package io.github.applecommander.acx.fileutil;

import java.util.Date;
import java.util.Map;
import java.util.Optional;

import com.webcodepro.applecommander.storage.DiskFullException;
import com.webcodepro.applecommander.storage.filters.PascalTextFileFilter;
import com.webcodepro.applecommander.storage.os.pascal.PascalFileEntry;

public class PascalFileEntryReaderWriter implements FileEntryReader, FileEntryWriter {
    private static final PascalTextFileFilter TEXT_FILTER = new PascalTextFileFilter();
    private static final Map<String,String> FILE_TYPES;
    static {
        FILE_TYPES = Map.of(
                // Pascal => Prodos
                "xdskfile", "BAD",  // TODO we should skip bad block files
                "CODE", "BIN",      // TODO is there an address?
                "TEXT", "TXT",
                "INFO", "TXT",      // TODO We should skip debugger info
                "DATA", "BIN",
                "GRAF", "BIN",      // TODO compressed graphics image
                "FOTO", "BIN",      // TODO screen image
                "securedir", "BIN", // TODO is this even implemented
                
                // Prodos => Pascal
                "BIN", "DATA",
                "TXT", "TEXT"
            );
    }
    
    private PascalFileEntry fileEntry;
    
    public PascalFileEntryReaderWriter(PascalFileEntry fileEntry) {
        this.fileEntry = fileEntry;
    }
    
    @Override
    public Optional<String> getFilename() {
        return Optional.ofNullable(fileEntry.getFilename());
    }
    @Override
    public void setFilename(String filename) {
        fileEntry.setFilename(filename);
    }
    
    @Override
    public Optional<String> getProdosFiletype() {
        return Optional.ofNullable(FILE_TYPES.get(fileEntry.getFiletype()));
    }
    @Override
    public void setProdosFiletype(String filetype) {
        fileEntry.setFiletype(FILE_TYPES.getOrDefault(filetype, "DATA"));
    }
    
    @Override
    public Optional<Date> getLastModificationDate() {
        return Optional.ofNullable(fileEntry.getModificationDate());
    }
    @Override
    public void setLastModificationDate(Date date) {
        fileEntry.setModificationDate(date);
    }
    
    @Override
    public Optional<byte[]> getFileData() {
        if ("TEXT".equals(fileEntry.getFiletype())) {
            return Optional.ofNullable(TEXT_FILTER.filter(fileEntry));
        }
        else {
            return Optional.ofNullable(fileEntry.getFileData());
        }
    }
    @Override
    public void setFileData(byte[] data) {
        try {
            fileEntry.setFileData(data);
        } catch (DiskFullException e) {
            throw new RuntimeException(e);
        }
    }
}