fs = require "fs"
path = require "path"
_  = require "underscore"

compile = require "./compile"
repl = require "./repl"

console = global.console
process = global.process

this_program_filename = path.basename __filename
this_program_regex = new RegExp (this_program_filename + "$")
exe_index = _.indexOf (_.map process.argv [ arg |
    ret this_program_regex.test arg
]) true
input_file = process.argv @ (exe_index + 1)
output_file = process.argv @ (exe_index + 2)
debug = process.argv @ (exe_index + 3) == "--debug"

if (input_file == '-i') [
    console.log "Aletheia repl\n"
    repl.start {}
] else [

    if (exe_index < 0 or input_file == undefined or output_file == undefined) [
        console.log "usage: alc input_file.al output_file.js"
        process.exit 1
    ]

    console.log ("Compiling '" + input_file + "' into '" + output_file + "':")

    program = fs.readFileSync input_file {encoding: "utf8"}
    gen = compile program
    code = gen.toString()

    fs.writeFileSync output_file code {encoding: "utf8"}
    console.log (
        "Finished compiling '" +
        input_file +
        "' into '" +
        output_file +
        "'."
    )
]