(&format!(":{}", pattern))
        }
    }

    /// Resolves conflicts between mutually exclusive technologies
    pub fn resolve_technology_conflicts(
        technologies: Vec<DetectedTechnology>,
    ) -> Vec<DetectedTechnology> {
        let mut resolved = Vec::new();
        let mut name_to_tech: HashMap<String, DetectedTechnology> = HashMap::new();

        // First pass: collect all technologies
        for tech in technologies {
            if let Some(existing) = name_to_tech.get(&tech.name) {
                // Keep the one with higher confidence
                if tech.confidence > existing.confidence {
                    name_to_tech.insert(tech.name.clone(), tech);
                }
            } else {
                name_to_tech.insert(tech.name.clone(), tech);
            }
        }

        // Second pass: resolve conflicts
        let all_techs: Vec<_> = name_to_tech.values().collect();
        let mut excluded_names = std::collections::HashSet::new();

        for tech in &all_techs {
            if excluded_names.contains(&tech.name) {
                continue;
            }

            // Check for conflicts
            for conflict in &tech.conflicts_with {
                if let Some(conflicting_tech) = name_to_tech.get(conflict) {
                    if tech.confidence > conflicting_tech.confidence {
                        excluded_names.insert(conflict.clone());
                        log::info!(
                            "Excluding {} (confidence: {}) in favor of {} (confidence: {})",
                            conflict,
                            conflicting_tech.confidence,
                            tech.name,
                            tech.confidence
                        );
                    } else {
                        excluded_names.insert(tech.name.clone());
                        log::info!(
                            "Excluding {} (confidence: {}) in favor of {} (confidence: {})",
                            tech.name,
                            tech.confidence,
                            conflict,
                            conflicting_tech.confidence
                        );
                        break;
                    }
                }
            }
        }

        // Collect non-excluded technologies
        for tech in name_to_tech.into_values() {
            if !excluded_names.contains(&tech.name) {
                resolved.push(tech);
            }
        }

        resolved
    }

    /// Marks technologies that are primary drivers of the application architecture
    pub fn mark_primary_technologies(
        mut technologies: Vec<DetectedTechnology>,
    ) -> Vec<DetectedTechnology> {
        use crate::analyzer::TechnologyCategory;

        // Meta-frameworks are always primary
        let mut has_meta_framework = false;
        for tech in &mut technologies {
            if matches!(tech.category, TechnologyCategory::MetaFramework) {
                tech.is_primary = true;
                has_meta_framework = true;
            }
        }

        // If no meta-framework, mark the highest confidence backend or frontend framework as primary
        if !has_meta_framework {
            let mut best_framework: Option<usize> = None;
            let mut best_confidence = 0.0;

            for (i, tech) in technologies.iter().enumerate() {
                if matches!(
                    tech.category,
                    TechnologyCategory::BackendFramework | TechnologyCategory::FrontendFramework
                ) && tech.confidence > best_confidence
                {
                    best_confidence = tech.confidence;
                    best_framework = Some(i);
                }
            }

            if let Some(index) = best_framework {
                technologies[index].is_primary = true;
            }
        }

        technologies
    }
}