Implement basic food service

food.ddl

@@ -0,0 +1,187 @@
+begin transaction;
+
+create table weight (
+	date datetime default (datetime('now', '+2 hours')),
+	weight real not null
+);
+
+-- begin TRANSACTION;
+-- drop table if exists weight2;
+-- create table weight2 (
+-- 	date datetime default (datetime('now', '+2 hours')),
+-- 	weight real not null
+-- );
+-- insert into weight2(date, weight)
+-- select date, weight from weight;
+-- drop table weight;
+-- alter table weight2 rename to weight;
+-- commit;
+
+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;
+
+-- Daily Summary View
+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;
+
+-- Weekly Summary View
+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;
+
+-- Monthly Summary View
+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;
+
+-- Yearly Summary View
+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
+);
+
+-- begin transaction;
+-- drop table if exists food2;
+-- create table food2(
+-- 	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
+-- );
+-- insert into food2(date, food, description, amount, per100)
+-- select date, food, description, amount, per100 from food;
+-- drop table food;
+-- alter table food2 rename to food;
+-- commit;
+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 daily;
+drop view if exists weekly;
+drop view if exists monthly;
+drop view if exists yearly;
+drop view if exists recent;
+
+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;
+
+-- Daily Summary View
+create view daily 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;
+
+-- Weekly Summary View
+create view weekly 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;
+
+-- Monthly Summary View
+create view monthly 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;
+
+-- Yearly Summary View
+create view yearly 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;
+
+-- Recent
+create view recent 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;
+
+create table settings (key text, value text) --rollback;
+commit;

foodservice.go

@@ -1,5 +1,104 @@
 package main
 
-type FoodService struct {
+import (
+	"database/sql"
+	"fmt"
+	"log"
+)
+
+type (
+	FoodService struct {
 		db *DB
+	}
+	Food struct {
+		rowid      int
+		date       string
+		food       string
+		descripton string
+		amount     float32
+		per100     float32
+		energy     float32
+	}
+	AggregatedFood struct {
+		period    string
+		amount    float32
+		avgPer100 float32
+		energy    float32
+	}
+)
+
+const foodColumns = "rowid, date, food, description, amount, per100, energy"
+const foodAggregatedColumns = "period, amount, avgPer100, energy"
+
+func (s *FoodService) GetRecent() ([]Food, error) {
+	var res []Food
+	if s.db == nil || !s.db.Ready { 
+		return res, fmt.Errorf("cannot get recent food, db is nil or is not ready")
+	}
+
+	row, _ := s.db.readConn.Query(fmt.Sprintf("SELECT %s from foodView WHERE date > datetime('now', '-%s days')", foodColumns, Settings.FoodDaysLookback))
+
+	var rows []Food
+	for row.Next() {
+		var food Food
+		err := row.Scan(&food.rowid, &food.date, &food.food, &food.descripton, &food.amount, &food.per100, &food.energy)
+		if err != nil {
+			log.Printf("error scanning row: %v", err)
+			continue
+		}
+
+		rows = append(rows, food)
+	}
+
+	log.Printf("%++v", rows)
+
+	return res, nil
+}
+
+func (s *FoodService) Create(food Food) (Food, error) {
+	if s.db == nil || !s.db.Ready {
+		return food, fmt.Errorf("cannot create food, db is nil or is not ready")
+	}
+	if food.food == "" {
+		return food, fmt.Errorf("cannot create food, food is empty")
+	}
+	if food.amount <= 0 {
+		return food, fmt.Errorf("cannot create food, amount is less than or equal to 0")
+	}
+	
+	var res sql.Result
+	var err error
+	if food.per100 > 0 {
+		res, err = s.db.writeConn.Exec("INSERT INTO food (food, description, amount, per100) VALUES (?, ?, ?, ?)", food.food, food.descripton, food.amount, food.per100)
+		if err != nil {
+			return food, fmt.Errorf("error inserting food: %v", err)
+		}
+	} else {
+		res, err = s.db.writeConn.Exec("INSERT INTO food (food, description, amount) VALUES (?, ?, ?)", food.food, food.descripton, food.amount)
+		if err != nil {
+			return food, fmt.Errorf("error inserting food: %v", err)
+		}
+	}
+
+	rowid, err := res.LastInsertId()
+	if err != nil {
+		return food, fmt.Errorf("error getting last insert id: %v", err)
+	}
+
+	return s.GetByRowid(rowid)
+}
+
+func (s *FoodService) GetByRowid(rowid int64) (Food, error) {
+	var res Food
+	if s.db == nil || !s.db.Ready {
+		return res, fmt.Errorf("cannot get food by rowid, db is nil or is not ready")
+	}
+
+	row := s.db.readConn.QueryRow(fmt.Sprintf("SELECT %s from foodView WHERE rowid = ?", foodColumns), rowid)
+	err := row.Scan(&res.rowid, &res.date, &res.food, &res.descripton, &res.amount, &res.per100, &res.energy)
+	if err != nil {
+		return res, fmt.Errorf("error scanning row: %v", err)
+	}
+
+	return res, nil
 }

main.go

@@ -53,7 +53,22 @@ func main() {
 		Error.Printf("%++v", err)
 		os.Exit(1)
 	}
-	log.Println(Settings)
+	log.Printf("Loaded settings as: %++v", Settings)
+
+	foodService := FoodService{db: &db}
+
+	// _, err = foodService.GetRecent()
+	// if err != nil {
+	// 	Error.Printf("%++v", err)
+	// 	os.Exit(1)
+	// }
+
+	food, err := foodService.Create(Food{food: "test", amount: 1})
+	if err != nil {
+		Error.Printf("%++v", err)
+		os.Exit(1)
+	}
+	log.Println(food)
 
 	log.Println("done")
 	wg.Wait()

types.go

@@ -3,21 +3,7 @@ package main
 import "time"
 
 type (
-	Food struct {
+
-		rowid      int
-		date       time.Time
-		food       string
-		descripton string
-		amount     float32
-		per100     float32
-		energy     float32
-	}
-	AggregatedFood struct {
-		period    string
-		amount    float32
-		avgPer100 float32
-		energy    float32
-	}
 	Weight struct {
 		rowid  int
 		date   time.Time