201 lines
3.8 KiB
Go
201 lines
3.8 KiB
Go
package storage
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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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"git.sp4ke.com/sp4ke/bit4sat/db"
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"github.com/jmoiron/sqlx"
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"github.com/mattn/go-sqlite3"
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)
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var DB = db.DB
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const (
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DBUploadSchema = `
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CREATE TABLE IF NOT EXISTS upload (
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id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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upload_id CHAR(20) NOT NULL,
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sha256 CHAR(32) NOT NULL,
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file_name CHAR(255) NOT NULL,
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file_type CHAR(255) DEFAULT '',
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file_size INT NOT NULL,
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file_ext CHAR(255) DEFAULT '',
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status INT DEFAULT 0,
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FOREIGN KEY (status) REFERENCES upload_status(type),
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UNIQUE (upload_id, sha256)
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);
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`
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DBUploadView = `
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CREATE VIEW IF NOT EXISTS upload_with_status
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AS SELECT
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upload.upload_id,
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upload.sha256,
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upload_status.status,
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upload.file_name,
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upload.file_type,
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upload.file_size,
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upload.file_ext
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FROM upload
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JOIN upload_status ON
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upload.status = upload_status.type
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`
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DBUploadStatusSchema = `CREATE TABLE IF NOT EXISTS upload_status
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(
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type INT NOT NULL PRIMARY KEY,
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status CHAR(255) NOT NULL UNIQUE
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)
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`
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QNewUpload = `INSERT INTO upload
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(upload_id, sha256, file_name, file_type, file_size, file_ext, status)
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VALUES
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(:upload_id, :sha256, :file_name, :file_type, :file_size, :file_ext, :status)`
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QSetStatus = `UPDATE upload SET status = :status WHERE upload_id = :upload_id `
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QGetByHashID = `SELECT * FROM upload
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WHERE
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sha256 = ?
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AND
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upload_id = ?`
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)
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const (
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UpNew = iota
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UpStored
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UpWaitingPayment
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UpReady
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)
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var UploadStatus = map[int]string{
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UpNew: "new upload",
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UpStored: "stored",
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UpWaitingPayment: "waiting payment",
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UpReady: "ready",
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}
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var (
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ErrDoesNotExist = errors.New("does not exist")
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ErrAlreadyExists = errors.New("already exists")
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)
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type Upload struct {
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ID string `db:"upload_id"`
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SHA256 string `db:"sha256"`
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FileName string `db:"file_name"`
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FileType string `db:"file_type"`
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FileSize int64 `db:"file_size"`
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FileExt string `db:"file_ext"`
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Status int `db:"status"`
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}
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// Returns true if id exists in DB
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func IdExists(id string) (exists bool, err error) {
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qUploadExists := `
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SELECT EXISTS (SELECT upload_id FROM upload where upload_id = ?)
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`
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err = DB.Sql.Get(&exists, qUploadExists, id)
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// No result found is also no result
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if err == sql.ErrNoRows {
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err = nil
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}
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return
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}
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// Get a file by upload id and hash
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func GetByHashID(sha256 string, id string) (*Upload, error) {
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var up Upload
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err := DB.Sql.Get(&up, QGetByHashID, sha256, id)
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if err == sql.ErrNoRows {
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return nil, ErrDoesNotExist
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}
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if err != nil {
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return nil, err
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}
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return &up, nil
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}
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func (u *Upload) TxSetState(tx *sqlx.Tx, status int) error {
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_, err := tx.NamedExec(QSetStatus, u)
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if err != nil {
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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 (u *Upload) TxWrite(tx *sqlx.Tx) error {
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_, err := tx.NamedExec(QNewUpload, u)
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sqlErr, isSqlErr := err.(sqlite3.Error)
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if isSqlErr && sqlErr.Code == sqlite3.ErrConstraint {
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return ErrAlreadyExists
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}
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if err != nil {
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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 (u *Upload) Write() error {
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_, err := DB.Sql.NamedExec(QNewUpload, u)
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sqlErr, isSqlErr := err.(sqlite3.Error)
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if isSqlErr && sqlErr.Code == sqlite3.ErrConstraint {
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return ErrAlreadyExists
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}
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if err != nil {
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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 init() {
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_, err := DB.Sql.Exec(DBUploadStatusSchema)
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if err != nil {
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log.Fatal(err)
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}
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_, err = DB.Sql.Exec(DBUploadSchema)
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if err != nil {
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log.Fatal(err)
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}
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_, err = DB.Sql.Exec(DBUploadView)
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if err != nil {
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log.Fatal(err)
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}
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// Populate status types
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query := `INSERT INTO upload_status (type, status) VALUES(?,?)`
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for k, v := range UploadStatus {
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_, err := DB.Sql.Exec(query, k, v)
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if err != nil {
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sqlErr, ok := err.(sqlite3.Error)
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if ok && sqlErr.ExtendedCode == sqlite3.ErrConstraintUnique {
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log.Panic(err)
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}
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if !ok {
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log.Panic(err)
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}
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}
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}
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}
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