setup.ion

#!/usr/bin/env ion

# Get the root directory of the cargo project.
let PROJECT_DIR = $parent(@split($(cargo locate-project), '"')[3])

# If the destination for the binary was not give, set it.
if not exists ${env::DESTDIR}
    let DESTDIR = "/usr/bin/"
end

# If the share directory was not given, set it.
if not exists ${env::SHAREDIR}
    let SHAREDIR = "/usr/share/ion/";
end

# Ensure that we begin execution with this as the working directory.
cd $PROJECT_DIR

fn print_option definition description
    echo "    ${c::bold}- ${c::0x0CF}$definition: ${c::reset}$description"
end

# Print all available options
fn show_options
    echo -e "${c::0x0F6}Available options for this script are:${c::reset}"
    print_option "build ion" "      Build the Ion shell"
    print_option "build docs" "     Build the Ion mdBook"
    print_option "install ion" "    Install the Ion Shell"
    print_option "install docs" "   Install the Ion mdBook"
    print_option "install plugins" "Install official Ion plugins"
    print_option "uninstall ion" "  Removes Ion from System"
end

# In case a bad argument was supplied, this will be used.
fn bad_arg argument
    echo -e "${c::0xF60,bold}Error: ${c::0xF06}`$argument`${c::0xF60} is \
        not a valid command.${c::reset}"
    show_options
    exit
end

# Arguments are required!
if test 1 -eq $len(@args)
    echo -e "${c::0xF60,bold}Error: must proved command.${c::reset}"
    show_options
    exit
end

# Rust/Cargo is required!
if not exists -b "cargo"
    echo "${c::0xF60,bold}Error: Rust/Cargo is not installed."
    echo "${c::0x09F}Hint: `curl https://sh.rustup.rs -sSf | sh`"
    exit
end

# Nightly Rust is currently required
if not exists $(rustc --version | grep nightly)
    echo "${c::0xF60,bold}Error: Project currently requires a nightly version Rust."
    echo "${c::0x09F}Hint: `rustup default nightly`"
    exit
end

# The first and second argument will determine what the user wants.
match "@args[1..3]"
    case "build ion"
        cargo build --release
    case "build docs"
        if not exists -b "mdbook"
            echo "${c::0x09F}Installing mdbook from Crates.io${c::reset}"
            cargo install mdbook --force
        end
        cd manual && mdbook build
    case "install ion"
        sudo install target/release/ion ${DESTDIR}/ion
    case "install docs"
        echo "${c::0xF30,bold}Installing documentation with root${c::reset}"
        sudo mkdir -p ${SHAREDIR}/docs/
        sudo cp manual/book/* ${SHAREDIR}/docs/ -R
    case "install plugins"
        git clone https://github.com/mmstick/ion-plugins
        cd ion-plugins && ion install.ion
    case "uninstall ion"
        echo "${c::0xF30,bold}Removing ${c::0x09F}${DESTDIR}${c::0xF30}/ion \
            and ${c::0xF30}${SHAREDIR}${c::reset}"
        sudo rm ${DESTDIR}/ion
        sudo rm ${SHAREDIR} -R
    case _
        bad_arg "@args[1..3]"
end