const std = @import("std");
const print = std.debug.print;

const day01 = @import("day01.zig");
const day02 = @import("day02.zig");
const day03 = @import("day03.zig");
const day04 = @import("day04.zig");
const day05 = @import("day05.zig");
const day06 = @import("day06.zig");
const day07 = @import("day07.zig");
const day08 = @import("day08.zig");

pub fn main() !void {
    if (std.os.argv.len != 3) {
        print("Usage: {s} <day> <part> < <input> \n", .{std.os.argv[0]});
        return;
    }

    var stdin_buf: [1024 * 1024]u8 = undefined;
    var reader = std.fs.File.stdin().reader(&stdin_buf);
    const stdin: *std.Io.Reader = &reader.interface;

    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    const allocator = gpa.allocator();
    defer {
        _ = gpa.deinit();
    }

    const args = try std.process.argsAlloc(allocator);
    defer std.process.argsFree(allocator, args);

    const day = std.fmt.parseInt(usize, args[1], 10) catch {
        print("Not valid day format\n: {s}", .{args[1]});
        return;
    };

    try switch (day) {
        1 => day01.solve(args[2], stdin, allocator),
        2 => day02.solve(args[2], stdin, allocator),
        3 => day03.solve(args[2], stdin, allocator),
        4 => day04.solve(args[2], stdin, allocator),
        5 => day05.solve(args[2], stdin, allocator),
        6 => day06.solve(args[2], stdin, allocator),
        7 => day07.solve(args[2], stdin, allocator),
        8 => day08.solve(args[2], stdin, allocator),
        else => print("Day not yet implemented", .{}),
    };
}