feat: add im relationship flows

server/db/mysql/schema.sql

@@ -84,7 +84,7 @@ CREATE TABLE kvmeta(
 	INDEX kvmeta_createdat_key(createdat, `key`)
 );
 
-INSERT INTO kvmeta(`key`, `value`) VALUES("version", "122");
+INSERT INTO kvmeta(`key`, `value`) VALUES("version", "123");
 
 CREATE TABLE users(
 	id 			BIGINT NOT NULL,
@@ -195,6 +195,57 @@ CREATE TABLE im_system_notifications(
 	CONSTRAINT fk_im_system_notifications_tenant FOREIGN KEY(tenant_id) REFERENCES im_tenant(id) ON DELETE CASCADE
 );
 
+CREATE TABLE im_friend_requests(
+	id               BIGINT NOT NULL AUTO_INCREMENT,
+	tenant_id        BIGINT NOT NULL,
+	request_id       VARCHAR(64) NOT NULL,
+	applicant_id     BIGINT NOT NULL,
+	target_id        BIGINT NOT NULL,
+	message          VARCHAR(200) NOT NULL DEFAULT '',
+	source           VARCHAR(32) NOT NULL DEFAULT '',
+	source_topic     VARCHAR(64) NOT NULL DEFAULT '',
+	status           VARCHAR(16) NOT NULL,
+	idempotency_key  VARCHAR(128) NOT NULL DEFAULT '',
+	expires_at       DATETIME(3) NOT NULL,
+	handled_at       DATETIME(3),
+	created_at       DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+	updated_at       DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
+
+	PRIMARY KEY(id),
+	UNIQUE INDEX uk_im_friend_requests_request(tenant_id, request_id),
+	UNIQUE INDEX uk_im_friend_requests_idempotency(tenant_id, applicant_id, idempotency_key),
+	INDEX idx_im_friend_requests_pair(tenant_id, applicant_id, target_id, status, created_at),
+	INDEX idx_im_friend_requests_inbox(tenant_id, target_id, status, created_at),
+	CONSTRAINT fk_im_friend_requests_tenant FOREIGN KEY(tenant_id) REFERENCES im_tenant(id) ON DELETE CASCADE
+);
+
+CREATE TABLE im_friendships(
+	tenant_id   BIGINT NOT NULL,
+	user_id     BIGINT NOT NULL,
+	peer_id     BIGINT NOT NULL,
+	status      VARCHAR(16) NOT NULL,
+	remark      VARCHAR(64) NOT NULL DEFAULT '',
+	topic       CHAR(25) NOT NULL DEFAULT '',
+	created_at  DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+	updated_at  DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
+
+	PRIMARY KEY(tenant_id, user_id, peer_id),
+	INDEX idx_im_friendships_peer(tenant_id, peer_id, status),
+	CONSTRAINT fk_im_friendships_tenant FOREIGN KEY(tenant_id) REFERENCES im_tenant(id) ON DELETE CASCADE
+);
+
+CREATE TABLE im_user_blocks(
+	tenant_id   BIGINT NOT NULL,
+	blocker_id  BIGINT NOT NULL,
+	blocked_id  BIGINT NOT NULL,
+	created_at  DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+	updated_at  DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
+
+	PRIMARY KEY(tenant_id, blocker_id, blocked_id),
+	INDEX idx_im_user_blocks_blocked(tenant_id, blocked_id),
+	CONSTRAINT fk_im_user_blocks_tenant FOREIGN KEY(tenant_id) REFERENCES im_tenant(id) ON DELETE CASCADE
+);
+
 # Indexed user tags.
 CREATE TABLE usertags(
 	id 		INT NOT NULL AUTO_INCREMENT,