108 lines
3.0 KiB
Go
108 lines
3.0 KiB
Go
package main
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import (
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"database/sql"
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"log"
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"time"
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)
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// DeviceType : holds information about a specific DeviceType
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type DeviceType struct {
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ID int `json:"id"`
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Name string `json:"name"`
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CreatedAt time.Time `json:"createdAt"`
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UpdatedAt time.Time `json:"updatedAt"`
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}
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// DeviceTypes : a list of DeviceType items
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type DeviceTypes []DeviceType
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const deviceTypeTableCreationQuery = `CREATE TABLE IF NOT EXISTS deviceTypes (
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id int(10) unsigned AUTO_INCREMENT,
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name varchar(255),
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createdAt datetime,
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updatedAt datetime,
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UNIQUE KEY name (name),
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PRIMARY KEY (id)
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)`
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func ensureDeviceTypeTableExists(db *sql.DB) {
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if _, err := db.Exec(deviceTypeTableCreationQuery); err != nil {
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log.Fatal(err)
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}
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}
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func seedDeviceTypeData(db *sql.DB) {
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sqlQuery := `INSERT INTO deviceTypes VALUES
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(1,'CLX','2016-10-13 15:05:32','2016-10-13 15:05:32'),
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(2,'Micro800','2016-10-13 15:05:32','2016-10-13 15:05:32');`
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insStmt, insErr := db.Prepare(sqlQuery)
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if insErr != nil {
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panic(insErr.Error()) // proper error handling instead of panic in your app
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}
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defer insStmt.Close() // Close the statement when we leave main() / the program terminates
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insStmt.Exec()
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}
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// getDeviceType : used during GET command
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func (c *DeviceType) getDeviceType(db *sql.DB) error {
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return db.QueryRow("SELECT name, createdAt, updatedAt FROM deviceTypes WHERE id=?", c.ID).Scan(&c.Name, &c.CreatedAt, &c.UpdatedAt)
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}
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// updateDeviceType : used during PUT command
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func (c *DeviceType) updateDeviceType(db *sql.DB) error {
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updStmt, updErr := db.Prepare("UPDATE deviceTypes SET name=?, updatedAt=? WHERE id=?")
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if updErr != nil {
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panic(updErr.Error()) // proper error handling instead of panic in your app
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}
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defer updStmt.Close() // Close the statement when we leave main() / the program terminates
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_, err := updStmt.Exec(c.Name, time.Now(), c.ID)
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return err
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}
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// deleteDeviceType : used during DELETE command
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func (c *DeviceType) deleteDeviceType(db *sql.DB) error {
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_, err := db.Exec("DELETE FROM deviceTypes WHERE id=?", c.ID)
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return err
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}
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// createDeviceType : used during PUSH command
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func (c *DeviceType) createDeviceType(db *sql.DB) error {
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stmtIns, insErr := db.Prepare("INSERT INTO deviceTypes (name, createdAt, updatedAt) VALUES (?, ?, ?);")
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if insErr != nil {
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panic(insErr.Error()) // proper error handling instead of panic in your app
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}
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defer stmtIns.Close() // Close the statement when we leave main() / the program terminates
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_, err := stmtIns.Exec(c.Name, time.Now(), time.Now())
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return err
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}
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// getDeviceTypes : used during GET command for all
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func getDeviceTypes(db *sql.DB, start, count int) (DeviceTypes, error) {
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rows, err := db.Query(
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"SELECT id, name, createdAt, updatedAt FROM deviceTypes LIMIT ? OFFSET ?",
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count, start)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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deviceTypes := DeviceTypes{}
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for rows.Next() {
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var c DeviceType
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if err := rows.Scan(&c.ID, &c.Name, &c.CreatedAt, &c.UpdatedAt); err != nil {
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return nil, err
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}
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deviceTypes = append(deviceTypes, c)
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}
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return deviceTypes, nil
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}
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