#!/bin/bash

set -e

CC="gcc"
CFLAGS="-DWRATHINT -I./include -fPIC"
OBJ_BUILD="build/"
BIN_DIR="bin/"
HED_DIR="include"

build() {
    echo "Building stdWullie..."

    # Find all C source files
    mapfile -t SRC < <(find src -type f -name '*.c')

    # Compile each source file
    OBJ=()

    for src in "${SRC[@]}"; do
        obj="${src%.c}.o"

        echo "Compiling $src -> $obj"
        "$CC" $CFLAGS -c "$src" -o "$obj"

        OBJ+=("$obj")
    done

    # Create output directories
    mkdir "$OBJ_BUILD"
    mkdir "$BIN_DIR"

    # Link shared library
    echo "Linking libstdWullie.so..."
    "$CC" -nostdlib -shared -o libstdWullie.so \
        -fno-stack-protector \
        "${OBJ[@]}"

    # Move object files
    mv "${OBJ[@]}" "$OBJ_BUILD"

    # Move library
    mv libstdWullie.so "$BIN_DIR"

    # Copy header
    cp "$HED_DIR/stdWullie.h" "$BIN_DIR"

    # Copy header directory
    cp -r "$HED_DIR/stdWullie/" "$BIN_DIR"

    echo "Build complete."
}

clean() {
    echo "Cleaning..."

    rm -rf "$OBJ_BUILD" "$BIN_DIR"

    build
}

case "${1:-build}" in
    build|stdWullie)
        build
        ;;
    clean)
        clean
        ;;
    *)
        echo "Usage: $0 {build|stdWullie|clean}"
        exit 1
        ;;
esac