const std = @import("std");
const File = std.Io.File;
const Clip = @import("Clip.zig");

pub fn main(init: std.process.Init) !void {
    const io = init.io;

    // This program should not be run interactively
    if (try File.stdin().isTty(io)) {
        std.debug.print("This program is not meant to be run interactively. Please pipe into this program.\n", .{});
        std.process.exit(1);
    }

    // We want to avoid doing as many allocations as possible so having raw
    // pages with it being larger should be totally fine
    var clip = try Clip.OSC52.init(std.heap.page_allocator, init.io, std.heap.pageSize());
    defer clip.free();

    run(io, clip);
}

pub fn run(io: *std.Io, clip: anytype) !void {
    std.debug.print("\x1b[0;32mCopying the following to Pasteboard\x1b[0m\n", .{});

    var buf: [4096]u8 = undefined;
    while (true) {
        // Read as much of stdin there is
        const bytes = File.stdin().readStreaming(io, &.{&buf}) catch |err| {
            if (err == File.ReadStreamingError.EndOfStream) {
                break;
            } else {
                return err;
            }
        };
        // Passthrough to stdout
        _ = try File.stdout().writeStreamingAll(io, buf[0..bytes]);

        // Write to clip
        try clip.writeCopyBuffer(buf[0..bytes]);
    }

    try clip.writePasteboard();

    std.debug.print("\x1b[0;32mCopied To Pasteboard!\x1b[0m\n", .{});
}

test {
    _ = @import("Clip.zig");
}