DROP VIEW IF EXISTS "v_pres_annotation_curr";
DROP VIEW IF EXISTS "v_pres_annotation_history_curr";
DROP VIEW IF EXISTS "v_pres_page_cursor";
DROP VIEW IF EXISTS "v_pres_page_writers";
DROP TABLE IF EXISTS "pres_annotation_history";
DROP TABLE IF EXISTS "pres_annotation";
DROP TABLE IF EXISTS "pres_page_cursor";
DROP TABLE IF EXISTS "pres_page_writers";
DROP TABLE IF EXISTS "pres_page";
DROP TABLE IF EXISTS "pres_presentation";

DROP VIEW IF EXISTS "v_chat";
DROP VIEW IF EXISTS "v_chat_message_public";
DROP VIEW IF EXISTS "v_chat_message_private";
DROP VIEW IF EXISTS "v_chat_participant";
DROP VIEW IF EXISTS "v_user_typing_public";
DROP TABLE IF EXISTS "chat_user";
DROP TABLE IF EXISTS "chat_message";
DROP TABLE IF EXISTS "chat";

DROP VIEW IF EXISTS "v_user_camera";
DROP VIEW IF EXISTS "v_user_voice";
--DROP VIEW IF EXISTS "v_user_whiteboard";
DROP VIEW IF EXISTS "v_user_breakoutRoom";
DROP VIEW IF EXISTS "v_user";
DROP VIEW IF EXISTS "v_user_current";
DROP VIEW IF EXISTS "v_user_ref";
DROP TABLE IF EXISTS "user_camera";
DROP TABLE IF EXISTS "user_voice";
--DROP TABLE IF EXISTS "user_whiteboard";
DROP TABLE IF EXISTS "user_breakoutRoom";
DROP TABLE IF EXISTS "user_connectionStatus";
DROP TABLE IF EXISTS "user";

DROP VIEW IF EXISTS "v_meeting_lockSettings";
DROP VIEW IF EXISTS "v_meeting_showUserlist";
DROP VIEW IF EXISTS "v_meeting_usersPolicies";
DROP TABLE IF EXISTS "meeting_breakout";
DROP TABLE IF EXISTS "meeting_recording";
DROP TABLE IF EXISTS "meeting_welcome";
DROP TABLE IF EXISTS "meeting_voice";
DROP TABLE IF EXISTS "meeting_users";
DROP TABLE IF EXISTS "meeting_metadata";
DROP TABLE IF EXISTS "meeting_lockSettings";
DROP TABLE IF EXISTS "meeting_usersPolicies";
DROP TABLE IF EXISTS "meeting_group";
DROP TABLE IF EXISTS "meeting";

DROP FUNCTION IF EXISTS "update_user_presenter_trigger_func";
DROP FUNCTION IF EXISTS "update_pres_presentation_current_trigger_func";
DROP FUNCTION IF EXISTS "update_pres_page_current_trigger_func";
DROP FUNCTION IF EXISTS "pres_page_writers_update_delete_trigger_func";
DROP FUNCTION IF EXISTS "update_user_hasDrawPermissionOnCurrentPage(varchar, varchar)";

-- ========== Meeting tables


create table "meeting" (
	"meetingId"	varchar(100) primary key,
	"extId" 	varchar(100),
	"name" varchar(100),
	"isBreakout" boolean,
	"disabledFeatures" varchar[],
	"meetingCameraCap" integer,
	"maxPinnedCameras" integer,
	"notifyRecordingIsOn" boolean,
	"presentationUploadExternalDescription" text,
	"presentationUploadExternalUrl" varchar(500),
	"learningDashboardAccessToken" varchar(100),
	"html5InstanceId" varchar(100),
	"createdTime" bigint,
	"duration" integer
);

create table "meeting_breakout" (
	"meetingId" 		varchar(100) primary key references "meeting"("meetingId") ON DELETE CASCADE,
    "parentId"           varchar(100),
    "sequence"           integer,
    "freeJoin"           boolean,
    "breakoutRooms"      varchar[],
    "record"             boolean,
    "privateChatEnabled" boolean,
    "captureNotes"       boolean,
    "captureSlides"      boolean,
    "captureNotesFilename" varchar(100),
    "captureSlidesFilename" varchar(100)
);
create index "idx_meeting_breakout_meetingId" on "meeting_breakout"("meetingId");

create table "meeting_recording" (
	"meetingId" 		varchar(100) primary key references "meeting"("meetingId") ON DELETE CASCADE,
	"record" boolean,
	"autoStartRecording" boolean,
	"allowStartStopRecording" boolean,
	"keepEvents" boolean
);
create index "idx_meeting_recording_meetingId" on "meeting_recording"("meetingId");

create table "meeting_welcome" (
	"meetingId" 		varchar(100) primary key references "meeting"("meetingId") ON DELETE CASCADE,
	"welcomeMsgTemplate" text,
	"welcomeMsg" text,
	"modOnlyMessage" text
);
create index "idx_meeting_welcome_meetingId" on "meeting_welcome"("meetingId");

create table "meeting_voice" (
	"meetingId" 		varchar(100) primary key references "meeting"("meetingId") ON DELETE CASCADE,
	"telVoice" varchar(100),
	"voiceConf" varchar(100),
	"dialNumber" varchar(100),
	"muteOnStart" boolean
);
create index "idx_meeting_voice_meetingId" on "meeting_voice"("meetingId");

create table "meeting_usersPolicies" (
	"meetingId" 		varchar(100) primary key references "meeting"("meetingId") ON DELETE CASCADE,
    "maxUsers"                 integer,
    "maxUserConcurrentAccesses" integer,
    "webcamsOnlyForModerator"  boolean,
    "userCameraCap"            integer,
    "guestPolicy"              varchar(100),
    "meetingLayout"            varchar(100),
    "allowModsToUnmuteUsers"   boolean,
    "allowModsToEjectCameras"  boolean,
    "authenticatedGuest"       boolean
);
create index "idx_meeting_usersPolicies_meetingId" on "meeting_usersPolicies"("meetingId");

CREATE OR REPLACE VIEW "v_meeting_usersPolicies" AS SELECT * FROM "meeting_usersPolicies";

create table "meeting_metadata"(
	"meetingId" varchar(100) references "meeting"("meetingId") ON DELETE CASCADE,
	"name" varchar(255),
	"value" varchar(255),
	CONSTRAINT "meeting_metadata_pkey" PRIMARY KEY ("meetingId","name")
);
create index "idx_meeting_metadata_meetingId" on "meeting_metadata"("meetingId");

create table "meeting_lockSettings" (
	"meetingId" 		varchar(100) primary key references "meeting"("meetingId") ON DELETE CASCADE,
    "disableCam"             boolean,
    "disableMic"             boolean,
    "disablePrivateChat"     boolean,
    "disablePublicChat"      boolean,
    "disableNotes"           boolean,
    "hideUserList"           boolean,
    "lockOnJoin"             boolean,
    "lockOnJoinConfigurable" boolean,
    "hideViewersCursor"      boolean
);
create index "idx_meeting_lockSettings_meetingId" on "meeting_lockSettings"("meetingId");

CREATE OR REPLACE VIEW "v_meeting_lockSettings" AS
SELECT
	mls."meetingId",
	mls."disableCam",
	mls."disableMic",
	mls."disablePrivateChat",
	mls."disablePublicChat",
	mls."disableNotes",
	mls."hideUserList",
	mls."hideViewersCursor",
	mup."webcamsOnlyForModerator",
	CASE WHEN
	mls."disableCam" IS TRUE THEN TRUE
	WHEN mls."disableMic"  IS TRUE THEN TRUE
	WHEN mls."disablePrivateChat"  IS TRUE THEN TRUE
	WHEN mls."disablePublicChat"  IS TRUE THEN TRUE
	WHEN mls."disableNotes"  IS TRUE THEN TRUE
	WHEN mls."hideUserList"  IS TRUE THEN TRUE
	WHEN mls."hideViewersCursor"  IS TRUE THEN TRUE
	WHEN mup."webcamsOnlyForModerator"  IS TRUE THEN TRUE
	ELSE FALSE
	END "hasActiveLockSetting"
FROM meeting m
JOIN "meeting_lockSettings" mls ON mls."meetingId" = m."meetingId"
JOIN "meeting_usersPolicies" mup ON mup."meetingId" = m."meetingId";

CREATE OR REPLACE VIEW "v_meeting_showUserlist" AS
SELECT "meetingId"
FROM "meeting_lockSettings"
WHERE "hideUserList" IS FALSE;

CREATE INDEX "idx_meeting_lockSettings_hideUserList_false" ON "meeting_lockSettings"("meetingId") WHERE "hideUserList" IS FALSE;


create table "meeting_group" (
	"meetingId"  varchar(100) references "meeting"("meetingId") ON DELETE CASCADE,
    "groupId"    varchar(100),
    "name"       varchar(100),
    "usersExtId" varchar[],
    CONSTRAINT "meeting_group_pkey" PRIMARY KEY ("meetingId","groupId")
);
create index "idx_meeting_group_meetingId" on "meeting_group"("meetingId");


-- ========== User tables


CREATE TABLE "user" (
	"userId" varchar(50) NOT NULL PRIMARY KEY,
	"extId" varchar(50) NULL,
	"meetingId" varchar(100) NULL references "meeting"("meetingId") ON DELETE CASCADE,
	"name" varchar(255) NULL,
	"avatar" varchar(500) NULL,
	"color" varchar(7) NULL,
	"emoji" varchar,
	"emojiTime" timestamp,
	"guest" bool NULL,
	"guestStatus" varchar(50),
	"mobile" bool NULL,
	"clientType" varchar(50),
--	"excludeFromDashboard" bool NULL,
	"role" varchar(20) NULL,
	"authed" bool NULL,
	"joined" bool NULL,
	"leftFlag" bool NULL,
--	"ejected" bool null,
--	"ejectReason" varchar(255),
	"banned" bool NULL,
	"loggedOut" bool NULL,
	"registeredOn" bigint NULL,
	"presenter" bool NULL,
	"pinned" bool NULL,
	"locked" bool NULL,
	"hasDrawPermissionOnCurrentPage" bool default FALSE
);
CREATE INDEX "idx_user_meetingId" ON "user"("meetingId");

--hasDrawPermissionOnCurrentPage is necessary to improve the performance of the order by of userlist
COMMENT ON COLUMN "user"."hasDrawPermissionOnCurrentPage" IS 'This column is dynamically populated by triggers of tables: user, pres_presentation, pres_page, pres_page_writers';

--Virtual columns isDialIn, isModerator and isOnline
ALTER TABLE "user" ADD COLUMN "isDialIn" boolean GENERATED ALWAYS AS (CASE WHEN "clientType" = 'dial-in-user' THEN true ELSE false END) STORED;
--ALTER TABLE "user" ADD COLUMN "isModerator" boolean GENERATED ALWAYS AS (CASE WHEN "role" = 'MODERATOR' THEN true ELSE false END) STORED;
--ALTER TABLE "user" ADD COLUMN "isOnline" boolean GENERATED ALWAYS AS (CASE WHEN "joined" IS true AND "loggedOut" IS false THEN true ELSE false END) STORED;

CREATE OR REPLACE VIEW "v_user"
AS SELECT "user"."userId",
    "user"."extId",
    "user"."meetingId",
    "user"."name",
    "user"."avatar",
    "user"."color",
    "user"."emoji",
    "user"."emojiTime",
    "user"."guest",
    "user"."guestStatus",
    "user"."mobile",
    "user"."clientType",
    "user"."isDialIn",
    "user"."role",
    "user"."authed",
    "user"."joined",
    "user"."leftFlag",
    "user"."banned",
    "user"."loggedOut",
    "user"."registeredOn",
    "user"."presenter",
    "user"."pinned",
    "user"."locked",
    "user"."hasDrawPermissionOnCurrentPage",
    CASE WHEN "user"."role" = 'MODERATOR' THEN true ELSE false END "isModerator",
    CASE WHEN "user"."joined" IS true AND "user"."loggedOut" IS false THEN true ELSE false END "isOnline"
   FROM "user"
  WHERE "user"."loggedOut" IS FALSE
  AND "user".joined IS TRUE;
CREATE INDEX "idx_v_user_meetingId" ON "user"("meetingId") where "user"."loggedOut" IS FALSE and "user"."joined" IS TRUE;
CREATE INDEX "idx_v_user_meetingId_orderByColumns" ON "user"("meetingId","role","emojiTime","isDialIn","hasDrawPermissionOnCurrentPage","name","userId") where "user"."loggedOut" IS FALSE and "user"."joined" IS TRUE;


CREATE OR REPLACE VIEW "v_user_current"
AS SELECT "user"."userId",
    "user"."extId",
    "user"."meetingId",
    "user"."name",
    "user"."avatar",
    "user"."color",
    "user"."emoji",
    "user"."guest",
    "user"."guestStatus",
    "user"."mobile",
    "user"."clientType",
    "user"."isDialIn",
    "user"."role",
    "user"."authed",
    "user"."joined",
    "user"."leftFlag",
    "user"."banned",
    "user"."loggedOut",
    "user"."registeredOn",
    "user"."presenter",
    "user"."pinned",
    "user"."locked",
    "user"."hasDrawPermissionOnCurrentPage",
    CASE WHEN "user"."role" = 'MODERATOR' THEN true ELSE false END "isModerator"
   FROM "user";

--v_user_ref will be used only as foreign key (not possible to fetch this table directly through graphql)
--it is necessary because v_user has some conditions like "lockSettings-hideUserList"
--but viewers still needs to query this users as foreign key of chat, cameras, etc
CREATE OR REPLACE VIEW "v_user_ref"
AS SELECT "user"."userId",
    "user"."extId",
    "user"."meetingId",
    "user"."name",
    "user"."avatar",
    "user"."color",
    "user"."emoji",
    "user"."guest",
    "user"."guestStatus",
    "user"."mobile",
    "user"."clientType",
    "user"."isDialIn",
    "user"."role",
    "user"."authed",
    "user"."joined",
    "user"."leftFlag",
    "user"."banned",
    "user"."loggedOut",
    "user"."registeredOn",
    "user"."presenter",
    "user"."pinned",
    "user"."locked",
    "user"."hasDrawPermissionOnCurrentPage",
    CASE WHEN "user"."role" = 'MODERATOR' THEN true ELSE false END "isModerator",
    CASE WHEN "user"."joined" IS true AND "user"."loggedOut" IS false THEN true ELSE false END "isOnline"
   FROM "user";

CREATE TABLE "user_voice" (
	"userId" varchar(50) PRIMARY KEY NOT NULL REFERENCES "user"("userId") ON DELETE	CASCADE,
	"voiceUserId" varchar(100),
	"callerName" varchar(100),
	"callerNum" varchar(100),
	"callingWith" varchar(100),
	"joined" boolean NULL,
	"listenOnly" boolean NULL,
	"muted" boolean NULL,
	"spoke" boolean NULL,
	"talking" boolean NULL,
	"floor" boolean NULL,
	"lastFloorTime" varchar(25),
	"voiceConf" varchar(100),
	"color" varchar(7),
	"endTime" bigint NULL,
	"startTime" bigint NULL
);
--CREATE INDEX "idx_user_voice_userId" ON "user_voice"("userId");

CREATE OR REPLACE VIEW "v_user_voice" AS
SELECT
	u."meetingId",
	"user_voice" .*,
	greatest(coalesce(user_voice."startTime", 0), coalesce(user_voice."endTime", 0)) AS "lastSpeakChangedAt"
FROM "user_voice"
JOIN "user" u ON u."userId" = "user_voice"."userId";

CREATE TABLE "user_camera" (
	"streamId" varchar(100) PRIMARY KEY,
	"userId" varchar(50) NOT NULL REFERENCES "user"("userId") ON DELETE CASCADE
);
CREATE INDEX "idx_user_camera_userId" ON "user_camera"("userId");

CREATE OR REPLACE VIEW "v_user_camera" AS
SELECT
	u."meetingId",
	"user_camera" .*
FROM "user_camera"
JOIN "user" u ON u."userId" = user_camera."userId";

CREATE TABLE "user_breakoutRoom" (
	"userId" varchar(50) PRIMARY KEY REFERENCES "user"("userId") ON DELETE CASCADE,
	"breakoutRoomId" varchar(100),
	"isDefaultName" boolean,
	"sequence" int,
	"shortName" varchar(100),
	"currentlyInRoom" boolean
);
--CREATE INDEX "idx_user_breakoutRoom_userId" ON "user_breakoutRoom"("userId");

CREATE OR REPLACE VIEW "v_user_breakoutRoom" AS
SELECT
	u."meetingId",
	"user_breakoutRoom" .*
FROM "user_breakoutRoom"
JOIN "user" u ON u."userId" = "user_breakoutRoom"."userId";

CREATE TABLE "user_connectionStatus" (
	"userId" varchar(50) PRIMARY KEY REFERENCES "user"("userId") ON DELETE CASCADE,
	"meetingId" varchar(100) REFERENCES "meeting"("meetingId") ON DELETE CASCADE,
	"status" varchar(15),
	"statusUpdatedAt" timestamp,
	"connectionAliveAt" timestamp
);
create index "idx_user_connectionStatus_meetingId" on "user_connectionStatus"("meetingId");

--CREATE OR REPLACE VIEW "v_user_connectionStatus" AS
--SELECT u."meetingId", u."userId", uc.status, uc."statusUpdatedAt", uc."connectionAliveAt",
--CASE WHEN "statusUpdatedAt" < current_timestamp - INTERVAL '20 seconds' THEN TRUE ELSE FALSE END AS "clientNotResponding"
--FROM "user" u
--LEFT JOIN "user_connectionStatus" uc ON uc."userId" = u."userId";

-- ===================== CHAT TABLES


CREATE TABLE "chat" (
	"chatId"  varchar(100),
	"meetingId" varchar(100) REFERENCES "meeting"("meetingId") ON DELETE CASCADE,
	"access" varchar(20),
	"createdBy" varchar(25),
	CONSTRAINT "chat_pkey" PRIMARY KEY ("chatId","meetingId")
);
CREATE INDEX "idx_chat_meetingId" ON "chat"("meetingId");

CREATE TABLE "chat_user" (
	"chatId" varchar(100),
	"meetingId" varchar(100),
	"userId" varchar(50),
	"lastSeenAt" bigint,
	"typingAt"   timestamp,
	CONSTRAINT "chat_user_pkey" PRIMARY KEY ("chatId","meetingId","userId"),
    CONSTRAINT chat_fk FOREIGN KEY ("chatId", "meetingId") REFERENCES "chat"("chatId", "meetingId") ON DELETE CASCADE
);
CREATE INDEX "idx_chat_user_chatId" ON "chat_user"("chatId","meetingId");

CREATE OR REPLACE VIEW "v_user_typing_public" AS
SELECT "meetingId", "chatId", "userId", "typingAt",
CASE WHEN "typingAt" > current_timestamp - INTERVAL '5 seconds' THEN true ELSE false END AS "isCurrentlyTyping"
FROM chat_user
WHERE "chatId" = 'MAIN-PUBLIC-GROUP-CHAT';


CREATE TABLE "chat_message" (
	"messageId" varchar(100) PRIMARY KEY,
	"chatId" varchar(100),
	"meetingId" varchar(100),
	"correlationId" varchar(100),
	"createdTime" bigint,
	"chatEmphasizedText" boolean,
	"message" TEXT,
    "senderId" varchar(100),
    "senderName" varchar(255),
	"senderRole" varchar(20),
    CONSTRAINT chat_fk FOREIGN KEY ("chatId", "meetingId") REFERENCES "chat"("chatId", "meetingId") ON DELETE CASCADE
);
CREATE INDEX "idx_chat_message_chatId" ON "chat_message"("chatId","meetingId");

CREATE OR REPLACE VIEW "v_chat" AS
SELECT 	"user"."userId",
		chat."meetingId",
		chat."chatId",
		chat_with."userId" AS "participantId",
		count(DISTINCT cm."messageId") "totalMessages",
		sum(CASE WHEN cm."senderId" != "user"."userId" and cm."createdTime" > coalesce(cu."lastSeenAt",0) THEN 1 ELSE 0 end) "totalUnread",
		CASE WHEN chat."access" = 'PUBLIC_ACCESS' THEN true ELSE false end public
FROM "user"
LEFT JOIN "chat_user" cu ON cu."meetingId" = "user"."meetingId" AND cu."userId" = "user"."userId"
--now it will always add chat_user for public chat onUserJoin
--JOIN "chat" ON "user"."meetingId" = chat."meetingId" AND (cu."chatId" = chat."chatId" OR chat."chatId" = 'MAIN-PUBLIC-GROUP-CHAT')
JOIN "chat" ON "user"."meetingId" = chat."meetingId" AND cu."chatId" = chat."chatId"
LEFT JOIN "chat_user" chat_with ON chat_with."meetingId" = chat."meetingId" AND chat_with."chatId" = chat."chatId" AND chat."chatId" != 'MAIN-PUBLIC-GROUP-CHAT' AND chat_with."userId" != cu."userId"
LEFT JOIN chat_message cm ON cm."meetingId" = chat."meetingId" AND cm."chatId" = chat."chatId"
GROUP BY "user"."userId", chat."meetingId", chat."chatId", chat_with."userId";

CREATE OR REPLACE VIEW "v_chat_message_public" AS
SELECT cm.*, to_timestamp("createdTime" / 1000) AS "createdTimeAsDate"
FROM chat_message cm
WHERE cm."chatId" = 'MAIN-PUBLIC-GROUP-CHAT';

CREATE OR REPLACE VIEW "v_chat_message_private" AS
SELECT cu."userId", cm.*, to_timestamp("createdTime" / 1000) AS "createdTimeAsDate"
FROM chat_message cm
JOIN chat_user cu ON cu."meetingId" = cm."meetingId" AND cu."chatId" = cm."chatId"
WHERE cm."chatId" != 'MAIN-PUBLIC-GROUP-CHAT';



--============ Presentation / Annotation


CREATE TABLE "pres_presentation" (
	"presentationId" varchar(100) PRIMARY KEY,
	"meetingId" varchar(100) REFERENCES "meeting"("meetingId") ON DELETE CASCADE,
	"current" boolean,
	"downloadable" boolean,
	"removable" boolean
);
CREATE INDEX "idx_pres_presentation_meetingId" ON "pres_presentation"("meetingId");

CREATE TABLE "pres_page" (
	"pageId" varchar(100) PRIMARY KEY,
	"presentationId" varchar(100) REFERENCES "pres_presentation"("presentationId") ON DELETE CASCADE,
	"num" integer,
	"urls" TEXT,
	"current" boolean,
	"xOffset" NUMERIC,
	"yOffset" NUMERIC,
	"widthRatio" NUMERIC,
	"heightRatio" NUMERIC
);
CREATE INDEX "idx_pres_page_presentationId" ON "pres_page"("presentationId");

CREATE TABLE "pres_annotation" (
	"annotationId" varchar(100) PRIMARY KEY,
	"pageId" varchar(100) REFERENCES "pres_page"("pageId") ON DELETE CASCADE,
	"userId" varchar(50),
	"annotationInfo" TEXT,
	"lastHistorySequence" integer,
	"lastUpdatedAt" timestamp DEFAULT now()
);
CREATE INDEX "idx_pres_annotation_pageId" ON "pres_annotation"("pageId");
CREATE INDEX "idx_pres_annotation_updatedAt" ON "pres_annotation"("pageId","lastUpdatedAt");

CREATE TABLE "pres_annotation_history" (
	"sequence" serial PRIMARY KEY,
	"annotationId" varchar(100),
	"pageId" varchar(100) REFERENCES "pres_page"("pageId") ON DELETE CASCADE,
	"userId" varchar(50),
	"annotationInfo" TEXT
--	"lastUpdatedAt" timestamp DEFAULT now()
);
CREATE INDEX "idx_pres_annotation_history_pageId" ON "pres_annotation"("pageId");

CREATE VIEW "v_pres_annotation_curr" AS
SELECT p."meetingId", pp."presentationId", pa.*
FROM pres_presentation p
JOIN pres_page pp ON pp."presentationId" = p."presentationId"
JOIN pres_annotation pa ON pa."pageId" = pp."pageId"
WHERE p."current" IS true
AND pp."current" IS true;

CREATE VIEW "v_pres_annotation_history_curr" AS
SELECT p."meetingId", pp."presentationId", pah.*
FROM pres_presentation p
JOIN pres_page pp ON pp."presentationId" = p."presentationId"
JOIN pres_annotation_history pah ON pah."pageId" = pp."pageId"
WHERE p."current" IS true
AND pp."current" IS true;

CREATE TABLE "pres_page_writers" (
	"pageId" varchar(100)  REFERENCES "pres_page"("pageId") ON DELETE CASCADE,
    "userId" varchar(50) REFERENCES "user"("userId") ON DELETE CASCADE,
    "changedModeOn" bigint,
    CONSTRAINT "pres_page_writers_pkey" PRIMARY KEY ("pageId","userId")
);
create index "idx_pres_page_writers_userID" on "pres_page_writers"("userId");

CREATE OR REPLACE VIEW "v_pres_page_writers" AS
SELECT
	u."meetingId",
	"pres_presentation"."presentationId",
	"pres_page_writers" .*,
	CASE WHEN pres_presentation."current" IS true AND pres_page."current" IS true THEN true ELSE false END AS "isCurrentPage"
FROM "pres_page_writers"
JOIN "user" u ON u."userId" = "pres_page_writers"."userId"
JOIN "pres_page" ON "pres_page"."pageId" = "pres_page_writers"."pageId"
JOIN "pres_presentation" ON "pres_presentation"."presentationId"  = "pres_page"."presentationId" ;

------------------------------------------------------------
-- Triggers to automatically control "user" flag "hasDrawPermissionOnCurrentPage"

CREATE OR REPLACE FUNCTION "update_user_hasDrawPermissionOnCurrentPage"("p_userId" varchar DEFAULT NULL, "p_meetingId" varchar DEFAULT NULL)
RETURNS VOID AS $$
DECLARE
    where_clause TEXT := '';
BEGIN
    IF "p_userId" IS NOT NULL THEN
        where_clause := format(' AND "userId" = %L', "p_userId");
    END IF;
    IF "p_meetingId" IS NOT NULL THEN
        where_clause := format('%s AND "meetingId" = %L', where_clause, "p_meetingId");
    END IF;

    IF where_clause <> '' THEN
        where_clause := substring(where_clause from 6);
        EXECUTE format('UPDATE "user"
						SET "hasDrawPermissionOnCurrentPage" =
						CASE WHEN presenter THEN TRUE
						WHEN EXISTS (
							SELECT 1 FROM "v_pres_page_writers" v
							WHERE v."userId" = "user"."userId"
							AND v."isCurrentPage" IS TRUE
						) THEN TRUE
						ELSE FALSE
						END  WHERE %s', where_clause);
    ELSE
        RAISE EXCEPTION 'No params provided';
    END IF;
END;
$$ LANGUAGE plpgsql;

-- user (on update presenter)
CREATE OR REPLACE FUNCTION update_user_presenter_trigger_func() RETURNS TRIGGER AS $$
BEGIN
    IF OLD."presenter" <> NEW."presenter" THEN
        PERFORM "update_user_hasDrawPermissionOnCurrentPage"(NEW."userId", NULL);
    END IF;
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER update_user_presenter_trigger AFTER UPDATE OF "presenter" ON "user"
FOR EACH ROW EXECUTE FUNCTION update_user_presenter_trigger_func();

-- pres_presentation (on update current)
CREATE OR REPLACE FUNCTION update_pres_presentation_current_trigger_func() RETURNS TRIGGER AS $$
BEGIN
    IF OLD."current" <> NEW."current" THEN
    	PERFORM "update_user_hasDrawPermissionOnCurrentPage"(NULL, NEW."meetingId");
    END IF;
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER update_pres_presentation_current_trigger AFTER UPDATE OF "current" ON "pres_presentation"
FOR EACH ROW EXECUTE FUNCTION update_pres_presentation_current_trigger_func();

-- pres_page (on update current)
CREATE OR REPLACE FUNCTION update_pres_page_current_trigger_func()
RETURNS TRIGGER AS $$
BEGIN
    IF OLD."current" <> NEW."current" THEN
    	PERFORM "update_user_hasDrawPermissionOnCurrentPage"(NULL, pres_presentation."meetingId")
        FROM pres_presentation
        WHERE "presentationId" = NEW."presentationId";
    END IF;
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER update_pres_page_current_trigger AFTER UPDATE OF "current" ON "pres_page"
FOR EACH ROW EXECUTE FUNCTION update_pres_page_current_trigger_func();

-- pres_page_writers (on insert, update or delete)
CREATE OR REPLACE FUNCTION ins_upd_del_pres_page_writers_trigger_func()
RETURNS TRIGGER AS $$
BEGIN
    IF TG_OP = 'UPDATE' or TG_OP = 'INSERT' THEN
        PERFORM "update_user_hasDrawPermissionOnCurrentPage"(NEW."userId", NULL);
    ELSIF TG_OP = 'DELETE' THEN
        PERFORM "update_user_hasDrawPermissionOnCurrentPage"(OLD."userId", NULL);
    END IF;
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER ins_upd_del_pres_page_writers_trigger AFTER INSERT OR UPDATE OR DELETE ON "pres_page_writers"
FOR EACH ROW EXECUTE FUNCTION ins_upd_del_pres_page_writers_trigger_func();

------------------------------------------------------------



CREATE TABLE "pres_page_cursor" (
	"pageId" varchar(100)  REFERENCES "pres_page"("pageId") ON DELETE CASCADE,
    "userId" varchar(50) REFERENCES "user"("userId") ON DELETE CASCADE,
    "xPercent" numeric,
    "yPercent" numeric,
    "lastUpdatedAt" timestamp DEFAULT now(),
    CONSTRAINT "pres_page_cursor_pkey" PRIMARY KEY ("pageId","userId")
);
create index "idx_pres_page_cursor_pageId" on "pres_page_cursor"("pageId");
create index "idx_pres_page_cursor_userID" on "pres_page_cursor"("userId");
create index "idx_pres_page_cursor_lastUpdatedAt" on "pres_page_cursor"("pageId","lastUpdatedAt");

CREATE VIEW "v_pres_page_cursor" AS
SELECT pres_presentation."meetingId", pres_page."presentationId", c.*,
        CASE WHEN pres_presentation."current" IS true AND pres_page."current" IS true THEN true ELSE false END AS "isCurrentPage"
FROM pres_page_cursor c
JOIN pres_page ON pres_page."pageId" = c."pageId"
JOIN pres_presentation ON pres_presentation."presentationId" = pres_page."presentationId";

