focus/focus-projects/db.go

90 lines
1.5 KiB
Go

package main
import (
"database/sql"
)
var db *sql.DB
type Project struct {
ID int `json:"id"`
Title string `json:"title"`
}
func InitDB(driver string, connStr string) error {
var err error
db, err = sql.Open(driver, connStr)
if err != nil {
return err
}
_, err = db.Exec(`
CREATE TABLE IF NOT EXISTS projects (
id INTEGER PRIMARY KEY AUTOINCREMENT,
title TEXT
);
`)
if err != nil {
return err
}
return nil
}
func Create(p Project) (int, error) {
res, err := db.Exec("INSERT INTO projects (title) VALUES (?)", p.Title)
if err != nil {
return 0, err
}
id, err := res.LastInsertId()
if err != nil {
return 0, err
}
return int(id), nil
}
func GetAll() ([]Project, error) {
rows, err := db.Query("SELECT * FROM projects")
if err != nil {
return nil, err
}
defer rows.Close()
var projects []Project
for rows.Next() {
var p Project
if err := rows.Scan(&p.ID, &p.Title); err != nil {
return nil, err
}
projects = append(projects, p)
}
if err = rows.Err(); err != nil {
return nil, err
}
return projects, nil
}
func Get(id int) (*Project, error) {
var p Project
err := db.QueryRow("SELECT * FROM projects WHERE id = ?", id).Scan(&p.ID, &p.Title)
if err != nil {
return nil, err
}
return &p, nil
}
func Delete(id int) error {
_, err := db.Exec("DELETE FROM projects WHERE id = ?", id)
return err
}
func Update(p Project) error {
_, err := db.Exec("UPDATE projects SET title = ? WHERE id = ?", p.Title, p.ID)
return err
}