//! parse and validate atproto identifiers: at:// URIs, DIDs, handles.
//!
//! run: zig build example-parse-identifiers

const std = @import("std");
const zat = @import("zat");

pub fn main() void {
    // an at:// URI addresses a record: authority / collection / rkey.
    // this one points at a post by jcsalterego.bsky.social.
    const at_uri = "at://did:plc:vc7f4oafdgxsihk4cry2xpze/app.bsky.feed.post/3mpk2wua4jc2x";
    const uri = zat.AtUri.parse(at_uri).?;
    std.debug.print("{s:<14}{s}\n", .{ "authority:", uri.authority() });
    std.debug.print("{s:<14}{s}\n", .{ "collection:", uri.collection().? });
    std.debug.print("{s:<14}{s}\n", .{ "rkey:", uri.rkey().? });

    const did = zat.Did.parse("did:plc:vc7f4oafdgxsihk4cry2xpze").?;
    std.debug.print("{s:<14}{t}\n", .{ "did method:", did.method() });

    // Handle.parse returns null for invalid input
    std.debug.print("{s:<14}{s}\n", .{ "bsky.app:", validity("bsky.app") });
    std.debug.print("{s:<14}{s}\n", .{ "not a handle:", validity("not a handle") });
}

fn validity(handle: []const u8) []const u8 {
    return if (zat.Handle.parse(handle) != null) "valid" else "invalid";
}