vegan-barcode/internal/database/database.go

88 lines
1.9 KiB
Go

package main
import (
"context"
"fmt"
"os"
"time"
"github.com/vingarcia/ksql"
"github.com/vingarcia/ksql/adapters/kpgx"
)
var ProductsTable = ksql.NewTable("products", "product_id")
var UserClaimsTable = ksql.NewTable("user_claims", "user_claim_id")
var AutomatedClaimsTable = ksql.NewTable("automated_claims", "automated_claim_id")
func main() {
ctx := context.Background()
// urlExample := "postgres://username:password@localhost:5432/database_name"
host := os.Getenv("PGHOST")
database := os.Getenv("DB_NAME")
connectString :=
fmt.Sprintf("postgres:///?host=%s&database=%s", host, database)
db, err := kpgx.New(ctx, connectString, ksql.Config{})
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to connect to database: %v\n", err)
os.Exit(1)
}
defer db.Close()
}
func createTables(db) {
_, err = db.Exec(ctx, `
CREATE TABLE IF NOT EXISTS products (
id INTEGER PRIMARY KEY,
system TEXT,
barcode TEXT,
created_at TIMESTAMPTZ
);
`)
if err != nil {
panic(err.Error())
}
_, err = db.Exec(ctx, `
CREATE TABLE IF NOT EXISTS user_claims (
id INTEGER PRIMARY KEY,
product_id INTEGER,
evidence_type INTEGER,
evidence JSONB,
claim INTEGER,
counter_claim INTEGER,
created_at TIMESTAMPTZ,
created_by TEXT,
CONSTRAINT fk_product_id FOREIGN KEY(product_id) REFERENCES products(id)
);
CREATE INDEX idx_user_claims_product_id ON user_claims USING HASH (product_id);
`)
if err != nil {
panic(err.Error())
}
_, err = db.Exec(ctx, `
CREATE TABLE IF NOT EXISTS automated_claims (
id INTEGER PRIMARY KEY,
product_id INTEGER,
worker_type INTEGER,
evidence JSONB,
claim INTEGER,
counter_claim INTEGER,
created_at TIMESTAMPTZ,
CONSTRAINT fk_product_id FOREIGN KEY(product_id) REFERENCES products(id)
);
CREATE INDEX idx_automated_claims_product_id ON automated_claims USING HASH (product_id);
`)
if err != nil {
panic(err.Error())
}
}