feat: add port-sharing backend (#11939)

coderd/database/migrations/000191_workspace_agent_port_sharing.down.sql

@@ -0,0 +1,20 @@
+DROP TABLE workspace_agent_port_share;
+DROP VIEW template_with_users;
+ALTER TABLE templates DROP COLUMN max_port_sharing_level;
+
+-- Update the template_with_users view by recreating it.
+
+CREATE VIEW
+    template_with_users
+AS
+    SELECT
+        templates.*,
+		coalesce(visible_users.avatar_url, '') AS created_by_avatar_url,
+		coalesce(visible_users.username, '') AS created_by_username
+    FROM
+        templates
+    LEFT JOIN
+		visible_users
+	ON
+	    templates.created_by = visible_users.id;
+COMMENT ON VIEW template_with_users IS 'Joins in the username + avatar url of the created by user.';

coderd/database/migrations/000191_workspace_agent_port_sharing.up.sql

@@ -0,0 +1,27 @@
+CREATE TABLE workspace_agent_port_share (
+	workspace_id uuid NOT NULL REFERENCES workspaces (id) ON DELETE CASCADE,
+	agent_name text NOT NULL,
+	port integer NOT NULL,
+	share_level app_sharing_level NOT NULL
+);
+
+ALTER TABLE workspace_agent_port_share ADD PRIMARY KEY (workspace_id, agent_name, port);
+
+ALTER TABLE templates ADD COLUMN max_port_sharing_level app_sharing_level NOT NULL DEFAULT 'owner'::app_sharing_level;
+
+-- Update the template_with_users view by recreating it.
+DROP VIEW template_with_users;
+CREATE VIEW
+    template_with_users
+AS
+    SELECT
+        templates.*,
+		coalesce(visible_users.avatar_url, '') AS created_by_avatar_url,
+		coalesce(visible_users.username, '') AS created_by_username
+    FROM
+        templates
+    LEFT JOIN
+		visible_users
+	ON
+	    templates.created_by = visible_users.id;
+COMMENT ON VIEW template_with_users IS 'Joins in the username + avatar url of the created by user.';

coderd/database/migrations/testdata/fixtures/000191_ workspace_agent_port_share.up.sql

@@ -0,0 +1,4 @@
+INSERT INTO workspace_agent_port_share
+	(workspace_id, agent_name, port, share_level)
+VALUES
+	('b90547be-8870-4d68-8184-e8b2242b7c01', 'qua', 8080, 'public'::app_sharing_level) RETURNING *;