const std = @import("std");

// this generates RC scripts for windows, specifically for
// setting the icon of the output binary

pub fn main() !void {
    var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
    defer arena.deinit();
    const allocator = arena.allocator();

    // Get output filename from build system
    const args = try std.process.argsAlloc(allocator);
    if (args.len < 3) @panic("Missing output filename");
    const out_path = args[1];

    // Generate a startup module function that invokes
    // startup module for each zig function
    // and generates an api
    var writer = std.ArrayList(u8){};
    const iconPath = args[2];

    try writer.print(allocator, "#include <windows.h>\r\n", .{});
    try writer.print(allocator, "IDI_ICON1 ICON \"../../../content/", .{}); //{s}\"", .{iconPath});
    for (iconPath) |c| {
        if (c == '\\') {
            try writer.append(allocator, '/');
        } else {
            try writer.append(allocator, c);
        }
    }
    try writer.append(allocator, '"');

    // Write to specified output file
    // Open or create the file for writing (overwrites if it exists)
    const file = try std.fs.cwd().createFile(out_path, .{});
    defer file.close();

    // Write the content to the file
    try file.writeAll(writer.items);
}