soma-core 2.0.0

use std::collections::HashMap;
use std::path::{Path, PathBuf};
use std::process::Command;
use std::fs;
use std::time::{SystemTime, UNIX_EPOCH};
use crate::edit_control::ModifiableEdit;
use crate::classification::{ClassifiedEdit, EditCategory};


/// Git Integration System for SOMA-CORE
/// Provides comprehensive Git workflow management with intelligent branching,
/// automated commits, conflict resolution, and backup strategies
#[derive(Debug, Clone)]
pub struct GitIntegrationSystem {
    /// Repository root path
    pub repository_path: PathBuf,
    /// Current Git configuration
    pub config: GitConfig,
    /// Branch management system
    pub branch_manager: BranchManager,
    /// Commit management system
    pub commit_manager: CommitManager,
    /// Conflict resolution system
    pub conflict_resolver: ConflictResolver,
    /// Backup management system
    pub backup_manager: BackupManager,
    /// Current session state
    pub session_state: GitSessionState,
}

/// Git configuration for SOMA-CORE integration
#[derive(Debug, Clone)]
pub struct GitConfig {
    /// Automatic commit on successful edits
    pub auto_commit: bool,
    /// Create session branches automatically
    pub session_branches: bool,
    /// Backup frequency in minutes
    pub backup_frequency_minutes: u32,
    /// Maximum backup retention days
    pub max_backup_days: u32,
    /// Integration with CI/CD pipelines
    pub cicd_integration: bool,
    /// Conflict resolution strategy
    pub conflict_strategy: ConflictStrategy,
}

/// Git session state tracking
#[derive(Debug, Clone)]
pub struct GitSessionState {
    /// Unique session identifier
    pub session_id: String,
    /// Session start timestamp
    pub start_time: SystemTime,
    /// Current branch name
    pub current_branch: String,
    /// Original branch name
    pub original_branch: String,
    /// Session edits applied
    pub edits_applied: Vec<String>,
    /// Session commit history
    pub commit_history: Vec<GitCommit>,
    /// Session backup points
    pub backup_points: Vec<BackupPoint>,
}

/// Branch management system
#[derive(Debug, Clone)]
pub struct BranchManager {
    /// Current repository path
    pub repo_path: PathBuf,
    /// Branch naming strategy
    pub naming_strategy: BranchNamingStrategy,
    /// Automatic cleanup of session branches
    pub auto_cleanup: bool,
    /// Maximum branch lifetime in days
    pub max_branch_lifetime_days: u32,
}

/// Commit management system
#[derive(Debug, Clone)]
pub struct CommitManager {
    /// Repository path
    pub repo_path: PathBuf,
    /// Commit message templates
    pub message_templates: HashMap<String, String>,
    /// Automatic staging of changes
    pub auto_stage: bool,
    /// Sign commits with GPG
    pub sign_commits: bool,
}

/// Conflict resolution system
#[derive(Debug, Clone)]
pub struct ConflictResolver {
    /// Repository path
    pub repo_path: PathBuf,
    /// Resolution strategies
    pub strategies: Vec<ConflictStrategy>,
    /// Integration with classification system
    pub use_classification: bool,
    /// Cognitive operator integration
    pub cognitive_resolution: bool,
}

/// Backup management system
#[derive(Debug, Clone)]
pub struct BackupManager {
    /// Repository path
    pub repo_path: PathBuf,
    /// Backup storage directory
    pub backup_dir: PathBuf,
    /// Compression enabled
    pub compress_backups: bool,
    /// Incremental backup strategy
    pub incremental: bool,
}

/// Git commit representation
#[derive(Debug, Clone)]
pub struct GitCommit {
    /// Commit hash
    pub hash: String,
    /// Commit message
    pub message: String,
    /// Commit timestamp
    pub timestamp: SystemTime,
    /// Files changed
    pub files_changed: Vec<String>,
    /// Associated SOMA edit IDs
    pub soma_edit_ids: Vec<String>,
}

/// Backup point for rollback capabilities
#[derive(Debug, Clone)]
pub struct BackupPoint {
    /// Backup identifier
    pub id: String,
    /// Backup timestamp
    pub timestamp: SystemTime,
    /// Repository state hash
    pub state_hash: String,
    /// Backup file path
    pub backup_path: PathBuf,
    /// Description of backup point
    pub description: String,
}

/// Branch naming strategies
#[derive(Debug, Clone)]
pub enum BranchNamingStrategy {
    /// soma-session-{timestamp}
    SessionTimestamp,
    /// soma-session-{session_id}
    SessionId,
    /// soma-{user}-{timestamp}
    UserTimestamp,
    /// Custom naming pattern
    Custom(String),
}

/// Conflict resolution strategies
#[derive(Debug, Clone)]
pub enum ConflictStrategy {
    /// Prefer local changes
    PreferLocal,
    /// Prefer remote changes
    PreferRemote,
    /// Interactive resolution
    Interactive,
    /// Classification-based resolution
    ClassificationBased,
    /// Cognitive operator resolution
    CognitiveResolution,
}

/// Git operation results
#[derive(Debug, Clone)]
pub enum GitOperationResult {
    /// Operation succeeded
    Success(String),
    /// Operation failed with error
    Error(String),
    /// Operation requires user intervention
    RequiresIntervention(String),
    /// Conflict detected
    Conflict(ConflictInfo),
}

/// Conflict information
#[derive(Debug, Clone)]
pub struct ConflictInfo {
    /// Conflicted files
    pub files: Vec<String>,
    /// Conflict descriptions
    pub descriptions: Vec<String>,
    /// Suggested resolution strategy
    pub suggested_strategy: ConflictStrategy,
    /// Classification results for conflicted edits
    pub classification_results: Vec<ClassifiedEdit>,
}

impl Default for GitConfig {
    fn default() -> Self {
        GitConfig {
            auto_commit: true,
            session_branches: true,
            backup_frequency_minutes: 30,
            max_backup_days: 7,
            cicd_integration: false,
            conflict_strategy: ConflictStrategy::Interactive,
        }
    }
}

impl Default for BranchNamingStrategy {
    fn default() -> Self {
        BranchNamingStrategy::SessionTimestamp
    }
}

impl GitIntegrationSystem {
    /// Create a new Git integration system
    pub fn new(repository_path: PathBuf) -> Result<Self, String> {
        // Validate repository
        if !Self::is_git_repository(&repository_path) {
            return Err(format!("Path {:?} is not a Git repository", repository_path));
        }

        let config = GitConfig::default();
        let branch_manager = BranchManager::new(repository_path.clone())?;
        let commit_manager = CommitManager::new(repository_path.clone())?;
        let conflict_resolver = ConflictResolver::new(repository_path.clone())?;
        let backup_manager = BackupManager::new(repository_path.clone())?;
        
        let session_id = Self::generate_session_id();
        let current_branch = Self::get_current_branch(&repository_path)?;
        
        let session_state = GitSessionState {
            session_id,
            start_time: SystemTime::now(),
            current_branch: current_branch.clone(),
            original_branch: current_branch,
            edits_applied: Vec::new(),
            commit_history: Vec::new(),
            backup_points: Vec::new(),
        };

        Ok(GitIntegrationSystem {
            repository_path,
            config,
            branch_manager,
            commit_manager,
            conflict_resolver,
            backup_manager,
            session_state,
        })
    }

    /// Initialize a new SOMA editing session with Git integration
    pub fn start_session(&mut self, session_name: Option<String>) -> Result<String, String> {
        // Create session branch if enabled
        if self.config.session_branches {
            let branch_name = self.branch_manager.create_session_branch(
                session_name.clone()
            )?;
            self.session_state.current_branch = branch_name.clone();
            
            // Switch to session branch
            self.switch_branch(&branch_name)?;
        }

        // Create initial backup point
        let backup_point = self.backup_manager.create_backup_point(
            "Session start".to_string()
        )?;
        self.session_state.backup_points.push(backup_point);

        // Initialize commit manager for session
        self.commit_manager.initialize_session(&self.session_state.session_id)?;

        Ok(format!("Started SOMA Git session: {}", self.session_state.session_id))
    }

    /// Apply edits with Git integration
    pub fn apply_edits_with_git(
        &mut self, 
        edits: Vec<ModifiableEdit>,
        classifications: Vec<ClassifiedEdit>
    ) -> Result<Vec<GitOperationResult>, String> {
        let mut results = Vec::new();

        // Group edits by risk level from classification
        let mut critical_edits = Vec::new();
        let mut safe_edits = Vec::new();
        let mut experimental_edits = Vec::new();

        for (edit, classification) in edits.iter().zip(classifications.iter()) {
            match &classification.category {
                EditCategory::Critical { .. } => {
                    critical_edits.push((edit, classification));
                }
                EditCategory::Safe { .. } => {
                    safe_edits.push((edit, classification));
                }
                EditCategory::Experimental { .. } => {
                    experimental_edits.push((edit, classification));
                }
                EditCategory::Cosmetic { .. } => {
                    safe_edits.push((edit, classification));
                }
            }
        }

        // Apply safe edits first
        for (edit, classification) in safe_edits {
            let result = self.apply_single_edit_with_git(edit, classification)?;
            results.push(result);
        }

        // Apply experimental edits with additional backup
        if !experimental_edits.is_empty() {
            let backup_point = self.backup_manager.create_backup_point(
                "Before experimental edits".to_string()
            )?;
            self.session_state.backup_points.push(backup_point);

            for (edit, classification) in experimental_edits {
                let result = self.apply_single_edit_with_git(edit, classification)?;
                results.push(result);
            }
        }

        // Apply critical edits with maximum safeguards
        if !critical_edits.is_empty() {
            let backup_point = self.backup_manager.create_backup_point(
                "Before critical edits".to_string()
            )?;
            self.session_state.backup_points.push(backup_point);

            for (edit, classification) in critical_edits {
                let result = self.apply_single_edit_with_git(edit, classification)?;
                results.push(result.clone());
                
                // Immediate commit for critical edits
                if matches!(result, GitOperationResult::Success(_)) {
                    self.commit_current_changes(&format!(
                        "SOMA Critical Edit: {}", 
                        classification.reasoning
                    ))?;
                }
            }
        }

        Ok(results)
    }

    /// Apply a single edit with Git integration
    fn apply_single_edit_with_git(
        &mut self,
        edit: &ModifiableEdit,
        classification: &ClassifiedEdit
    ) -> Result<GitOperationResult, String> {
        // Check for conflicts before applying
        if let Some(conflicts) = self.check_for_conflicts(&edit.base_edit.file)? {
            return Ok(GitOperationResult::Conflict(conflicts));
        }

        // Apply the edit (this would integrate with your existing edit application logic)
        // For now, we'll simulate the edit application
        let file_path = &edit.base_edit.file;
        
        // Record the edit in session state
        self.session_state.edits_applied.push(format!("{:?}", edit.base_edit));

        // Auto-commit if enabled and edit is not critical
        if self.config.auto_commit && !matches!(classification.category, EditCategory::Critical { .. }) {
            let commit_message = self.commit_manager.generate_commit_message(edit, classification);
            match self.commit_current_changes(&commit_message) {
                Ok(commit_hash) => {
                    let commit = GitCommit {
                        hash: commit_hash.clone(),
                        message: commit_message,
                        timestamp: SystemTime::now(),
                        files_changed: vec![file_path.clone()],
                        soma_edit_ids: vec![format!("{:?}", edit)],
                    };
                    self.session_state.commit_history.push(commit);
                    Ok(GitOperationResult::Success(commit_hash))
                }
                Err(e) => Ok(GitOperationResult::Error(e)),
            }
        } else {
            Ok(GitOperationResult::Success("Edit applied successfully".to_string()))
        }
    }

    /// End the current SOMA editing session
    pub fn end_session(&mut self, merge_to_main: bool) -> Result<String, String> {
        // Create final backup
        let final_backup = self.backup_manager.create_backup_point(
            "Session end".to_string()
        )?;
        self.session_state.backup_points.push(final_backup);

        // Commit any pending changes
        if self.has_uncommitted_changes()? {
            self.commit_current_changes("SOMA Session final commit")?;
        }

        let session_summary = format!(
            "Session {} completed:\n- Edits applied: {}\n- Commits: {}\n- Backups: {}",
            self.session_state.session_id,
            self.session_state.edits_applied.len(),
            self.session_state.commit_history.len(),
            self.session_state.backup_points.len()
        );

        // Merge to main branch if requested
        if merge_to_main && self.config.session_branches {
            self.merge_session_to_main()?;
        }

        // Switch back to original branch
        if self.config.session_branches {
            self.switch_branch(&self.session_state.original_branch)?;
        }

        Ok(session_summary)
    }

    /// Check if path is a Git repository
    fn is_git_repository(path: &Path) -> bool {
        path.join(".git").exists()
    }

    /// Generate unique session ID
    fn generate_session_id() -> String {
        let timestamp = SystemTime::now()
            .duration_since(UNIX_EPOCH)
            .unwrap()
            .as_secs();
        format!("soma-{}", timestamp)
    }

    /// Get current Git branch
    fn get_current_branch(repo_path: &Path) -> Result<String, String> {
        let output = Command::new("git")
            .arg("branch")
            .arg("--show-current")
            .current_dir(repo_path)
            .output()
            .map_err(|e| format!("Failed to get current branch: {}", e))?;

        if output.status.success() {
            let branch = String::from_utf8_lossy(&output.stdout).trim().to_string();
            Ok(branch)
        } else {
            let error = String::from_utf8_lossy(&output.stderr);
            Err(format!("Git error: {}", error))
        }
    }

    /// Switch to specified branch
    fn switch_branch(&self, branch_name: &str) -> Result<(), String> {
        let output = Command::new("git")
            .arg("checkout")
            .arg(branch_name)
            .current_dir(&self.repository_path)
            .output()
            .map_err(|e| format!("Failed to switch branch: {}", e))?;

        if output.status.success() {
            Ok(())
        } else {
            let error = String::from_utf8_lossy(&output.stderr);
            Err(format!("Failed to switch to branch {}: {}", branch_name, error))
        }
    }

    /// Check for conflicts in specified file
    pub fn check_for_conflicts(&self, file_path: &str) -> Result<Option<ConflictInfo>, String> {
        // Check if file has merge conflicts
        let file_content = fs::read_to_string(file_path)
            .map_err(|e| format!("Failed to read file {}: {}", file_path, e))?;

        if file_content.contains("<<<<<<< HEAD") || 
           file_content.contains("=======") || 
           file_content.contains(">>>>>>> ") {
            
            let conflict_info = ConflictInfo {
                files: vec![file_path.to_string()],
                descriptions: vec!["Merge conflict detected".to_string()],
                suggested_strategy: ConflictStrategy::Interactive,
                classification_results: Vec::new(),
            };
            
            Ok(Some(conflict_info))
        } else {
            Ok(None)
        }
    }

    /// Commit current changes
    pub fn commit_current_changes(&self, message: &str) -> Result<String, String> {
        // Stage all changes
        let stage_output = Command::new("git")
            .arg("add")
            .arg(".")
            .current_dir(&self.repository_path)
            .output()
            .map_err(|e| format!("Failed to stage changes: {}", e))?;

        if !stage_output.status.success() {
            let error = String::from_utf8_lossy(&stage_output.stderr);
            return Err(format!("Failed to stage changes: {}", error));
        }

        // Commit changes
        let commit_output = Command::new("git")
            .arg("commit")
            .arg("-m")
            .arg(message)
            .current_dir(&self.repository_path)
            .output()
            .map_err(|e| format!("Failed to commit: {}", e))?;

        if commit_output.status.success() {
            // Get commit hash
            let hash_output = Command::new("git")
                .arg("rev-parse")
                .arg("HEAD")
                .current_dir(&self.repository_path)
                .output()
                .map_err(|e| format!("Failed to get commit hash: {}", e))?;

            if hash_output.status.success() {
                let hash = String::from_utf8_lossy(&hash_output.stdout).trim().to_string();
                Ok(hash)
            } else {
                Ok("unknown".to_string())
            }
        } else {
            let error = String::from_utf8_lossy(&commit_output.stderr);
            Err(format!("Failed to commit: {}", error))
        }
    }

    /// Check if there are uncommitted changes
    fn has_uncommitted_changes(&self) -> Result<bool, String> {
        let output = Command::new("git")
            .arg("status")
            .arg("--porcelain")
            .current_dir(&self.repository_path)
            .output()
            .map_err(|e| format!("Failed to check git status: {}", e))?;

        if output.status.success() {
            let status = String::from_utf8_lossy(&output.stdout);
            Ok(!status.trim().is_empty())
        } else {
            let error = String::from_utf8_lossy(&output.stderr);
            Err(format!("Git status error: {}", error))
        }
    }

    /// Merge session branch to main
    pub fn merge_session_to_main(&self) -> Result<(), String> {
        // Switch to main branch
        self.switch_branch("main")?;

        // Merge session branch
        let merge_output = Command::new("git")
            .arg("merge")
            .arg(&self.session_state.current_branch)
            .current_dir(&self.repository_path)
            .output()
            .map_err(|e| format!("Failed to merge: {}", e))?;

        if merge_output.status.success() {
            Ok(())
        } else {
            let error = String::from_utf8_lossy(&merge_output.stderr);
            Err(format!("Failed to merge session branch: {}", error))
        }
    }
}

// Implementation for sub-systems

impl BranchManager {
    pub fn new(repo_path: PathBuf) -> Result<Self, String> {
        Ok(BranchManager {
            repo_path,
            naming_strategy: BranchNamingStrategy::default(),
            auto_cleanup: true,
            max_branch_lifetime_days: 7,
        })
    }

    pub fn create_session_branch(&self, session_name: Option<String>) -> Result<String, String> {
        let branch_name = match &self.naming_strategy {
            BranchNamingStrategy::SessionTimestamp => {
                let timestamp = SystemTime::now()
                    .duration_since(UNIX_EPOCH)
                    .unwrap()
                    .as_secs();
                format!("soma-session-{}", timestamp)
            }
            BranchNamingStrategy::SessionId => {
                format!("soma-session-{}", 
                    session_name.unwrap_or_else(|| "default".to_string()))
            }
            BranchNamingStrategy::UserTimestamp => {
                let timestamp = SystemTime::now()
                    .duration_since(UNIX_EPOCH)
                    .unwrap()
                    .as_secs();
                format!("soma-user-{}", timestamp)
            }
            BranchNamingStrategy::Custom(pattern) => {
                pattern.clone()
            }
        };

        // Create new branch
        let output = Command::new("git")
            .arg("checkout")
            .arg("-b")
            .arg(&branch_name)
            .current_dir(&self.repo_path)
            .output()
            .map_err(|e| format!("Failed to create branch: {}", e))?;

        if output.status.success() {
            Ok(branch_name)
        } else {
            let error = String::from_utf8_lossy(&output.stderr);
            Err(format!("Failed to create branch: {}", error))
        }
    }
}

impl CommitManager {
    pub fn new(repo_path: PathBuf) -> Result<Self, String> {
        let mut message_templates = HashMap::new();
        message_templates.insert("safe".to_string(), "SOMA Safe Edit: {}".to_string());
        message_templates.insert("critical".to_string(), "SOMA Critical Edit: {}".to_string());
        message_templates.insert("experimental".to_string(), "SOMA Experimental Edit: {}".to_string());
        message_templates.insert("cosmetic".to_string(), "SOMA Cosmetic Edit: {}".to_string());

        Ok(CommitManager {
            repo_path,
            message_templates,
            auto_stage: true,
            sign_commits: false,
        })
    }

    pub fn initialize_session(&self, _session_id: &str) -> Result<(), String> {
        // Initialize session-specific commit settings
        Ok(())
    }

    pub fn generate_commit_message(&self, edit: &ModifiableEdit, classification: &ClassifiedEdit) -> String {
        let edit_type = match &classification.category {
            EditCategory::Critical { .. } => "critical",
            EditCategory::Safe { .. } => "safe",
            EditCategory::Experimental { .. } => "experimental",
            EditCategory::Cosmetic { .. } => "cosmetic",
        };

        let default_template = "SOMA Edit: {}".to_string();
        let template = self.message_templates.get(edit_type)
            .unwrap_or(&default_template);

        let description = if !classification.reasoning.is_empty() {
            &classification.reasoning
        } else {
            &format!("Edit to {}", edit.base_edit.file)
        };

        template.replace("{}", description)
    }
}

impl ConflictResolver {
    pub fn new(repo_path: PathBuf) -> Result<Self, String> {
        Ok(ConflictResolver {
            repo_path,
            strategies: vec![ConflictStrategy::Interactive],
            use_classification: true,
            cognitive_resolution: true,
        })
    }
}

impl BackupManager {
    pub fn new(repo_path: PathBuf) -> Result<Self, String> {
        let backup_dir = repo_path.join(".soma-backups");
        
        // Create backup directory if it doesn't exist
        if !backup_dir.exists() {
            fs::create_dir_all(&backup_dir)
                .map_err(|e| format!("Failed to create backup directory: {}", e))?;
        }

        Ok(BackupManager {
            repo_path,
            backup_dir,
            compress_backups: true,
            incremental: true,
        })
    }

    pub fn create_backup_point(&self, description: String) -> Result<BackupPoint, String> {
        let timestamp = SystemTime::now();
        let id = format!("backup-{}", timestamp.duration_since(UNIX_EPOCH).unwrap().as_secs());
        
        // Get current commit hash as state hash
        let hash_output = Command::new("git")
            .arg("rev-parse")
            .arg("HEAD")
            .current_dir(&self.repo_path)
            .output()
            .map_err(|e| format!("Failed to get state hash: {}", e))?;

        let state_hash = if hash_output.status.success() {
            String::from_utf8_lossy(&hash_output.stdout).trim().to_string()
        } else {
            "unknown".to_string()
        };

        // Try to create Git stash as backup (only if there are changes)
        let _stash_output = Command::new("git")
            .arg("stash")
            .arg("push")
            .arg("-m")
            .arg(&format!("SOMA Backup: {}", description))
            .current_dir(&self.repo_path)
            .output()
            .map_err(|e| format!("Failed to create backup stash: {}", e))?;

        // Stash command succeeds even if there are no changes to stash
        // We'll create the backup point regardless
        Ok(BackupPoint {
            id,
            timestamp,
            state_hash,
            backup_path: self.backup_dir.clone(),
            description,
        })
    }
}

// Tests
#[cfg(test)]
mod tests {
    use super::*;
    use std::fs;
    use tempfile::TempDir;

    fn create_test_git_repo() -> (TempDir, PathBuf) {
        let temp_dir = TempDir::new().unwrap();
        let repo_path = temp_dir.path().to_path_buf();
        
        // Initialize git repository
        Command::new("git")
            .arg("init")
            .current_dir(&repo_path)
            .output()
            .unwrap();
            
        // Configure git user for tests
        Command::new("git")
            .args(&["config", "user.name", "SOMA Test"])
            .current_dir(&repo_path)
            .output()
            .unwrap();
            
        Command::new("git")
            .args(&["config", "user.email", "soma@test.com"])
            .current_dir(&repo_path)
            .output()
            .unwrap();

        // Create an initial commit to have a valid Git history
        let initial_file = repo_path.join("README.md");
        fs::write(&initial_file, "# SOMA Test Repository\n").unwrap();
        
        Command::new("git")
            .args(&["add", "README.md"])
            .current_dir(&repo_path)
            .output()
            .unwrap();
            
        Command::new("git")
            .args(&["commit", "-m", "Initial commit"])
            .current_dir(&repo_path)
            .output()
            .unwrap();

        (temp_dir, repo_path)
    }

    #[test]
    fn test_git_integration_system_creation() {
        let (_temp_dir, repo_path) = create_test_git_repo();
        
        let git_system = GitIntegrationSystem::new(repo_path);
        assert!(git_system.is_ok());
    }

    #[test]
    fn test_session_start_and_end() {
        let (_temp_dir, repo_path) = create_test_git_repo();
        
        let mut git_system = GitIntegrationSystem::new(repo_path).unwrap();
        
        // Start session
        let session_result = git_system.start_session(Some("test-session".to_string()));
        assert!(session_result.is_ok());
        
        // End session
        let end_result = git_system.end_session(false);
        assert!(end_result.is_ok());
    }

    #[test]
    fn test_branch_manager() {
        let (_temp_dir, repo_path) = create_test_git_repo();
        
        let branch_manager = BranchManager::new(repo_path).unwrap();
        let branch_name = branch_manager.create_session_branch(Some("test".to_string()));
        assert!(branch_name.is_ok());
    }

    #[test]
    fn test_backup_manager() {
        let (_temp_dir, repo_path) = create_test_git_repo();
        
        let backup_manager = BackupManager::new(repo_path).unwrap();
        let backup_point = backup_manager.create_backup_point("Test backup".to_string());
        assert!(backup_point.is_ok());
    }

    #[test]
    fn test_conflict_detection() {
        let (_temp_dir, repo_path) = create_test_git_repo();
        
        // Create a file with conflict markers
        let test_file = repo_path.join("test_conflict.txt");
        fs::write(&test_file, "line1\n<<<<<<< HEAD\nlocal change\n=======\nremote change\n>>>>>>> branch\nline3").unwrap();
        
        let git_system = GitIntegrationSystem::new(repo_path).unwrap();
        let conflicts = git_system.check_for_conflicts(&test_file.to_string_lossy()).unwrap();
        assert!(conflicts.is_some());
    }

    #[test]
    fn test_git_config_default() {
        let config = GitConfig::default();
        assert!(config.auto_commit);
        assert!(config.session_branches);
        assert_eq!(config.backup_frequency_minutes, 30);
    }
}