// Optional Format Processors - 3 Optional Formats (Controversial)

// Stub implementations for Phase 1 framework
// Actual implementations will be added in Phase 2 with warnings

use crate::archive::{ArchiveFormat, ArchiveProcessor, ArchiveMetadata, ArchiveEntry, ExtractResult};
use anyhow::Result;
use std::path::Path;

/// RAR Processor (⚠️ Legal risk - Phase 2)
pub struct RarProcessor;

impl RarProcessor {
    pub fn new() -> Self {
        Self
    }
}

impl ArchiveProcessor for RarProcessor {
    fn format(&self) -> ArchiveFormat {
        ArchiveFormat::Rar
    }
    
    fn open(&mut self, path: &Path) -> Result<ArchiveMetadata> {
        // Phase 2: Implement RAR opening with unrar library
        Ok(ArchiveMetadata {
            format: ArchiveFormat::Rar,
            total_files: 0,
            total_size: 0,
            compressed_size: 0,
            compression_ratio: 0.0,
            is_encrypted: false,
            is_multi_volume: false,
            created_time: None,
        })
    }
    
    fn list_entries(&self) -> Result<Vec<ArchiveEntry>> {
        Ok(Vec::new())
    }
    
    fn extract_file(&self, entry_path: &Path, output: &mut Vec<u8>) -> Result<u64> {
        Ok(0)
    }
    
    fn extract_all(&self, output_dir: &Path) -> Result<ExtractResult> {
        Ok(ExtractResult::new())
    }
    
    fn can_process(format: ArchiveFormat) -> bool {
        format == ArchiveFormat::Rar
    }
}

/// XZ Processor (⚠️ External dependency - Phase 2)
pub struct XzProcessor;

impl XzProcessor {
    pub fn new() -> Self {
        Self
    }
}

impl ArchiveProcessor for XzProcessor {
    fn format(&self) -> ArchiveFormat {
        ArchiveFormat::Xz
    }
    
    fn open(&mut self, path: &Path) -> Result<ArchiveMetadata> {
        Ok(ArchiveMetadata {
            format: ArchiveFormat::Xz,
            total_files: 1,
            total_size: 0,
            compressed_size: 0,
            compression_ratio: 0.0,
            is_encrypted: false,
            is_multi_volume: false,
            created_time: None,
        })
    }
    
    fn list_entries(&self) -> Result<Vec<ArchiveEntry>> {
        Ok(Vec::new())
    }
    
    fn extract_file(&self, entry_path: &Path, output: &mut Vec<u8>) -> Result<u64> {
        Ok(0)
    }
    
    fn extract_all(&self, output_dir: &Path) -> Result<ExtractResult> {
        Ok(ExtractResult::new())
    }
    
    fn can_process(format: ArchiveFormat) -> bool {
        format == ArchiveFormat::Xz
    }
}

/// 7z Processor (⚠️ Unstable library - Phase 2)
pub struct SevenZProcessor;

impl SevenZProcessor {
    pub fn new() -> Self {
        Self
    }
}

impl ArchiveProcessor for SevenZProcessor {
    fn format(&self) -> ArchiveFormat {
        ArchiveFormat::SevenZ
    }
    
    fn open(&mut self, path: &Path) -> Result<ArchiveMetadata> {
        Ok(ArchiveMetadata {
            format: ArchiveFormat::SevenZ,
            total_files: 0,
            total_size: 0,
            compressed_size: 0,
            compression_ratio: 0.0,
            is_encrypted: false,
            is_multi_volume: false,
            created_time: None,
        })
    }
    
    fn list_entries(&self) -> Result<Vec<ArchiveEntry>> {
        Ok(Vec::new())
    }
    
    fn extract_file(&self, entry_path: &Path, output: &mut Vec<u8>) -> Result<u64> {
        Ok(0)
    }
    
    fn extract_all(&self, output_dir: &Path) -> Result<ExtractResult> {
        Ok(ExtractResult::new())
    }
    
    fn can_process(format: ArchiveFormat) -> bool {
        format == ArchiveFormat::SevenZ
    }
}