#!/usr/bin/python
OUTPUT="rtmc.lua";
FILES= [
    "main.lua",
    "log.lua",
    "json.lua",
    "updater.lua"
]

VERSION="1.0.0d"
MINIMISE=True

def read_file(p: str) -> str:
    buf = "";
    with open("src/"+p, "r", encoding="utf-8") as f:
        buf += f"rawset(__BUNDLER_FILES, \"{p.replace(".lua", "")}\", function ()\n";
        for line in f.readlines():
            buf += "    " + line;
        buf += "\nend)";
        if not MINIMISE:
            buf += f"-- FILE END: {p} --\n";
        else:
            buf += "\n";
    return buf;

def minimise(buf: str) -> str:
    newbuf = "";
    for line in buf.splitlines():
        if line.strip().startswith("--"):
            continue;
        if line.strip() == "":
            continue
        newbuf += line + "\n";
    return newbuf;

# def get_hash(buf: str) -> str:
#    hasher = hashlib.sha1();
#
#    hasher.update(bytes(buf, "utf-8"));
#    return hasher.hexdigest();

REQ_HEADER=f"""local __BUNDLER_FILES = {{}}
local __VERSION = "{VERSION}"
local __DEFAULT_IMPORT = require
local require = function(path)
    if __BUNDLER_FILES[path] then
        return __BUNDLER_FILES[path]()
    elseif __BUNDLER_FILES[path .. ".lua"] then
        return __BUNDLER_FILES[path .. ".lua"]()
    else
        return __DEFAULT_IMPORT(path)
    end
end
"""

REQ_FOOTER="""
if pcall(debug.getlocal, 4, 1) then
    local exports = {};
    for k, v in pairs(__BUNDLER_FILES) do
        if k ~= "main" then
            exports[k] = v();
        end
    end
    return exports;
else
    require("main").main()
end
"""


def main():
    buf = ""
    buf += REQ_HEADER;
    # buf += "local __UPDATE_HASH = __BUNDLER_REPLACE_HASH__\n";
    for file in FILES:
        print(f"=== FILE: {file}");
        buf += read_file(file);

    buf += REQ_FOOTER;

    if MINIMISE:
        buf = minimise(buf);
    #update_hash = get_hash(buf);
    # buf = buf.replace("__BUNDLER_REPLACE_HASH__", f"\"{update_hash}\"");

    #print(f"=== UPDATE HASH: {update_hash}")
    with open(OUTPUT, "w", encoding="utf-8") as f:
        f.write(buf);
    print("DONE");

if __name__ == "__main__":
    main();