pragma foreign_keys = off;

create table if not exists customers (
	id integer primary key autoincrement,
	name text check(name is null or trim(name) <> '' and length(name) < 256),	
	email text check(email is null or trim(email) <> '' and length(email) < 128),
	password text check(password is null or length(password) > 7 and length(password) < 64),
	telegram_id integer,
	plan integer,
	json_balance text default '{}',
	is_blocked integer default 0,
	json_company text default '{}',
	upload_chat_id	integer,
	json_backup_server text default '{}',
	json_backup_params text default '{}',
	json_settings text default '{}'
) strict;

create table if not exists projects (
	id integer primary key autoincrement,
	customer_id integer references customers(id) on delete cascade,	
	name text not null check(trim(name) <> '' and length(name) < 256),
	description text check(description is null or length(description) < 4096),
	logo text,
	is_logo_bg integer default 0,
	is_archived integer default 0
) strict;

create table if not exists chats (
	id integer primary key autoincrement,
	project_id integer references projects(id) on delete cascade,
	name text,
	telegram_id integer,
	description text,
	logo text,
	access_hash integer,
	is_channel integer check(is_channel in (0, 1)) default 0,
	bot_can_ban integer default 0,
	owner_id integer references users(id) on delete set null,
	user_count integer,
	last_update_time integer
);
create unique index if not exists idx_chats_telegram_id on chats (telegram_id); 

create table if not exists users (
	id integer primary key autoincrement,
	telegram_id integer,
	access_hash integer,
	firstname text check(firstname is null or length(firstname) < 256),
	lastname text check(lastname is null or length(lastname) < 256),
	username text check(username is null or length(username) < 256),
	photo_id integer,
	photo text,
	language_code text,	
	json_settings text default '{}'
) strict;
create unique index if not exists idx_users_telegram_id on users (telegram_id); 

create table if not exists user_details (
	user_id integer references users(id) on delete cascade,
	project_id integer references projects(id) on delete cascade,
	fullname text check(fullname is null or length(fullname) < 256),
	email text check(email is null or length(email) < 256),
	phone text check(phone is null or length(phone) < 256),
	role text check(role is null or length(role) < 256),
	department text check(department is null or length(department) < 256),
	is_blocked integer check(is_blocked in (0, 1)) default 0,
	primary key (user_id, project_id)
) strict;

create table if not exists tasks (
	id integer primary key autoincrement,
	project_id integer references projects(id) on delete cascade,	
	name text not null check(trim(name) <> '' and length(name) < 4096),
	created_by integer references users(id) on delete set null,
	assigned_to integer references users(id) on delete set null,
	closed_by integer references users(id) on delete set null,
	priority integer check(priority in (0, 1, 2, 3, 4, 5)) default 0,
	status integer check(status >= 1 and status <= 10) default 1,
	time_spent integer check(time_spent is null or time_spent > 0 and time_spent < 44640), -- one month
	create_date integer,
	plan_date integer,
	close_date integer
) strict;

create table if not exists meetings (
	id integer primary key autoincrement,
	project_id integer references projects(id) on delete cascade,
	name text not null check(trim(name) <> '' and length(name) < 4096),
	description text check(description is null or length(description) < 4096),
	created_by integer references users(id) on delete set null,
	meet_date integer
) strict;

create table if not exists files (
	id integer primary key autoincrement,
	project_id integer references projects(id) on delete cascade,
	origin_chat_id integer references chats(id) on delete set null,
	origin_message_id integer,
	chat_id integer references chats(id) on delete set null,
	message_id integer,
	file_id integer,
	access_hash integer,
	filename text not null check(length(filename) < 256),
	mime text check(mime is null or length(mime) < 128),
	caption text check(caption is null or length(caption) < 4096),
	size integer,
	published_by integer references users(id) on delete set null, 
	published integer, 
	parent_type integer check(parent_type in (0, 1, 2)) default 0,
	parent_id integer, 
	backup_state integer default 0
) strict;

create table if not exists companies (
	id integer primary key autoincrement,
	project_id integer references projects(id) on delete cascade,
	name text not null check(length(name) < 4096),
	address text check(address is null or length(address) < 512),
	email text check(email is null or length(email) < 128),
	phone text check(phone is null or length(phone) < 128),
	site text check(site is null or length(site) < 128),
	description text check(description is null or length(description) < 4096),
	logo text
) strict;

create table if not exists company_mappings (
	project_id integer references projects(id) on delete cascade,
	company_id integer references companies(id) on delete cascade,
	show_as_id integer references companies(id) on delete cascade,
	show_to_id integer references companies(id) on delete cascade
) strict;

create table if not exists task_users (
	task_id integer references tasks(id) on delete cascade,
	user_id integer references users(id) on delete cascade,
	primary key (task_id, user_id)
) without rowid;

create table if not exists meeting_users (
	meeting_id integer references meetings(id) on delete cascade,
	user_id integer references users(id) on delete cascade,
	primary key (meeting_id, user_id)
) without rowid;

create table if not exists company_users (
	company_id integer references companies(id) on delete cascade,
	user_id integer references users(id) on delete cascade,
	primary key (company_id, user_id)
) without rowid;

create table if not exists chat_users (
	chat_id integer references chats(id) on delete cascade,
	user_id integer references users(id) on delete cascade,
	primary key (chat_id, user_id)
) without rowid;

pragma foreign_keys = on;


create trigger if not exists trg_chats_update after update on chats
when NEW.project_id is null
begin
	delete from chat_users where chat_id = NEW.id;
end;