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package official_climb
import (
"database/sql"
"fmt"
"time"
"github.com/jftuga/geodist"
)
const columns = "id, name, start_latitude, start_longitude, end_latitude, end_longitude, created_at, updated_at"
func Create(db *sql.DB, climb OfficialClimb) (OfficialClimb, error) {
if err := climb.validate(); err != nil {
return OfficialClimb{}, err
}
result, err := db.Exec(`
INSERT INTO official_climbs (name, start_latitude, start_longitude, end_latitude, end_longitude)
VALUES (?, ?, ?, ?, ?)
`, climb.Name, climb.StartCoord.Lat, climb.StartCoord.Lon, climb.EndCoord.Lat, climb.EndCoord.Lon)
if err != nil {
return OfficialClimb{}, fmt.Errorf("create official climb: %w", err)
}
id, err := result.LastInsertId()
if err != nil {
return OfficialClimb{}, fmt.Errorf("read official climb id: %w", err)
}
created, found, err := GetByID(db, id)
if err != nil {
return OfficialClimb{}, err
}
if !found {
return OfficialClimb{}, fmt.Errorf("official climb %d was not found after creation", id)
}
return created, nil
}
func List(db *sql.DB) ([]OfficialClimb, error) {
rows, err := db.Query("SELECT " + columns + " FROM official_climbs ORDER BY id")
if err != nil {
return nil, fmt.Errorf("list official climbs: %w", err)
}
defer rows.Close()
climbs := make([]OfficialClimb, 0)
for rows.Next() {
climb, err := scan(rows)
if err != nil {
return nil, err
}
climbs = append(climbs, climb)
}
if err := rows.Err(); err != nil {
return nil, fmt.Errorf("iterate official climbs: %w", err)
}
return climbs, nil
}
func GetByID(db *sql.DB, id int64) (OfficialClimb, bool, error) {
row := db.QueryRow("SELECT "+columns+" FROM official_climbs WHERE id = ?", id)
climb, err := scan(row)
if err == sql.ErrNoRows {
return OfficialClimb{}, false, nil
}
if err != nil {
return OfficialClimb{}, false, fmt.Errorf("get official climb %d: %w", id, err)
}
return climb, true, nil
}
type scanner interface {
Scan(dest ...any) error
}
func scan(s scanner) (OfficialClimb, error) {
var (
climb OfficialClimb
startLatitude, startLongitude float64
endLatitude, endLongitude float64
createdAt, updatedAt string
)
if err := s.Scan(&climb.ID, &climb.Name, &startLatitude, &startLongitude, &endLatitude, &endLongitude, &createdAt, &updatedAt); err != nil {
return OfficialClimb{}, err
}
climb.StartCoord = geodist.Coord{Lat: startLatitude, Lon: startLongitude}
climb.EndCoord = geodist.Coord{Lat: endLatitude, Lon: endLongitude}
var err error
climb.CreatedAt, err = time.Parse(time.RFC3339, createdAt)
if err != nil {
return OfficialClimb{}, fmt.Errorf("invalid official_climbs.created_at: %w", err)
}
climb.UpdatedAt, err = time.Parse(time.RFC3339, updatedAt)
if err != nil {
return OfficialClimb{}, fmt.Errorf("invalid official_climbs.updated_at: %w", err)
}
return climb, nil
}
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