From b29211c3878b9470c41616070e6e03b8f2bfecaf Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <me@steffo.eu>
Date: Tue, 22 Oct 2024 11:11:52 +0200
Subject: [PATCH] Sort of following now

---
 src/database/index.ts                  |  9 +++++++++
 src/database/init/09-create-follow.sql |  9 +++++++++
 src/database/query/delete-follow.sql   |  6 ++++++
 src/database/query/put-follow.sql      |  7 +++++++
 src/dv/index.ts                        | 28 +++++++++++++++++---------
 5 files changed, 50 insertions(+), 9 deletions(-)
 create mode 100644 src/database/init/09-create-follow.sql
 create mode 100644 src/database/query/delete-follow.sql
 create mode 100644 src/database/query/put-follow.sql

diff --git a/src/database/index.ts b/src/database/index.ts
index 4bce443..1d7af3f 100644
--- a/src/database/index.ts
+++ b/src/database/index.ts
@@ -108,6 +108,9 @@ export class Database {
 			]
 		)
 
+		l.info`09/XX Creating follow table...`
+		await this.#doQueryFile("src/database/init/09-create-follow.sql")
+
 		l.info("Done!")
 	}
 	
@@ -173,4 +176,10 @@ export class Database {
 
 		return result
 	}
+
+	async putFollow(follower: string, followed: string): Promise<void> {
+		l.info`Putting follow: from ${follower} to ${followed}`
+
+		await this.#doQueryFile<void>("src/database/query/put-follow.sql", [follower, followed])
+	}
 }
diff --git a/src/database/init/09-create-follow.sql b/src/database/init/09-create-follow.sql
new file mode 100644
index 0000000..4864644
--- /dev/null
+++ b/src/database/init/09-create-follow.sql
@@ -0,0 +1,9 @@
+CREATE TABLE follow (
+	follower		VARCHAR		REFERENCES (actor.handle)	NOT NULL,
+	followed		VARCHAR		REFERENCES (actor.handle)	NOT NULL,
+
+	PRIMARY KEY (
+		follower, 
+		followed
+	)
+);
diff --git a/src/database/query/delete-follow.sql b/src/database/query/delete-follow.sql
new file mode 100644
index 0000000..6637479
--- /dev/null
+++ b/src/database/query/delete-follow.sql
@@ -0,0 +1,6 @@
+DELETE FROM 
+	follow 
+WHERE
+	follow.follower = $1
+	AND
+	follow.followed = $2;
\ No newline at end of file
diff --git a/src/database/query/put-follow.sql b/src/database/query/put-follow.sql
new file mode 100644
index 0000000..c3f810a
--- /dev/null
+++ b/src/database/query/put-follow.sql
@@ -0,0 +1,7 @@
+INSERT INTO follow (
+	follower,
+	followed
+) VALUES (
+	$1,
+	$2
+) ON CONFLICT DO NOTHING;
diff --git a/src/dv/index.ts b/src/dv/index.ts
index 31170b3..082f040 100644
--- a/src/dv/index.ts
+++ b/src/dv/index.ts
@@ -1,5 +1,5 @@
 // deno-lint-ignore-file require-await
-import { createFederation, Person, Application, Image, PropertyValue, Organization, Federation, KvStore, Context, Actor, Follow, Endpoints, importSpki, importJwk, NodeInfo } from "@fedify/fedify"
+import { createFederation, Person, Application, Image, PropertyValue, Organization, Federation, KvStore, Context, Actor, Follow, Endpoints, importSpki, importJwk, NodeInfo, Accept } from "@fedify/fedify"
 import { getLogger } from "https://jsr.io/@logtape/logtape/0.6.3/logtape/logger.ts"
 import { escapeHtml } from "@@x/escape"
 import { StratzAPI } from "../stratz/api.ts"
@@ -307,27 +307,37 @@ export class DotinoVeloce {
 			return
 		}
 
-		l.debug`Attempting to determine object of the follow request...` // TODO: ???
+		l.debug`Attempting to determine what is being followed...`
 		const object = ctx.parseUri(follow.objectId)
 		l.debug`Object is: ${object}`
 
 		if(!object) {
-			l.warn`Failed to determine object, skipping.`
+			l.warn`Failed to determine what is being followed, skipping.`
 			return
 		}
 		if(object.type !== "actor") {
-			l.warn`Object type is not actor, skipping.` // TODO: Why?
+			l.warn`Attempting to follow something that is not actor, skipping.`
 			return
 		}
 
-		l.debug`Attempting to determine actor of the follow request...`
+		l.debug`Attempting to determine who sent the follow request...`
 		const actor = await follow.getActor(ctx)
 		l.debug`Actor is: ${actor}`
 
-		l.debug`Attempting to determine target of the follow request...`
-		const target = await follow.getTarget(ctx)
-		l.debug`Target is: ${target}`
+		if(!actor) {
+			l.warn`Failed to determine who sent the follow request, skipping.`
+			return
+		}
+		if(object.type !== "actor") {
+			l.warn`Being followed by someone who isn't an actor, skipping.`
+			return
+		}
 
-		
+		l.info`Accepting follow request from ${follow.actorId} to ${follow.objectId}...`
+		await ctx.sendActivity(object, "followers", new Accept({
+			object: follow,
+			actor: follow.objectId,
+			to: follow.actorId,
+		}))
 	}
 }