CREATE TABLE media(
	media_id INTEGER PRIMARY KEY,
	seaweedfs_fid TEXT (35) NOT NULL,
	filename TEXT (256) NOT NULL,
	content_type TEXT (256)
);

CREATE TABLE tags(
	tag_id INTEGER PRIMARY KEY,
	name TEXT (256) NOT NULL UNIQUE
);

CREATE TABLE media_tags(
	media_id INTEGER NOT NULL,
	tag_id INTEGER NOT NULL,
	FOREIGN KEY (media_id) REFERENCES media (media_id) ON DELETE CASCADE,
	FOREIGN KEY (tag_id) REFERENCES tags (tag_id) ON DELETE CASCADE,
	PRIMARY KEY(media_id, tag_id)
);

CREATE VIEW tag_count_view AS SELECT
	tags.tag_id AS tag_id,
	tags.name AS name,
	COUNT(media_tags.media_id) AS count
FROM tags
	INNER JOIN media_tags USING (tag_id)
	GROUP BY tag_id;

CREATE VIEW tagged_media_view AS SELECT
	media.media_id AS media_id,
	media.seaweedfs_fid AS media_seaweedfs_fid,
	media.filename AS media_filename,
	media.content_type AS media_content_type,
	tags.tag_id AS tag_id,
	tags.name AS tag_name
FROM media_tags
	INNER JOIN media USING (media_id)
	INNER JOIN tags USING (tag_id);