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bin.go
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bin.go
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package dbl
import (
"database/sql"
"errors"
"github.com/dustin/go-humanize"
"github.com/espebra/filebin2/ds"
"math/rand"
"path"
"regexp"
"strings"
"time"
)
var invalidBin = regexp.MustCompile("[^A-Za-z0-9-_.]")
type BinDao struct {
db *sql.DB
}
func (d *BinDao) ValidateInput(bin *ds.Bin) error {
// Reject invalid bins
if invalidBin.MatchString(bin.Id) {
return errors.New("The bin contains invalid characters.")
}
// Ensure decent length
if len(bin.Id) < 8 {
return errors.New("The bin is too short.")
}
if len(bin.Id) > 60 {
return errors.New("The bin is too long.")
}
// Do not allow the bin to start with .
if strings.HasPrefix(bin.Id, ".") {
return errors.New("Invalid bin specified.")
}
if bin.UpdatedAt.After(bin.ExpiredAt) {
return errors.New("The bin cannot be updated when it has expired.")
}
return nil
}
func (d *BinDao) GenerateId() string {
// TODO: Make sure the ID is unique
characters := []rune("abcdefghijklmnopqrstuvwxyz1234567890")
length := 16
id := make([]rune, length)
for i := range id {
id[i] = characters[rand.Intn(len(characters))]
}
return string(id)
}
func (d *BinDao) GetByID(id string) (bin ds.Bin, found bool, err error) {
// Get bin info
sqlStatement := "SELECT bin.id, bin.readonly, bin.downloads, COALESCE(SUM(file.downloads), 0), COALESCE(SUM(file.bytes), 0), COUNT(file.filename), bin.updated_at, bin.created_at, bin.approved_at, bin.expired_at, bin.deleted_at FROM bin LEFT JOIN file ON bin.id = file.bin_id AND file.in_storage=true AND file.deleted_at IS NULL WHERE bin.id = $1 GROUP BY bin.id LIMIT 1"
err = d.db.QueryRow(sqlStatement, id).Scan(&bin.Id, &bin.Readonly, &bin.Downloads, &bin.FileDownloads, &bin.Bytes, &bin.Files, &bin.UpdatedAt, &bin.CreatedAt, &bin.ApprovedAt, &bin.ExpiredAt, &bin.DeletedAt)
if err != nil {
if err == sql.ErrNoRows {
return bin, false, nil
} else {
return bin, false, err
}
}
// https://github.com/lib/pq/issues/329
bin.UpdatedAt = bin.UpdatedAt.UTC()
bin.CreatedAt = bin.CreatedAt.UTC()
bin.ExpiredAt = bin.ExpiredAt.UTC()
bin.BytesReadable = humanize.Bytes(bin.Bytes)
bin.UpdatedAtRelative = humanize.Time(bin.UpdatedAt)
bin.CreatedAtRelative = humanize.Time(bin.CreatedAt)
if bin.IsApproved() {
bin.ApprovedAt.Time = bin.ApprovedAt.Time.UTC()
bin.ApprovedAtRelative = humanize.Time(bin.ApprovedAt.Time)
}
bin.ExpiredAtRelative = humanize.Time(bin.ExpiredAt)
if bin.IsDeleted() {
bin.DeletedAt.Time = bin.DeletedAt.Time.UTC()
bin.DeletedAtRelative = humanize.Time(bin.DeletedAt.Time)
}
bin.URL = path.Join("/", bin.Id)
return bin, true, nil
}
func (d *BinDao) Insert(bin *ds.Bin) (err error) {
if err := d.ValidateInput(bin); err != nil {
return err
}
now := time.Now().UTC().Truncate(time.Microsecond)
downloads := uint64(0)
updates := uint64(0)
readonly := false
bin.ExpiredAt = bin.ExpiredAt.UTC().Truncate(time.Microsecond)
if bin.IsApproved() {
bin.ApprovedAt.Time = bin.ApprovedAt.Time.UTC().Truncate(time.Microsecond)
}
sqlStatement := "INSERT INTO bin (id, readonly, downloads, updates, updated_at, created_at, approved_at, expired_at) VALUES ($1, $2, $3, $4, $5, $6, $7, $8) RETURNING id"
if err := d.db.QueryRow(sqlStatement, bin.Id, readonly, downloads, updates, now, now, bin.ApprovedAt, bin.ExpiredAt).Scan(&bin.Id); err != nil {
return err
}
bin.UpdatedAt = now
bin.CreatedAt = now
bin.UpdatedAtRelative = humanize.Time(bin.UpdatedAt)
bin.CreatedAtRelative = humanize.Time(bin.CreatedAt)
if bin.IsApproved() {
bin.ApprovedAtRelative = humanize.Time(bin.ApprovedAt.Time)
}
bin.ExpiredAtRelative = humanize.Time(bin.ExpiredAt)
if bin.IsDeleted() {
bin.DeletedAtRelative = humanize.Time(bin.DeletedAt.Time)
}
bin.Downloads = downloads
bin.Readonly = readonly
return nil
}
func (d *BinDao) Upsert(bin *ds.Bin) (err error) {
if err := d.ValidateInput(bin); err != nil {
return err
}
now := time.Now().UTC().Truncate(time.Microsecond)
downloads := uint64(0)
updates := uint64(0)
readonly := false
bin.ExpiredAt = bin.ExpiredAt.UTC().Truncate(time.Microsecond)
if bin.IsApproved() {
bin.ApprovedAt.Time = bin.ApprovedAt.Time.UTC().Truncate(time.Microsecond)
}
sqlStatement := "INSERT INTO bin (id, readonly, downloads, updates, updated_at, created_at, approved_at, expired_at) VALUES ($1, $2, $3, $4, $5, $6, $7, $8) ON CONFLICT(id) DO UPDATE SET updated_at=$9 RETURNING id"
if err := d.db.QueryRow(sqlStatement, bin.Id, readonly, downloads, updates, now, now, bin.ApprovedAt, bin.ExpiredAt, now).Scan(&bin.Id); err != nil {
return err
}
bin.UpdatedAt = now
bin.CreatedAt = now
bin.UpdatedAtRelative = humanize.Time(bin.UpdatedAt)
bin.CreatedAtRelative = humanize.Time(bin.CreatedAt)
if bin.IsApproved() {
bin.ApprovedAt.Time = bin.ApprovedAt.Time.UTC()
bin.ApprovedAtRelative = humanize.Time(bin.ApprovedAt.Time)
}
bin.ExpiredAtRelative = humanize.Time(bin.ExpiredAt)
if bin.IsDeleted() {
bin.DeletedAtRelative = humanize.Time(bin.DeletedAt.Time)
}
bin.Downloads = downloads
bin.Readonly = readonly
b, found, err := d.GetByID(bin.Id)
if err != nil {
return err
}
if found {
bin = &b
}
return nil
}
func (d *BinDao) Update(bin *ds.Bin) (err error) {
var id string
now := time.Now().UTC().Truncate(time.Microsecond)
bin.ExpiredAt = bin.ExpiredAt.UTC().Truncate(time.Microsecond)
if err := d.ValidateInput(bin); err != nil {
return err
}
sqlStatement := "UPDATE bin SET readonly = $1, updated_at = $2, approved_at = $3, expired_at = $4, deleted_at = $5, updates = $6 WHERE id = $7 RETURNING id"
err = d.db.QueryRow(sqlStatement, bin.Readonly, now, bin.ApprovedAt, bin.ExpiredAt, bin.DeletedAt, bin.Updates, bin.Id).Scan(&id)
if err != nil {
return err
}
bin.UpdatedAt = now
bin.UpdatedAtRelative = humanize.Time(bin.UpdatedAt)
if bin.IsApproved() {
bin.ApprovedAt.Time = bin.ApprovedAt.Time.UTC()
bin.ApprovedAtRelative = humanize.Time(bin.ApprovedAt.Time)
}
if bin.IsDeleted() {
bin.DeletedAtRelative = humanize.Time(bin.DeletedAt.Time)
}
return nil
}
func (d *BinDao) Delete(bin *ds.Bin) (err error) {
sqlStatement := "DELETE FROM bin WHERE id = $1"
res, err := d.db.Exec(sqlStatement, bin.Id)
if err != nil {
return err
}
count, err := res.RowsAffected()
if err != nil {
return err
}
if count == 0 {
return errors.New("Bin does not exist")
} else {
return nil
}
}
func (d *BinDao) RegisterDownload(bin *ds.Bin) (err error) {
sqlStatement := "UPDATE bin SET downloads = downloads + 1 WHERE id = $1 RETURNING downloads"
err = d.db.QueryRow(sqlStatement, bin.Id).Scan(&bin.Downloads)
if err != nil {
return err
}
return nil
}
func (d *BinDao) RegisterUpdate(bin *ds.Bin) (err error) {
bin.UpdatedAt = time.Now().UTC().Truncate(time.Microsecond)
sqlStatement := "UPDATE bin SET updates = udates + 1, updated_at = $1 WHERE id = $2 RETURNING updates"
err = d.db.QueryRow(sqlStatement, bin.UpdatedAt, bin.Id).Scan(&bin.Updates)
if err != nil {
return err
}
bin.UpdatedAtRelative = humanize.Time(bin.UpdatedAt)
return nil
}
func (d *BinDao) GetAll() (bins []ds.Bin, err error) {
now := time.Now().UTC().Truncate(time.Microsecond)
sqlStatement := "SELECT bin.id, bin.readonly, bin.downloads, COALESCE(SUM(file.downloads), 0), COALESCE(SUM(file.bytes), 0), COUNT(file.filename), bin.updates, bin.updated_at, bin.created_at, bin.approved_at, bin.expired_at, bin.deleted_at FROM bin LEFT JOIN file ON bin.id=file.bin_id AND file.deleted_at IS NULL AND file.in_storage = true WHERE bin.expired_at > $1 AND bin.deleted_at IS NULL GROUP BY bin.id ORDER BY bin.updated_at DESC"
bins, err = d.binQuery(sqlStatement, now)
return bins, err
}
func (d *BinDao) GetPendingDelete() (bins []ds.Bin, err error) {
now := time.Now().UTC().Truncate(time.Microsecond)
sqlStatement := "SELECT bin.id, bin.readonly, bin.downloads, COALESCE(SUM(file.downloads), 0), COALESCE(SUM(file.bytes), 0), COUNT(filename) AS files, bin.updates, bin.updated_at, bin.created_at, bin.approved_at, bin.expired_at, bin.deleted_at FROM bin INNER JOIN file ON bin.id = file.bin_id AND file.in_storage=true WHERE bin.expired_at < $1 OR bin.deleted_at IS NOT NULL GROUP BY bin.id"
bins, err = d.binQuery(sqlStatement, now)
return bins, err
}
func (d *BinDao) GetLastUpdated(limit int) (bins []ds.Bin, err error) {
now := time.Now().UTC().Truncate(time.Microsecond)
sqlStatement := "SELECT bin.id, bin.readonly, bin.downloads, COALESCE(SUM(file.downloads), 0), COALESCE(SUM(file.bytes), 0), COUNT(file.filename), bin.updates, bin.updated_at, bin.created_at, bin.approved_at, bin.expired_at, bin.deleted_at FROM bin LEFT JOIN file ON bin.id=file.bin_id AND file.deleted_at IS NULL AND file.in_storage = true WHERE bin.expired_at > $1 AND bin.deleted_at IS NULL GROUP BY bin.id ORDER BY bin.updated_at DESC LIMIT $2"
bins, err = d.binQuery(sqlStatement, now, limit)
return bins, err
}
func (d *BinDao) GetByBytes(limit int) (bins []ds.Bin, err error) {
now := time.Now().UTC().Truncate(time.Microsecond)
sqlStatement := "SELECT bin.id, bin.readonly, bin.downloads, COALESCE(SUM(file.downloads), 0), COALESCE(SUM(file.bytes), 0), COUNT(file.filename), bin.updates, bin.updated_at, bin.created_at, bin.approved_at, bin.expired_at, bin.deleted_at FROM bin LEFT JOIN file ON bin.id=file.bin_id AND file.deleted_at IS NULL AND file.in_storage = true WHERE bin.expired_at > $1 AND bin.deleted_at IS NULL GROUP BY bin.id ORDER BY COALESCE(SUM(file.bytes), 0) DESC LIMIT $2"
bins, err = d.binQuery(sqlStatement, now, limit)
return bins, err
}
func (d *BinDao) GetByDownloads(limit int) (bins []ds.Bin, err error) {
now := time.Now().UTC().Truncate(time.Microsecond)
sqlStatement := "SELECT bin.id, bin.readonly, bin.downloads, COALESCE(SUM(file.downloads), 0), COALESCE(SUM(file.bytes), 0), COUNT(file.filename), bin.updates, bin.updated_at, bin.created_at, bin.approved_at, bin.expired_at, bin.deleted_at FROM bin LEFT JOIN file ON bin.id=file.bin_id AND file.deleted_at IS NULL AND file.in_storage = true WHERE bin.expired_at > $1 AND bin.deleted_at IS NULL GROUP BY bin.id ORDER BY bin.downloads + COALESCE(SUM(file.downloads), 0) DESC LIMIT $2"
bins, err = d.binQuery(sqlStatement, now, limit)
return bins, err
}
func (d *BinDao) GetByFiles(limit int) (bins []ds.Bin, err error) {
now := time.Now().UTC().Truncate(time.Microsecond)
sqlStatement := "SELECT bin.id, bin.readonly, bin.downloads, COALESCE(SUM(file.downloads), 0), COALESCE(SUM(file.bytes), 0), COUNT(file.filename), bin.updates, bin.updated_at, bin.created_at, bin.approved_at, bin.expired_at, bin.deleted_at FROM bin LEFT JOIN file ON bin.id=file.bin_id AND file.deleted_at IS NULL AND file.in_storage = true WHERE bin.expired_at > $1 AND bin.deleted_at IS NULL GROUP BY bin.id ORDER BY COUNT(file.filename) DESC LIMIT $2"
bins, err = d.binQuery(sqlStatement, now, limit)
return bins, err
}
func (d *BinDao) GetByCreated(limit int) (bins []ds.Bin, err error) {
now := time.Now().UTC().Truncate(time.Microsecond)
sqlStatement := "SELECT bin.id, bin.readonly, bin.downloads, COALESCE(SUM(file.downloads), 0), COALESCE(SUM(file.bytes), 0), COUNT(file.filename), bin.updates, bin.updated_at, bin.created_at, bin.approved_at, bin.expired_at, bin.deleted_at FROM bin LEFT JOIN file ON bin.id=file.bin_id AND file.deleted_at IS NULL AND file.in_storage = true WHERE bin.expired_at > $1 AND bin.deleted_at IS NULL GROUP BY bin.id ORDER BY bin.created_at ASC LIMIT $2"
bins, err = d.binQuery(sqlStatement, now, limit)
return bins, err
}
func (d *BinDao) binQuery(sqlStatement string, params ...interface{}) (bins []ds.Bin, err error) {
rows, err := d.db.Query(sqlStatement, params...)
if err != nil {
return bins, err
}
defer rows.Close()
for rows.Next() {
var bin ds.Bin
err = rows.Scan(&bin.Id, &bin.Readonly, &bin.Downloads, &bin.FileDownloads, &bin.Bytes, &bin.Files, &bin.Updates, &bin.UpdatedAt, &bin.CreatedAt, &bin.ApprovedAt, &bin.ExpiredAt, &bin.DeletedAt)
if err != nil {
return bins, err
}
// https://github.com/lib/pq/issues/329
bin.UpdatedAt = bin.UpdatedAt.UTC()
bin.CreatedAt = bin.CreatedAt.UTC()
bin.ExpiredAt = bin.ExpiredAt.UTC()
bin.UpdatedAtRelative = humanize.Time(bin.UpdatedAt)
bin.CreatedAtRelative = humanize.Time(bin.CreatedAt)
if bin.IsApproved() {
bin.ApprovedAt.Time = bin.ApprovedAt.Time.UTC()
bin.ApprovedAtRelative = humanize.Time(bin.ApprovedAt.Time)
}
bin.ExpiredAtRelative = humanize.Time(bin.ExpiredAt)
if bin.IsDeleted() {
bin.DeletedAt.Time = bin.DeletedAt.Time.UTC()
bin.DeletedAtRelative = humanize.Time(bin.DeletedAt.Time)
}
bin.BytesReadable = humanize.Bytes(bin.Bytes)
bin.URL = path.Join("/", bin.Id)
bins = append(bins, bin)
}
return bins, nil
}