const std = @import("std");
const options = @import("options");
const rom_count = options.roms.len;

pub const ROM = struct {
    name: []const u8,
    data: []const u8,
};

pub fn listROMs() [options.roms.len]ROM {
    var roms: [options.roms.len]ROM = undefined;

    for (0.., options.roms) |i, file| {
        const extension = std.mem.lastIndexOfScalar(u8, file, '.') orelse file.len;
        const slash = std.mem.lastIndexOfScalar(u8, file, '/') orelse -1;

        const name = file[(slash+1)..extension];
        roms[i] = ROM{
            .name = name,
            .data = @embedFile(file)
        };
    }

    return roms;
}

pub fn findIndexbyName(roms: []const ROM, name: []const u8) ?usize {
    for (0.., roms) |i, rom| {
        if (std.mem.eql(u8, rom.name, name)) {
            return i;
        }
    }
    return null;
}