run

#! /bin/bash

# Runs a target solution file, compiling if necessary.
#
# Supports:
#   - JavaScript
#   - Python
#   - C
#   - Rust
#   - Clojure
#
# Example:
#   ./run 01-some-puzzle/1.c

SOLUTION_PATH="$1"

if [ -z SOLUTION_PATH ]; then
    echo "Must provide a path to a solution file!"
    exit 1
fi

SOLUTION_NAME="$(basename "$1")"
SOLUTION_NAME="${SOLUTION_NAME%.*}"
SOLUTION_EXTENSION="${1##*.}"

SOLUTION_DIR="$(dirname "$1")"
BUILD_DIR="$SOLUTION_DIR/build"

## Utilities ##
function make_build_dir {
    if [ ! -d "$BUILD_DIR" ]; then
        mkdir "$BUILD_DIR"
    fi

    if [ -n $1 ]; then
        if [ ! -d "$BUILD_DIR/$1" ]; then
            mkdir "$BUILD_DIR/$1"
        fi
    fi
}

## Runners ##
function run_js {
    npm start "$SOLUTION_PATH"
}

function run_py {
    python "$SOLUTION_PATH"
}

function run_c {
    local BUILD_PATH="$BUILD_DIR/c/$SOLUTION_NAME"
    make_build_dir c

    gcc "$SOLUTION_PATH" -o "$BUILD_PATH"
    "./$BUILD_PATH"
}

function run_rs {
    local BUILD_PATH="$BUILD_DIR/rs/$SOLUTION_NAME"
    make_build_dir rs

    rustc "$SOLUTION_PATH" -o "$BUILD_PATH"
    "./$BUILD_PATH"
}

function run_clj {
    clj -M "$SOLUTION_PATH"
}

## Run Solution ##
if [ $SOLUTION_EXTENSION == 'js' ]; then
    run_js
elif [ $SOLUTION_EXTENSION == 'py' ]; then
    run_py
elif [ $SOLUTION_EXTENSION == 'c' ]; then
    run_c
elif [ $SOLUTION_EXTENSION == 'rs' ]; then
    run_rs
elif [ $SOLUTION_EXTENSION == 'clj' ]; then
    run_clj
else
    echo "File type not supported: .$SOLUTION_EXTENSION"
    exit 1
fi