-- LegacyWorlds Beta 6
-- PostgreSQL database scripts
--
-- Functions and views to create and manipulate events
--
-- Copyright(C) 2004-2010, DeepClone Development
-- --------------------------------------------------------


-- --------------------------------------------------------------------------------------------------------------------------------------------------------------- --
-- --------------------------------------------------------------------------------------------------------------------------------------------------------------- --
-- EVENT CREATION FUNCTIONS                                                                                                                                        -- 
-- --------------------------------------------------------------------------------------------------------------------------------------------------------------- --
-- --------------------------------------------------------------------------------------------------------------------------------------------------------------- --

--
-- Creates a battle start event
--
-- Parameters:
--	b_id		Battle identifier
--

CREATE OR REPLACE FUNCTION events.battle_start_event( b_id BIGINT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	l_id		INT;
	l_name		TEXT;
	pe_id		INT;
	c_tick		BIGINT;
	evt_id		BIGINT;
BEGIN
	-- Get location name and identifier
	SELECT INTO l_id , l_name b.location_id , n.name
		FROM battles.battles b
			INNER JOIN naming.map_names n ON n.id = b.location_id
		WHERE b.id = b_id;

	-- Create message for all protagonists
	c_tick := sys.get_tick( ) - 1;
	FOR pe_id IN SELECT be.empire_id
					FROM battles.battles b
						INNER JOIN battles.protagonists bp ON bp.battle_id = b.id
						INNER JOIN battles.empires be ON be.id = bp.empire_id
					WHERE b.id = b_id
	LOOP
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( pe_id , c_tick , 'PLANET' , 0 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.planet_events ( event_id , location_id , location_name , battle_id)
			VALUES ( evt_id , l_id , l_name , b_id );
	END LOOP;
END;
$$ LANGUAGE plpgsql;



--
-- Creates a battle end event
--
-- Parameters:
--	b_id		Battle identifier
--

CREATE OR REPLACE FUNCTION events.battle_end_event( b_id BIGINT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	l_id		INT;
	l_name		TEXT;
	pe_id		INT;
	c_tick		BIGINT;
	evt_id		BIGINT;
BEGIN
	-- Get location name and identifier
	SELECT INTO l_id , l_name b.location_id , n.name
		FROM battles.battles b
			INNER JOIN naming.map_names n ON n.id = b.location_id
		WHERE b.id = b_id;

	-- Create message for all protagonists
	c_tick := sys.get_tick( ) - 1;
	FOR pe_id IN SELECT empire FROM battles.battles_list
					WHERE battle = b_id AND last_update = last_tick
	LOOP
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( pe_id , c_tick , 'PLANET' , 1 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.planet_events ( event_id , location_id , location_name , battle_id)
			VALUES ( evt_id , l_id , l_name , b_id );
	END LOOP;
END;
$$ LANGUAGE plpgsql;



--
-- Creates a strike start / end event
--
-- Parameters:
--	p_id		Planet identifier
--	sevt		Whether to create a strike start or a strike end event
--

CREATE OR REPLACE FUNCTION events.strike_event( p_id INT , sevt BOOLEAN )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	p_name		TEXT;
	po_id		INT;
	c_tick		BIGINT;
	evt_id		BIGINT;
BEGIN
	-- Get location name and owner identifier
	SELECT INTO p_name , po_id n.name , ep.empire_id
		FROM naming.map_names n
			INNER JOIN emp.planets ep ON ep.planet_id = n.id
		WHERE n.id = p_id;
	IF NOT FOUND
	THEN
		RETURN;
	END IF;

	-- Create message
	c_tick := sys.get_tick( ) - 1;
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( po_id , c_tick , 'PLANET' , ( CASE WHEN sevt THEN 2 ELSE 3 END ) , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.planet_events ( event_id , location_id , location_name )
		VALUES ( evt_id , p_id , p_name );
END;
$$ LANGUAGE plpgsql;



--
-- Creates events for a planet's ownership change
--
-- Parameters:
--	p_id		Planet identifier
--	no_id		New owner's identifier
--

CREATE OR REPLACE FUNCTION events.planet_ochange_events( p_id INT , no_id INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	p_name		VARCHAR(20);
	no_name		VARCHAR(20);
	oo_id		INT;
	oo_name		VARCHAR(20);
	evt_id		BIGINT;
	c_tick		BIGINT;
BEGIN
	c_tick := sys.get_tick( ) - 1;

	-- Get new owner's name and the planet's name
	SELECT INTO p_name name FROM naming.map_names WHERE id = p_id;
	SELECT INTO no_name name FROM naming.empire_names WHERE id = no_id;
	
	-- Get previous owner's name and identifier
	SELECT INTO oo_id , oo_name ep.empire_id , n.name
		FROM emp.planets ep
			INNER JOIN naming.empire_names n ON n.id = ep.empire_id
		WHERE ep.planet_id = p_id;

	-- If there is a previous owner, add planet loss event
	IF FOUND
	THEN
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( oo_id , c_tick , 'PLANET' , 4 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.planet_events ( event_id , location_id , location_name , empire_id , empire_name )
			VALUES ( evt_id , p_id , p_name , no_id , no_name );
	END IF;

	-- Add planet taking event
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( no_id , c_tick , 'PLANET' , 6 , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.planet_events ( event_id , location_id , location_name , empire_id , empire_name )
		VALUES ( evt_id , p_id , p_name , oo_id , oo_name );
END;
$$ LANGUAGE plpgsql;



--
-- Creates an event for planet abandon
--
-- Parameters:
--	p_id		Planet identifier
--

CREATE OR REPLACE FUNCTION events.planet_abandon_event( p_id INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	p_name		VARCHAR(20);
	po_id		INT;
	oo_name		VARCHAR(20);
	evt_id		BIGINT;
BEGIN
	-- Get owner's ID and planet's name
	SELECT INTO p_name , po_id n.name , ep.empire_id
		FROM naming.map_names n
			INNER JOIN emp.planets ep ON ep.planet_id = n.id
		WHERE n.id = p_id;

	-- Add abandon event
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( po_id , sys.get_tick( ) - 1 , 'PLANET' , 5 , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.planet_events ( event_id , location_id , location_name )
		VALUES ( evt_id , p_id , p_name  );
END;	
$$ LANGUAGE plpgsql;



--
-- Creates an event for a technology's availability
--
-- Parameters:
--	e_id		Empire identifier
--	t_id		Technology identifier
--

CREATE OR REPLACE FUNCTION events.tech_ready_event( e_id INT , t_id INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	evt_id		BIGINT;
BEGIN
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( e_id , sys.get_tick( ) - 1 , 'EMPIRE' , 0 , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.empire_events ( event_id , technology_id )
		VALUES ( evt_id , t_id  );
END;
$$ LANGUAGE plpgsql;



--
-- Creates an event for start/end of debt
--
-- Parameters:
--	e_id		Empire identifier
--	sevt		Whether this is the start or the end
--

CREATE OR REPLACE FUNCTION events.debt_event( e_id INT , sevt BOOLEAN )
	RETURNS VOID
	STRICT VOLATILE
	SECURITY INVOKER
AS $$
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( $1 , sys.get_tick( ) - 1 , 'EMPIRE' , ( CASE WHEN $2 THEN 1 ELSE 2 END ) , 'READY' );
$$ LANGUAGE SQL;



--
-- Creates a "pending request" event
--
-- Parameters:
--	a_id		Alliance identifier
--	e_id		Empire identifier
--

CREATE OR REPLACE FUNCTION events.alliance_request_event( a_id INT , e_id INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	a_tag	TEXT;
	al_id	INT;
	e_name	TEXT;
	evt_id	BIGINT;
BEGIN
	-- Get the alliance's name and leader ID
	SELECT INTO a_tag , al_id tag , leader_id FROM emp.alliances WHERE id = a_id;

	-- Get the joining player's name
	SELECT INTO e_name name FROM naming.empire_names WHERE id = e_id;

	-- Create the event
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( al_id , sys.get_tick( ) , 'ALLIANCE' , 0 , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.alliance_events ( event_id , alliance_id , alliance_tag , empire_id , empire_name )
		VALUES ( evt_id , a_id , a_tag , e_id , e_name );
END;
$$ LANGUAGE plpgsql;



--
-- Creates a request validation/rejection event
--
-- Parameters:
--	a_id		Alliance identifier
--	e_id		Empire identifier
--	acc			Whether the request was accepted or rejected
--

CREATE OR REPLACE FUNCTION events.alliance_response_event( a_id INT , e_id INT , acc BOOLEAN )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	a_tag	TEXT;
	e_name	TEXT;
	evt_id	BIGINT;
BEGIN
	-- Get the alliance's name and leader ID
	SELECT INTO a_tag tag FROM emp.alliances WHERE id = a_id;

	-- Get the requesting player's name
	SELECT INTO e_name name FROM naming.empire_names WHERE id = e_id;

	-- Create the event
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( e_id , sys.get_tick( ) , 'ALLIANCE' , 1 , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.alliance_events ( event_id , alliance_id , alliance_tag , req_result )
		VALUES ( evt_id , a_id , a_tag , acc );
END;
$$ LANGUAGE plpgsql;



--
-- Creates a leadership change event
--
-- Parameters:
--	a_id		Alliance identifier
--	ol_id		Previous leader's identifier
--

CREATE OR REPLACE FUNCTION events.alliance_lchange_event( a_id INT , ol_id INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	a_tag	TEXT;
	al_id	INT;
	al_name	TEXT;
	am_id	INT;
	evt_id	BIGINT;
BEGIN
	-- Get alliance tag, leader ID and leader name
	SELECT INTO a_tag , al_id , al_name a.tag , a.leader_id , n.name
		FROM emp.alliances a
			INNER JOIN naming.empire_names n ON n.id = a.leader_id
		WHERE a.id = a_id;

	-- Notify both members and pending members
	FOR am_id IN SELECT empire_id FROM emp.alliance_members
					WHERE alliance_id = a_id AND empire_id <> ol_id
	LOOP
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( am_id , sys.get_tick( ) , 'ALLIANCE' , 2 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.alliance_events ( event_id , alliance_id , alliance_tag , empire_id , empire_name )
			VALUES ( evt_id , a_id , a_tag , al_id , al_name );
	END LOOP;

END;
$$ LANGUAGE plpgsql;



--
-- Creates an alliance kick event
--
-- Parameters:
--	a_id		Alliance identifier
--	ol_id		Member being kicked
--

CREATE OR REPLACE FUNCTION events.alliance_kick_event( a_id INT , k_id INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	a_tag	TEXT;
	al_id	INT;
	k_name	TEXT;
	am_id	INT;
	evt_id	BIGINT;
BEGIN
	-- Get alliance tag and leader ID
	SELECT INTO a_tag , al_id a.tag , a.leader_id
		FROM emp.alliances a
			INNER JOIN naming.empire_names n ON n.id = a.leader_id
		WHERE a.id = a_id;
	SELECT INTO k_name name FROM naming.empire_names WHERE id = k_id; 

	-- Notify members
	FOR am_id IN SELECT empire_id FROM emp.alliance_members
					WHERE alliance_id = a_id AND empire_id <> al_id AND NOT is_pending
	LOOP
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( am_id , sys.get_tick( ) , 'ALLIANCE' , 3 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.alliance_events ( event_id , alliance_id , alliance_tag , empire_id , empire_name )
			VALUES ( evt_id , a_id , a_tag , k_id , k_name );
	END LOOP;
END;
$$ LANGUAGE plpgsql;



--
-- Creates an alliance quit event
--
-- Parameters:
--	a_id		Alliance identifier
--	q_id		Member quitting the alliance
--

CREATE OR REPLACE FUNCTION events.alliance_quit_event( a_id INT , q_id INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	a_tag	TEXT;
	q_name	TEXT;
	am_id	INT;
	evt_id	BIGINT;
BEGIN
	-- Get alliance tag and quitter name
	SELECT INTO a_tag a.tag FROM emp.alliances a WHERE a.id = a_id;
	SELECT INTO q_name name FROM naming.empire_names WHERE id = q_id; 

	-- Notify members
	FOR am_id IN SELECT empire_id FROM emp.alliance_members
					WHERE alliance_id = a_id AND NOT is_pending
	LOOP
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( am_id , sys.get_tick( ) , 'ALLIANCE' , 4 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.alliance_events ( event_id , alliance_id , alliance_tag , empire_id , empire_name )
			VALUES ( evt_id , a_id , a_tag , q_id , q_name );
	END LOOP;
END;
$$ LANGUAGE plpgsql;



--
-- Creates an alliance disband event
--
-- Parameters:
--	a_id		Alliance identifier
--	q_id		Member quitting the alliance
--

CREATE OR REPLACE FUNCTION events.alliance_disband_event( a_id INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	a_tag	TEXT;
	al_id	INT;
	am_id	INT;
	evt_id	BIGINT;
BEGIN
	-- Get alliance tag and quitter name
	SELECT INTO a_tag , al_id a.tag , leader_id FROM emp.alliances a WHERE a.id = a_id;

	-- Notify members
	FOR am_id IN SELECT empire_id FROM emp.alliance_members
					WHERE alliance_id = a_id AND empire_id <> al_id
	LOOP
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( am_id , sys.get_tick( ) , 'ALLIANCE' , 5 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.alliance_events ( event_id , alliance_id , alliance_tag )
			VALUES ( evt_id , a_id , a_tag );
	END LOOP;
END;
$$ LANGUAGE plpgsql;



--
-- Creates empty build queue events or updates existing ones
--
-- Parameters:
--	e_id		Empire identifier
--	p_id		Planet identifier
--	mqueue		Whether the empty queue is the military or civilian queue
--	c_tick		Current tick
--

CREATE OR REPLACE FUNCTION events.empty_queue_events( e_id INT , p_id INT , mqueue BOOLEAN , c_tick BIGINT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	evt_st	INT;
	evt_id	BIGINT;
	p_name	TEXT;
BEGIN
	evt_st := ( CASE WHEN mqueue THEN 1 ELSE 0 END );
	SELECT INTO evt_id event_id FROM events.events
		WHERE evt_type = 'QUEUE' AND evt_subtype = evt_st
			AND empire_id = e_id AND tick = c_tick;

	IF NOT FOUND
	THEN
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( e_id , c_tick , 'QUEUE' , evt_st , 'TICK' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.queue_events VALUES ( evt_id );
	END IF;
	
	SELECT INTO p_name name FROM naming.map_names WHERE id = p_id;
	INSERT INTO events.bqe_locations VALUES ( evt_id , p_id , p_name );
END;
$$ LANGUAGE plpgsql;



--
-- Commits fleet arrival events from the "fleet_arrivals" temporary table
--
-- Parameters:
--	c_tick		Current tick identifier
--

CREATE OR REPLACE FUNCTION events.commit_fleet_arrivals( c_tick BIGINT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	l_id		INT;
	l_name	TEXT;
	tg_id		INT;
	tg_mode		BOOLEAN;
	evt_id		BIGINT;
BEGIN
	FOR l_id , l_name , tg_id , tg_mode
		IN SELECT DISTINCT a.loc_id , a.loc_name , l.empire , l.attacking
				FROM fleet_arrivals a
					INNER JOIN fleets.locations_list_view l ON l.location = a.loc_id
	LOOP
		-- Create event record
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( tg_id , c_tick , 'FLEETS' , 0 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.fleets_events( event_id , location_id , location_name )
			VALUES ( evt_id , l_id , l_name );

		-- List fleets
		INSERT INTO events.fleet_lists ( event_id , owner_id , owner_name , fleet_name , fleet_power , status , source_id , source_name )
			SELECT evt_id , a.own_id , a.own_name , a.name , a.power , ( CASE
						WHEN tg_id = a.own_id
							THEN tg_mode
						ELSE
							( tg_mode <> a.mode )
					END ) , a.src_id , a.src_name
				FROM fleet_arrivals a
				WHERE loc_id = l_id
				ORDER BY ( a.own_id = tg_id ) DESC , a.mode , own_name , name NULLS LAST;
	END LOOP;
	DROP TABLE fleet_arrivals;
END;
$$ LANGUAGE plpgsql;



--
-- Commits fleet departure events from the "fleet_departures" temporary table
--

CREATE OR REPLACE FUNCTION events.commit_fleet_departures( )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	l_id		INT;
	l_name		TEXT;
	tg_id		INT;
	tg_mode		BOOLEAN;
	evt_id		BIGINT;
	c_tick		BIGINT;
BEGIN
	c_tick := sys.get_tick( );
	FOR l_id , l_name , tg_id , tg_mode
		IN SELECT DISTINCT a.loc_id , a.loc_name , l.empire , l.attacking
				FROM fleet_departures a
					INNER JOIN fleets.locations_list_view l
						ON l.location = a.loc_id AND l.empire <> a.own_id
	LOOP
		-- Create event record
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( tg_id , c_tick , 'FLEETS' , 1 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.fleets_events( event_id , location_id , location_name )
			VALUES ( evt_id , l_id , l_name );

		-- List fleets
		INSERT INTO events.fleet_lists ( event_id , owner_id , owner_name , fleet_name , fleet_power , status )
			SELECT evt_id , a.own_id , a.own_name , a.name , a.power , ( tg_mode <> a.mode )
				FROM fleet_departures a
				WHERE loc_id = l_id AND own_id <> tg_id
				ORDER BY a.mode , own_name , name NULLS LAST;
	END LOOP;
END;
$$ LANGUAGE plpgsql;



--
-- Commits fleet mode change events from the "fleet_switches" temporary table
--
-- Parameters:
--	els		Whether the switch was caused through the enemy list
--

CREATE OR REPLACE FUNCTION events.commit_fleet_switches( els BOOLEAN )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	l_id		INT;
	l_name		TEXT;
	tg_id		INT;
	tg_mode		BOOLEAN;
	evt_id		BIGINT;
	c_tick		BIGINT;
	own_c		BIGINT;
	other_c		BIGINT;
BEGIN
	c_tick := sys.get_tick( );
	FOR l_id , l_name , tg_id , tg_mode
		IN SELECT DISTINCT a.loc_id , a.loc_name , l.empire , l.attacking
				FROM fleet_switches a
					INNER JOIN fleets.locations_list_view l
						ON l.location = a.loc_id
	LOOP
		-- Handle other fleets
		SELECT INTO other_c count(*) FROM fleet_switches WHERE loc_id = l_id AND own_id <> tg_id;
		IF other_c > 0
		THEN
			-- Create event record
			INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
				VALUES ( tg_id , c_tick , 'FLEETS' , 2 , 'READY' )
				RETURNING event_id INTO evt_id;
			INSERT INTO events.fleets_events( event_id , location_id , location_name )
				VALUES ( evt_id , l_id , l_name );
	
			-- List fleets
			INSERT INTO events.fleet_lists ( event_id , owner_id , owner_name , fleet_name , fleet_power , status )
				SELECT evt_id , a.own_id , a.own_name , a.name , a.power , a.mode
					FROM fleet_switches a
					WHERE loc_id = l_id AND own_id <> tg_id
					ORDER BY a.mode , own_name , name NULLS LAST;
		END IF;

		-- Handle own fleets
		CONTINUE WHEN NOT els;
		SELECT INTO own_c count(*) FROM fleet_switches WHERE loc_id = l_id AND own_id = tg_id;
		CONTINUE WHEN own_c = 0;

		-- Create event record
		INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
			VALUES ( tg_id , c_tick , 'FLEETS' , 3 , 'READY' )
			RETURNING event_id INTO evt_id;
		INSERT INTO events.fleets_events( event_id , location_id , location_name )
			VALUES ( evt_id , l_id , l_name );

		-- List fleets
		INSERT INTO events.fleet_lists ( event_id , owner_id , owner_name , fleet_name , fleet_power , status )
			SELECT evt_id , a.own_id , a.own_name , a.name , a.power , a.mode
				FROM fleet_switches a
				WHERE loc_id = l_id AND own_id = tg_id
				ORDER BY a.mode , own_name , name NULLS LAST;
	END LOOP;
END;
$$ LANGUAGE plpgsql;



--
-- Creates a map name rejection event
--
-- Parameters:
--	u_id		Account identifier
--	n_id		Name identifier
--	o_name		Old name
--	n_name		New name
--	w_sent		Whether a warning was sent
--	w_count		Current warnings
--

CREATE OR REPLACE FUNCTION events.map_name_rejected_event( u_id INT , n_id INT , o_name TEXT , n_name TEXT , w_sent BOOLEAN , w_count INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	e_id	INT;
	evt_id	BIGINT;
BEGIN
	-- Get empire identifier
	SELECT INTO e_id e.name_id
		FROM emp.empires e
			INNER JOIN naming.empire_names en ON en.id = e.name_id
		WHERE en.owner_id = u_id;
	IF NOT FOUND
	THEN
		RETURN;
	END IF;

	-- Add event
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( e_id , sys.get_tick( ) - 1 , 'ADMIN' , 0 , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.admin_events( event_id , n_warnings , location_id , old_name , new_name )
		VALUES( evt_id , ( CASE WHEN w_sent THEN w_count ELSE NULL END ) , n_id , o_name , n_name );
END;
$$ LANGUAGE plpgsql;



--
-- Creates an empire name rejection event
--
-- Parameters:
--	n_id		Name identifier
--	o_name		Old name
--	n_name		New name
--	w_sent		Whether a warning was sent
--	w_count		Current warnings
--

CREATE OR REPLACE FUNCTION events.empire_name_rejected_event( n_id INT , o_name TEXT , n_name TEXT , w_sent BOOLEAN , w_count INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	evt_id	BIGINT;
BEGIN
	-- Add event
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( n_id , sys.get_tick( ) - 1 , 'ADMIN' , 1 , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.admin_events( event_id , n_warnings ,old_name , new_name )
		VALUES( evt_id , ( CASE WHEN w_sent THEN w_count ELSE NULL END ) , o_name , n_name );
END;
$$ LANGUAGE plpgsql;



--
-- Creates an alliance name rejection event
--
-- Parameters:
--	n_id		Empire identifier
--	o_name		Alliance name
--	w_sent		Whether a warning was sent
--	w_count		Current warnings
--

CREATE OR REPLACE FUNCTION events.alliance_name_rejected_event( n_id INT , o_name TEXT , w_sent BOOLEAN , w_count INT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	evt_id	BIGINT;
BEGIN
	-- Add event
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( n_id , sys.get_tick( ) - 1 , 'ADMIN' , 2 , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.admin_events( event_id , n_warnings , old_name )
		VALUES( evt_id , ( CASE WHEN w_sent THEN w_count ELSE NULL END ) , o_name );
END;
$$ LANGUAGE plpgsql;



--
-- Creates events for updated bug reports
--
-- Parameters:
--	e_id		Empire identifier
--	br_id		Bug report identifier
--	s_id		Submitter identifier
--

CREATE OR REPLACE FUNCTION events.bug_report_updated_event( e_id INT , br_id BIGINT , s_id BIGINT )
		RETURNS VOID
		STRICT VOLATILE
		SECURITY INVOKER
	AS $$
DECLARE
	evt_id	BIGINT;
BEGIN
	INSERT INTO events.events ( empire_id , tick , evt_type , evt_subtype , status )
		VALUES ( e_id , sys.get_tick( ) - 1 , 'BUGS' , 0 , 'READY' )
		RETURNING event_id INTO evt_id;
	INSERT INTO events.bug_events( event_id , bug_id , submitter_id )
		VALUES ( evt_id , br_id , s_id );
END;
$$ LANGUAGE plpgsql;




-- --------------------------------------------------------------------------------------------------------------------------------------------------------------- --
-- --------------------------------------------------------------------------------------------------------------------------------------------------------------- --
-- EVENTS VIEWS, USED BY THE MESSAGE SYSTEM                                                                                                                        -- 
-- --------------------------------------------------------------------------------------------------------------------------------------------------------------- --
-- --------------------------------------------------------------------------------------------------------------------------------------------------------------- --


--
-- Main events lists
--

CREATE VIEW events.queue_events_view
	AS SELECT e.event_id AS id , e.evt_type , e.evt_subtype , e.tick , e.real_time , ed.*
			FROM events.events e
				INNER JOIN events.queue_events ed USING (event_id);

GRANT SELECT ON events.queue_events_view TO :dbuser;


CREATE VIEW events.empire_events_view
	AS SELECT e.event_id AS id , e.evt_type , e.evt_subtype , e.tick , e.real_time , s.name AS technology
			FROM events.events e
				LEFT OUTER JOIN events.empire_events ed USING (event_id)
				LEFT OUTER JOIN tech.technologies tl ON tl.name_id = ed.technology_id
				LEFT OUTER JOIN defs.strings s ON s.id = tl.name_id
			WHERE e.evt_type = 'EMPIRE';

GRANT SELECT ON events.empire_events_view TO :dbuser;


CREATE VIEW events.fleets_events_view
	AS SELECT e.event_id AS id , e.evt_type , e.evt_subtype , e.tick , e.real_time ,
				ed.* , s.x , s.y , p.orbit
			FROM events.events e
				INNER JOIN events.fleets_events ed USING (event_id)
				INNER JOIN verse.planets p ON p.name_id = ed.location_id
				INNER JOIN verse.systems s ON s.id = p.system_id;

GRANT SELECT ON events.fleets_events_view TO :dbuser;


CREATE VIEW events.planet_events_view
	AS SELECT e.event_id AS id , e.evt_type , e.evt_subtype , e.tick , e.real_time ,
				ed.* , s.x , s.y , p.orbit
			FROM events.events e
				INNER JOIN events.planet_events ed USING (event_id)
				INNER JOIN verse.planets p ON p.name_id = ed.location_id
				INNER JOIN verse.systems s ON s.id = p.system_id;

GRANT SELECT ON events.planet_events_view TO :dbuser;


CREATE VIEW events.alliance_events_view
	AS SELECT e.event_id AS id , e.evt_type , e.evt_subtype , e.tick , e.real_time , ed.*
			FROM events.events e
				INNER JOIN events.alliance_events ed USING (event_id);

GRANT SELECT ON events.alliance_events_view TO :dbuser;


CREATE VIEW events.admin_events_view
	AS SELECT e.event_id AS id , e.evt_type , e.evt_subtype , e.tick , e.real_time , ed.*
			FROM events.events e
				INNER JOIN events.admin_events ed USING ( event_id );

GRANT SELECT ON events.admin_events_view TO :dbuser;


CREATE VIEW events.bugs_events_view
	AS SELECT e.event_id AS id , e.evt_type , e.evt_subtype , e.tick , e.real_time , ed.bug_id ,
				bs.is_admin AS submitter_admin , bs.name AS submitter_name
			FROM events.events e
				INNER JOIN events.bug_events ed USING ( event_id )
				INNER JOIN bugs.submitters bs USING ( submitter_id );

GRANT SELECT ON events.bugs_events_view TO :dbuser;


--
-- Queue event locations
--

CREATE VIEW events.queue_locations_view
	AS SELECT bqe.* , s.x , s.y , p.orbit
			FROM events.bqe_locations bqe
				INNER JOIN verse.planets p ON p.name_id = bqe.location_id
				INNER JOIN verse.systems s ON s.id = p.system_id;

GRANT SELECT ON events.queue_locations_view TO :dbuser;