Renumber migrations

coderd/database/migrations/000289_workspace_parameter_presets.up.sql

@@ -0,0 +1,52 @@
+-- TODO (sasswart): add IF NOT EXISTS and other clauses to make the migration more robust
+CREATE TABLE template_version_presets
+(
+	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+	template_version_id UUID NOT NULL,
+	name TEXT NOT NULL,
+	created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+	-- TODO (sasswart): Will auditing have any relevance to presets?
+	FOREIGN KEY (template_version_id) REFERENCES template_versions (id) ON DELETE CASCADE
+);
+
+CREATE TABLE template_version_preset_parameters
+(
+	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+	template_version_preset_id UUID NOT NULL,
+	name TEXT NOT NULL,
+	-- TODO (sasswart): would it be beneficial to allow presets to still offer a choice for values?
+	-- This would allow an operator to avoid having to create many similar templates where only one or
+	-- a few values are different.
+	value TEXT NOT NULL,
+	FOREIGN KEY (template_version_preset_id) REFERENCES template_version_presets (id) ON DELETE CASCADE
+);
+
+ALTER TABLE workspace_builds
+ADD COLUMN template_version_preset_id UUID NULL;
+
+ALTER TABLE workspace_builds
+ADD CONSTRAINT workspace_builds_template_version_preset_id_fkey
+FOREIGN KEY (template_version_preset_id)
+REFERENCES template_version_presets (id)
+-- TODO (sasswart): SET NULL might not be the best choice here. The rest of the hierarchy has ON DELETE CASCADE.
+-- We don't want CASCADE here, because we don't want to delete the workspace build if the preset is deleted.
+-- However, do we want to lose record of the preset id for a workspace build?
+ON DELETE SET NULL;
+
+-- Recreate the view to include the new column.
+DROP VIEW workspace_build_with_user;
+CREATE VIEW
+	workspace_build_with_user
+AS
+SELECT
+	workspace_builds.*,
+	coalesce(visible_users.avatar_url, '') AS initiator_by_avatar_url,
+	coalesce(visible_users.username, '') AS initiator_by_username
+FROM
+	workspace_builds
+	LEFT JOIN
+		visible_users
+	ON
+		workspace_builds.initiator_id = visible_users.id;
+
+COMMENT ON VIEW workspace_build_with_user IS 'Joins in the username + avatar url of the initiated by user.';