#!/bin/bash

# Archive eXtractor

error() {
    echo "Error: $1" >&2
}

run() {
    echo "Debug: $@"
    $@
}

if [ ! -f "$1" ]; then 
    error "No file provided"
    exit 1
fi

BN="${1%.*}"
BASE="${1%.*}"
TRY=0

while [ -d "$BASE" ]; do
    if [ $TRY -gt 10 ]; then
        error "Already Exists (10)"
        exit 1
    fi
    error "Already exists ($BASE)"
    TRY=$((TRY + 1))
    BASE="${BN}_${TRY}"
done

FILE_TYPE=$(file --mime-type -b "$1")
EXT="${1##*.}"

case "$FILE_TYPE" in
    application/x-tar) FORMAT="tar" ;;
    application/zip) FORMAT="zip" ;;
    application/x-7z-compressed) FORMAT="7z" ;;
    *)
        case "$EXT" in
            tar.gz|tar.bz2|tar.xz|tar.zst|tgz|tbz2|txz) FORMAT="tar" ;;
            gz) FORMAT="gzip" ;;
            bz2) FORMAT="bzip2" ;;
            xz) FORMAT="xz" ;;
            *)
                error "Unsupported file format"
                exit 1
                ;;
        esac
        ;;
esac

run mkdir "$BASE"

case $FORMAT in
    tar)
        run tar -xvf "$1" -C "$BASE"
        ;;
    zip)
        run unzip "$1" -d "$BASE"
        ;;
    7z)
        run 7z x "$1" -o"$BASE"
        ;;
    gzip)
        run gunzip -c "$1" > "$BASE/$(basename "$BN")"
        ;;
    bzip2)
        run bunzip2 -c "$1" > "$BASE/$(basename "$BN")"
        ;;
    xz)
        run unxz -c "$1" > "$BASE/$(basename "$BN")"
        ;;
    *)
        error "Unexpected error occurred"
        exit 1
        ;;
esac