add sql migrations for new lists stuff

resources/migrations/00015_add_lists_table.down.sql

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+DROP TABLE IF EXISTS lists;

resources/migrations/00015_add_lists_table.up.sql

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+CREATE TABLE lists (
+	id                SERIAL PRIMARY KEY,
+	name              TEXT    NOT NULL,
+	notes             TEXT,
+	is_public         BOOLEAN NOT NULL DEFAULT FALSE,
+	require_qualities BOOLEAN NOT NULL DEFAULT FALSE,
+	UNIQUE (name)
+);
+
+CREATE INDEX lists_name_idx ON lists (name);
+
+INSERT INTO lists (id, name, is_public, require_qualities) VALUES (0, 'Owned', TRUE, TRUE);

resources/migrations/00016_add_lists_to_collection_table.down.sql

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+ALTER TABLE collection DROP CONSTRAINT IF EXISTS collection_card_id_quality_foil_list_id_key;
+ALTER TABLE collection ADD CONSTRAINT collection_card_id_quality_foil_key UNIQUE (card_id, quality, foil);
+
+ALTER TABLE collection DROP COLUMN IF EXISTS list_id;
+
+DROP TRIGGER IF EXISTS collection_enforce_list_quality_rules_trigger ON collection;
+DROP FUNCTION IF EXISTS enforce_collection_row_list_quality_rules();
+
+ALTER TABLE collection DROP CONSTRAINT collection_quality_check;
+ALTER TABLE collection ADD CONSTRAINT collection_quality_check CHECK (quality IN ('online', 'near mint', 'lightly played', 'moderately played', 'heavily played', 'damaged'));
+ALTER TABLE collection ALTER COLUMN quality SET NOT NULL;
+
+CREATE OR REPLACE FUNCTION update_card_owned_count()
+	RETURNS TRIGGER
+AS $update_card_owned_count$
+DECLARE
+	update_card_id TEXT;
+BEGIN
+	IF (TG_OP = 'DELETE') THEN
+		update_card_id = OLD.card_id;
+	ELSE
+		update_card_id = NEW.card_id;
+	END IF;
+
+	UPDATE cards
+	SET
+		owned_count = (
+			SELECT COALESCE(SUM(quantity), 0)
+			FROM collection cl
+			WHERE cl.card_id = update_card_id
+		)
+	WHERE id = update_card_id;
+	RETURN NULL;
+END;
+$update_card_owned_count$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION update_card_owned_foil_count()
+	RETURNS TRIGGER
+AS $update_card_owned_foil_count$
+DECLARE
+	update_card_id TEXT;
+BEGIN
+	IF (TG_OP = 'DELETE') THEN
+		update_card_id = OLD.card_id;
+	ELSE
+		update_card_id = NEW.card_id;
+	END IF;
+
+	UPDATE cards
+	SET
+		owned_foil_count = (
+			SELECT COALESCE(SUM(quantity), 0)
+			FROM collection cl
+			WHERE cl.card_id = update_card_id AND cl.foil = TRUE
+		)
+	WHERE id = update_card_id;
+	RETURN NULL;
+END;
+$update_card_owned_foil_count$ LANGUAGE plpgsql;

resources/migrations/00016_add_lists_to_collection_table.up.sql

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+ALTER TABLE collection ADD COLUMN list_id INT;
+
+ALTER TABLE collection DROP CONSTRAINT IF EXISTS collection_card_id_quality_foil_key;
+ALTER TABLE collection ADD CONSTRAINT collection_card_id_quality_foil_list_id_key UNIQUE (card_id, quality, foil, list_id);
+
+-- all existing cards in the collections table at this point will have been added because
+-- they are owned, so put them in the default 'Owned' list
+UPDATE collection SET list_id = 0;
+
+ALTER TABLE collection ALTER COLUMN list_id SET NOT NULL;
+ALTER TABLE ONLY collection ADD CONSTRAINT collection_list_id_fkey FOREIGN KEY (list_id) REFERENCES lists (id) ON DELETE CASCADE;
+CREATE INDEX collection_list_id_idx ON collection (list_id);
+
+
+-- restriction that checks whether the corresponding list has 'require_qualities = TRUE' and then
+-- throws an error if the new/updated collection row has a null quality. also enforces the reverse,
+-- if 'require_qualities = FALSE' throws an error if a non-null quality is used
+
+CREATE OR REPLACE FUNCTION enforce_collection_row_list_quality_rules()
+	RETURNS TRIGGER
+AS $enforce_collection_row_list_quality_rules$
+DECLARE
+	require_qualities BOOLEAN;
+BEGIN
+	SELECT lists.require_qualities INTO STRICT require_qualities
+	FROM lists WHERE lists.id = NEW.list_id;
+
+	IF (NEW.quality IS NULL AND require_qualities = TRUE) THEN
+		RAISE EXCEPTION 'NULL quality invalid when list.require_qualities = TRUE';
+	ELSIF (NEW.quality IS NOT NULL AND require_qualities = FALSE) THEN
+		RAISE EXCEPTION 'non-NULL quality invalid when list.require_qualities = FALSE';
+	END IF;
+
+	RETURN NEW;
+END;
+$enforce_collection_row_list_quality_rules$ LANGUAGE plpgsql;
+
+CREATE TRIGGER collection_enforce_list_quality_rules_trigger
+BEFORE INSERT OR UPDATE ON collection
+FOR EACH ROW EXECUTE PROCEDURE enforce_collection_row_list_quality_rules();
+
+ALTER TABLE collection DROP CONSTRAINT collection_quality_check;
+ALTER TABLE collection ADD CONSTRAINT collection_quality_check CHECK (quality IN (NULL, 'online', 'near mint', 'lightly played', 'moderately played', 'heavily played', 'damaged'));
+ALTER TABLE collection ALTER COLUMN quality DROP NOT NULL;
+
+
+-- also need to update the trigger functions which set the cards table owned count fields
+-- to grab the card inventory count from the new 'Owned' list (list_id = 0)
+
+CREATE OR REPLACE FUNCTION update_card_owned_count()
+	RETURNS TRIGGER
+AS $update_card_owned_count$
+DECLARE
+	update_card_id TEXT;
+BEGIN
+	IF (TG_OP = 'DELETE') THEN
+		update_card_id = OLD.card_id;
+	ELSE
+		update_card_id = NEW.card_id;
+	END IF;
+
+	UPDATE cards
+	SET
+		owned_count = (
+			SELECT COALESCE(SUM(quantity), 0)
+			FROM collection cl
+			WHERE cl.card_id = update_card_id AND cl.list_id = 0
+		)
+	WHERE id = update_card_id;
+	RETURN NULL;
+END;
+$update_card_owned_count$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION update_card_owned_foil_count()
+	RETURNS TRIGGER
+AS $update_card_owned_foil_count$
+DECLARE
+	update_card_id TEXT;
+BEGIN
+	IF (TG_OP = 'DELETE') THEN
+		update_card_id = OLD.card_id;
+	ELSE
+		update_card_id = NEW.card_id;
+	END IF;
+
+	UPDATE cards
+	SET
+		owned_foil_count = (
+			SELECT COALESCE(SUM(quantity), 0)
+			FROM collection cl
+			WHERE cl.card_id = update_card_id AND cl.foil = TRUE AND cl.list_id = 0
+		)
+	WHERE id = update_card_id;
+	RETURN NULL;
+END;
+$update_card_owned_foil_count$ LANGUAGE plpgsql;