begin transaction;

create table weight (
	date datetime default (datetime('now', '+2 hours')),
	weight real not null
);


create index weightDateIdx on weight(date);
create index weightDailyIdx on weight(strftime('%Y-%m-%d', date));
create index weightWeeklyIdx on weight(strftime('%Y-%W', date));
create index weightMonthlyIdx on weight(strftime('%Y-%m', date));
create index weightYearlyIdx on weight(strftime('%Y', date));

drop view if exists weightView;
drop view if exists weightDaily;
drop view if exists weightWeekly;
drop view if exists weightMonthly;
drop view if exists weightYearly;

create view weightView as
select rowid,
	date,
	round(weight, 2) as weight
from weight
order by date desc;

create view weightDaily as
select strftime('%Y-%m-%d', date) as period,
	round(avg(weight), 2) as amount
	from weight
group by strftime('%Y-%m-%d', date)
order by date desc;

create view weightWeekly as
select strftime('%Y-%W', date) as period,
	round(avg(weight), 2) as amount
	from weight
group by strftime('%Y-%W', date)
order by date desc;

create view weightMonthly as
select strftime('%Y-%m', date) as period,
	round(avg(weight), 2) as amount
	from weight
group by strftime('%Y-%m', date)
order by date desc;

create view weightYearly as
select strftime('%Y', date) as period,
	round(avg(weight), 2) as amount
	from weight
group by strftime('%Y', date)
order by date desc;

create table food(
	date datetime default (datetime('now', '+2 hours')),
	food varchar not null,
	description varchar,
	amount real not null,
	per100 real default 0,
	energy generated always as (coalesce(amount, 0) * coalesce(per100, 0) / 100) stored
);

create index dailyIdx on food(strftime('%Y-%m-%d', date));
create index weeklyIdx on food(strftime('%Y-%W', date));
create index monthlyIdx on food(strftime('%Y-%m', date));
create index yearlyIdx on food(strftime('%Y', date));
create index dateIdx on food(date);
create index foodIdx on food(food);

drop view if exists foodView;
drop view if exists foodDaily;
drop view if exists foodWeekly;
drop view if exists foodMonthly;
drop view if exists foodYearly;
drop view if exists foodRecent;

create view foodView as
select rowid,
	date,
	food,
	description,
	round(amount, 2) as amount,
	round(per100, 2) as per100,
	round(energy, 2) as energy
from food;

create view foodDaily as
select strftime('%Y-%m-%d', date) as period,
	round(sum(amount), 2) as amount,
	round(avg(per100), 2) as avgPer100,
	round(sum(energy), 2) as energy
from food
group by strftime('%Y-%m-%d', date)
order by date desc;

create view foodWeekly as
select strftime('%Y-%W', date) as period,
	round(sum(amount), 2) as amount,
	round(avg(per100), 2) as avgPer100,
	round(sum(energy), 2) as energy
from food
group by strftime('%Y-%W', date)
order by date desc;

create view foodMonthly as
select strftime('%Y-%m', date) as period,
	round(sum(amount), 2) as amount,
	round(avg(per100), 2) as avgPer100,
	round(sum(energy), 2) as energy
from food
group by strftime('%Y-%m', date)
order by date desc;

create view foodYearly as
select strftime('%Y', date) as period,
	round(sum(amount), 2) as amount,
	round(avg(per100), 2) as avgPer100,
	round(sum(energy), 2) as energy
from food
group by strftime('%Y', date)
order by date desc;

create view foodRecent as
select rowid,
	*
from food
order by date desc
limit 10;

drop trigger if exists getper100;
create trigger getper100 after
insert on food
begin
update food
set per100 = coalesce(
		new .per100,
		(
			select per100
			from food
			where food = new .food
				and per100 is not null
			order by date desc
			limit 1
		)
	)
where rowid = new .rowid;
end;

commit;