feat!: initial commit

Signed-off-by: João Augusto Costa Branco Marado Torres <torres.dev@disroot.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/src/lib/pgp/sign.ts b/src/lib/pgp/sign.ts
new file mode 100644
index 0000000..5f7f5a8
--- /dev/null
+++ b/src/lib/pgp/sign.ts
@@ -0,0 +1,82 @@
+import type {
+  KeyID,
+  Signature as InnerSignature,
+  SignaturePacket,
+} from "openpgp";
+import { defined, identity } from "../../utils/anonymous.ts";
+import { type MaybeIterable, surelyIterable } from "../../utils/iterator.ts";
+
+export class Signature {
+  private signature!: InnerSignature;
+  #packets!: Map<string, Packet[]>;
+
+  constructor(signature: InnerSignature) {
+    this.signature = signature;
+    this.#packets = new Map();
+    for (const packet of this.signature.packets) {
+      const key = packet.issuerKeyID.bytes;
+      const keyPackets = this.#packets.get(key);
+      if (keyPackets !== undefined) {
+        keyPackets.push(new Packet(packet));
+      } else {
+        this.#packets.set(key, [new Packet(packet)]);
+      }
+    }
+  }
+
+  getPackets(key?: MaybeIterable<KeyID>): Packet[] {
+    key ??= this.signingKeyIDs;
+    const iterator = Iterator.from(surelyIterable(key));
+    return iterator.map((key) => this.#packets.get(key.bytes)).filter(defined)
+      .flatMap(identity).toArray();
+  }
+
+  get signingKeyIDs(): ReturnType<
+    InstanceType<typeof InnerSignature>["getSigningKeyIDs"]
+  > {
+    return this.signature.getSigningKeyIDs();
+  }
+
+  get inner(): InnerSignature {
+    return this.signature;
+  }
+}
+
+export class Packet {
+  private packet!: SignaturePacket;
+
+  constructor(packet: SignaturePacket) {
+    this.packet = packet;
+  }
+
+  get signersUserID(): SignaturePacket["signersUserID"] {
+    return this.packet.signersUserID;
+  }
+
+  get issuerKeyID(): SignaturePacket["issuerKeyID"] {
+    return this.packet.issuerKeyID;
+  }
+
+  get issuerFingerprint(): SignaturePacket["issuerFingerprint"] {
+    return this.packet.issuerFingerprint;
+  }
+
+  get created(): SignaturePacket["created"] {
+    return this.packet.created;
+  }
+
+  get signatureType(): SignaturePacket["signatureType"] {
+    return this.packet.signatureType;
+  }
+
+  get trustLevel(): SignaturePacket["trustLevel"] {
+    return this.packet.trustLevel;
+  }
+  get trustAmount(): SignaturePacket["trustAmount"] {
+    return this.packet.trustAmount;
+  }
+
+  get inner(): SignaturePacket {
+    return this.packet;
+  }
+}