#!/bin/bash

echo "|================|        NightLoader Build-Script v0.1        |================|"
echo " "
echo " "

BUILD_ROOT=$PWD
QUIET="FALSE"
VERBOSE="FALSE"



if [[ $2 == "-q" ]]; then
    QUIET="TRUE"
fi

if [[ $3 == "-q" ]]; then
    QUIET="TRUE"
fi

if [[ $4 == "-q" ]]; then
    QUIET="TRUE"
fi

if [[ $5 == "-q" ]]; then
    QUIET="TRUE"
fi



if [[ $2 == "-v" ]]; then
    VERBOSE="TRUE"
fi

if [[ $3 == "-v" ]]; then
    VERBOSE="TRUE"
fi

if [[ $4 == "-v" ]]; then
    VERBOSE="TRUE"
fi

if [[ $5 == "-v" ]]; then
    VERBOSE="TRUE"
fi


if [[ $QUIET == "TRUE" ]]; then
    if [[ $VERBOSE == "TRUE" ]]; then
        echo "ERROR: '-v' and 'q' cannot coexist!"
        exit
    fi
fi


log() {
    if [[ $QUIET -eq "TRUE" ]]; then
        return
    fi
    echo $1
}



# START OF ACTION FUNCTIONS

initialize_build_environment() {
    
    cd $BUILD_ROOT/libs/original/posix-uefi
    bash build.bash $BUILD_ROOT
}

clean_build_environment() {
    echo "TODO: Clean Environment"
}



build_debug() {
    
    # Legacy Bootloader for old BIOS-platforms
    log "Building legacy-bootloader for target 'debug'"
    
    # Build the stage-1 bootloader; the first disk-sector.
    cd code/legacy-bios/bootsector
    bash build.bash $BUILD_ROOT "debug"
    cd ..
    
    # Build the stage 2 - starter; it is just there to jump
    # to the *executable file* which the UEFI-codepath also uses.
    cd starter
    bash build.bash $BUILD_ROOT "debug"
    cd ../../../
    
    log "Legacy-bootloader was built for target 'debug'"
    log " "
    log " "
    log " "
    
    log "Building UEFI-bootloader for target 'debug'"
    
    cd code/uefi/stage_2
    bash build.bash $BUILD_ROOT "debug"
    log "UEFI-bootloader was built for target 'debug'"
    log " "
    log " "
    log " "
    
    cd ../../../
    
    
    
    log "Creating disk image for a basic NightLoader-installation"
    
    # Create the partition's image-file by allocating 256MB and
    # creating a FAT32 - partition which then resides there. 
    truncate -s 256M partition.bin
    mkfs.fat -F32 -nNIGHT partition.bin
    
    # Mount the partition-image to a specific directory (needs
    # root-permissions), copy over the freshly built binaries to
    # the path they belobng to and unmount the partition. 
    mount partition.bin partition/
    mkdir -p partition/nightloader/
    cp starter.bin partition/
    umount partition.bin
    mv partition.bin build/objects/
    
    # Create a disk image by including the first disk sector.
    cat build/objects/bootsector.bin        >   nightloader.bin
    cat build/objects/partition.bin         >>  nightloader.bin
    
    log " "
    log " "
    log "Finished building the NightLoader!"
    log " "
}

build_release() {
   echo "TODO: Release-Build"
}

build_all() {
    build_debug
    build_release
}



print_help() {
    echo "NightLoader Short Help for 'build.bash', for a more thorough help use '$0 manual'"
    echo " "
    echo "Available Commands are: 'all', 'clean', 'debug', 'help', 'init', 'manual' 'release'"
    echo "| all:      Initializes the environment (if needed) build all targets (debug & release)"
    echo "|           but does NOT clean up the environment's build-files, etc.. The version of"
    echo "|           the build is needed as an argument. See: Example [1]"
    echo "|"
    echo "| clean:    Removes all cached files."
    echo "|"
    echo "| debug:    Builds the 'debug'-target. The 'debug'-target has more information which"
    echo "|           is needed for contributing to the NightLoader. This shouldn't be used for"
    echo "|           actual usage as it bloats the executable size quite a bit."
    echo "|"
    echo "| init:     Updates & Initializes the dependencies and performs a one-time setup."
    echo "|           There can be one argument which tells which dependency should be updated."
    echo "|           Possible values are:"
    echo "|           - 'posix-uefi':         Clone and build POSIX-UEFI."
    echo "|           - 'all-depends':        Update (download) and build all dependencies."
    echo "|           For further information, see: Examples [4] [5]"
    echo "|"
    echo "| manual:   A longer manual to the NightLoader, referencing the documentation in the"
    echo "|             './docs/'-folder and making it interactive."
    echo "|           For further information, see: Examples [6] [7] [8] [9] [10]"
    echo "|"
    echo "| release:  Builds the 'release'-target. This target should be used for building the"
    echo "|           optimized version of the NightLoader which can actually be suitable for"
    echo "|           using in, for example, a hobbyist's operating system. This requires the"
    echo "|           current version of the NightLoader as an argument. See: Example [11]"
    echo " "
    echo "Additional options:"
    echo "| -q : Disable as much output as possible"
    echo "| -v : Output as much as possible; will be passed to all sub-commands"
    echo " "
    echo "Examples:"
    echo "[1]  \$ $1 all v0.1.0"
    echo "[2]  \$ $1 clean"
    echo "[3]  \$ $1 debug v0.1.0"
    echo "[4]  \$ $1 init all-depends"
    echo "[5]  \$ $1 init posix-uefi"
    echo "[6]  \$ $1 manual"
    echo "[7]  \$ $1 manual interactive"
    echo "[8]  \$ $1 manual list"
    echo "[9]  \$ $1 manual bios"
    echo "[10] \$ $1 manual uefi"
    echo "[11] \$ $1 release v0.1.0"
    echo "[12] \$ $1 help                       # You obviously alreay know this. ^^"
}

print_manual() {
    echo "TODO: Print Manual"
}



# START OF ACTION CHOOSER

case $1 in
    "all")
        build_all "$0"
    ;;
    "clean")
        clean_build_environment "$0"
    ;;
    "debug")
        build_debug "$0"
    ;;
    "help")
        print_help "$0"
    ;;
    "init")
        initialize_build_environment "$0"
    ;;
    "manual")
        print_manual "$0"
    ;;
    "release")
        build_release "$0"
    ;;
esac