129 lines
3.2 KiB
Go
129 lines
3.2 KiB
Go
package database
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import (
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"database/sql"
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"errors"
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"log"
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"gopkg.in/guregu/null.v4"
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)
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type OS struct {
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ID int `json:"id"`
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Distribution null.String `json:"distribution"`
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Version null.String `json:"version"`
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EndOfSupport null.String `json:"EndOfSupport"`
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}
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func GetOS(db *sql.DB) ([]OS, error) {
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var oses []OS
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rows, err := db.Query("SELECT * FROM dashboard_os")
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if err != nil {
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log.Println("Error querying list of OS", err)
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}
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defer func(rows *sql.Rows) {
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err := rows.Close()
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if err != nil {
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log.Println("Error closing rows stream")
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}
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}(rows)
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for rows.Next() {
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var os OS
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err := rows.Scan(&os.ID, &os.Distribution, &os.Version, &os.EndOfSupport)
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if err != nil {
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log.Println("Error building list", err)
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}
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oses = append(oses, os)
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}
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return oses, err
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}
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func GetOSbyID(db *sql.DB, id int64) (OS, error) {
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var os OS
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if err := db.QueryRow("SELECT * FROM dashboard_os where id = ?", id).Scan(&os.ID, &os.Distribution, &os.Version, &os.EndOfSupport); err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return os, nil
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}
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log.Println("Error getting OS by ID", err)
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}
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return os, nil
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}
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func GetDistributionList(db *sql.DB) ([]null.String, error) {
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var list []null.String
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rows, err := db.Query("SELECT DISTINCT distribution FROM dashboard_os")
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if err != nil {
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log.Println("Error getting distribution list", err)
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}
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for rows.Next() {
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var os OS
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err := rows.Scan(&os.Distribution)
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if err != nil {
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log.Println("Error building distribution list", err)
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}
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list = append(list, os.Distribution)
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}
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return list, nil
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}
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func GetVersionsByDistributionList(db *sql.DB, d string) ([]null.String, error) {
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var list []null.String
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rows, err := db.Query("SELECT DISTINCT version FROM dashboard_os where distribution = ?", d)
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if err != nil {
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log.Println("Error getting distribution list", err)
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}
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for rows.Next() {
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var os OS
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err := rows.Scan(&os.Distribution)
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if err != nil {
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log.Println("Error building distribution list", err)
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}
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list = append(list, os.Distribution)
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}
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return list, nil
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}
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func checkIfOsExists(os OS, db *sql.DB) bool {
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row := db.QueryRow("SELECT distribution, version FROM dashboard_os WHERE distribution = ? AND version = ?", os.Distribution, os.Version)
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err := row.Scan(&os.Distribution, &os.Version)
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return !errors.Is(err, sql.ErrNoRows)
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}
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func CreateOS(os OS, db *sql.DB) error {
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if checkIfOsExists(os, db) {
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log.Println("OS already exists")
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return nil
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}
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q, err := db.Prepare("INSERT INTO `dashboard_os` (`distribution`,`version`,`end_of_support`) VALUES (?,?,?)")
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if err != nil {
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log.Println("Error creating query", err)
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return err
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}
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_, err = q.Exec(&os.Distribution, &os.Version, &os.EndOfSupport)
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if err != nil {
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log.Println("Error inserting OS", err)
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return err
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}
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return nil
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}
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func DeleteOS(os OS, db *sql.DB) (int, error) {
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if !checkIfOsExists(os, db) {
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log.Println("OS does not exist, nothing to delete")
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return 404, nil
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}
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q, err := db.Prepare("DELETE FROM dashboard_os WHERE distribution = ? AND version = ?")
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if err != nil {
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log.Println("Error deleting OS", err)
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return 500, err
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}
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_, err = q.Exec(&os.Distribution, &os.Version)
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if err != nil {
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log.Println("Error deleting OS", err)
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return 500, err
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}
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log.Println("OS deleted")
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return 200, nil
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}
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