BEGIN TRANSACTION;
CREATE TABLE source_files (
	id		INTEGER PRIMARY KEY,
	filename	TEXT	UNIQUE NOT NULL,
	size		INTEGER NOT NULL,
	hash		TEXT,
	mime_type	INTEGER,
	last_change	FLOAT	NOT NULL DEFAULT (strftime('%s','now')),
	last_seen	INTEGER	NOT NULL DEFAULT (strftime('%s','now')),
	FOREIGN KEY	(mime_type)	REFERENCES mime_types(id)
		ON DELETE SET NULL
);
CREATE TABLE destinations (
	id		INTEGER PRIMARY KEY,
	name		TEXT	UNIQUE NOT NULL
);
CREATE TABLE destination_files (
	id		INTEGER PRIMARY KEY,
	filename	TEXT,
	last_change	FLOAT	NOT NULL DEFAULT 0,
	source_file_id	INTEGER,
	destination_id	INTEGER,
	FOREIGN KEY	(source_file_id)	REFERENCES source_files(id)
		ON DELETE SET NULL,
	FOREIGN KEY	(destination_id)	REFERENCES destinations(id)
		ON DELETE CASCADE
);
CREATE TABLE mime_types (
	id		INTEGER PRIMARY KEY,
	mime_text	TEXT	UNIQUE NOT NULL
);
CREATE TABLE mime_actions (
	id		INTEGER PRIMARY KEY,
	mime_type	INTEGER,
	destination_id	INTEGER,
	action		INTEGER	DEFAULT 1,
	FOREIGN KEY	(mime_type)		REFERENCES mime_types(id),
	FOREIGN KEY	(destination_id)	REFERENCES destinations(id)
		ON DELETE CASCADE
);
CREATE TABLE tags (
	source_file	INTEGER PRIMARY KEY,
	genre		TEXT,
	albumartist	TEXT,
	year		TEXT,
	album		TEXT,
	disc		TEXT,
	artist		TEXT,
	track		TEXT,
	title		TEXT,
	composer	TEXT,
	performer	TEXT,
	rate		INTEGER,
	channels	INTEGER,
	bitrate		INTEGER,
	last_change	FLOAT,
	tagreader	TEXT,
	FOREIGN KEY (source_file)	REFERENCES source_files(id)
		ON DELETE CASCADE
);

CREATE VIEW mime_type_actions AS
	SELECT
		mime_types.id,mime_types.mime_text,
		mime_actions.destination_id,mime_actions.action
	FROM mime_types INNER JOIN mime_actions
		ON mime_actions.mime_type = mime_types.id;
CREATE TRIGGER update_mime_actions INSTEAD OF UPDATE OF action ON mime_type_actions
BEGIN
	UPDATE	mime_actions
	SET	action=new.action
	WHERE	mime_type=old.id
	AND	destination_id=old.destination_id;
END;

CREATE TRIGGER create_dest_files_and_mime_actions AFTER INSERT ON destinations
BEGIN
	INSERT INTO mime_actions
		(mime_type,destination_id)
	SELECT id,new.id
	FROM mime_types;
	INSERT INTO destination_files
		(source_file_id,destination_id)
	SELECT id,new.id
	FROM source_files;
END;

CREATE TRIGGER create_mime_actions AFTER INSERT ON mime_types
BEGIN
	INSERT INTO mime_actions (mime_type,destination_id)
	SELECT mime_types.id,destinations.id
	FROM mime_types INNER JOIN destinations
	WHERE mime_types.id=new.id;
END;

CREATE INDEX sourcefiles_by_name ON source_files (filename,id);

CREATE TRIGGER create_destinations AFTER INSERT ON source_files
BEGIN
	INSERT INTO destination_files (source_file_id,destination_id)
		SELECT source_files.id,destinations.id FROM source_files
	INNER JOIN destinations
		WHERE source_files.id=new.id;
END;
CREATE TRIGGER create_tags AFTER INSERT ON source_files
BEGIN
	INSERT INTO tags (source_file,last_change) VALUES (new.id,0);
END;

COMMIT;