const std = @import("std");

pub fn build(b: *std.Build) void {
    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});

    const install_all = b.step("install-all", "Install all days");
    const run_all = b.step("run-all", "Run all days");
    const num_days = b.option(u32, "num-days", "The number of days to process") orelse 25;

    var day: u8 = 1;
    while (day <= num_days) : (day += 1) {
        const name = b.fmt("day{d}", .{day});
        const file = b.fmt("{s}.zig", .{name});

        const exe = b.addExecutable(.{
            .name = name,
            .root_source_file = b.path(file),
            .target = target,
            .optimize = optimize,
        });

        const install_exe = b.addInstallArtifact(exe, .{});
        const install_step = b.step(b.fmt("install_{s}", .{name}), b.fmt("Install {s}", .{name}));
        install_step.dependOn(&install_exe.step);
        install_all.dependOn(&install_exe.step);

        const run_exe = b.addRunArtifact(exe);
        const run_step = b.step(b.fmt("run_{s}", .{name}), b.fmt("Run {s}", .{name}));
        run_step.dependOn(&run_exe.step);
        run_all.dependOn(&run_exe.step);
    }
}