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user_data.go
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user_data.go
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package sqlite
import (
"context"
"database/sql"
"errors"
"fmt"
"sort"
"strings"
"github.com/imagvfx/forge"
)
func createUserDataTable(tx *sql.Tx) error {
_, err := tx.Exec(`
CREATE TABLE IF NOT EXISTS user_data (
id INTEGER PRIMARY KEY,
user_id INTERGER NOT NULL,
section STRING NOT NULL,
key STRING NOT NULL,
value STRING NOT NULL,
FOREIGN KEY (user_id) REFERENCES accessors (id)
UNIQUE (user_id, section, key)
)
`)
if err != nil {
return err
}
_, err = tx.Exec(`CREATE INDEX IF NOT EXISTS index_user_data_user_id_section ON user_data (user_id, section)`)
return err
}
func FindUserData(db *sql.DB, ctx context.Context, find forge.UserDataFinder) ([]*forge.UserDataSection, error) {
ctxUser := forge.UserNameFromContext(ctx)
if ctxUser == "" {
return nil, forge.Unauthorized("context user unspecified")
}
if ctxUser != find.User {
return nil, forge.Unauthorized("cannot get another user's data")
}
tx, err := db.BeginTx(ctx, nil)
if err != nil {
return nil, err
}
defer tx.Rollback()
data, err := findUserData(tx, ctx, find)
if err != nil {
return nil, err
}
err = tx.Commit()
if err != nil {
return nil, err
}
return data, nil
}
func findUserData(tx *sql.Tx, ctx context.Context, find forge.UserDataFinder) ([]*forge.UserDataSection, error) {
keys := make([]string, 0)
vals := make([]any, 0)
keys = append(keys, "accessors.name=?")
vals = append(vals, find.User)
if find.Section != nil {
keys = append(keys, "user_data.section=?")
vals = append(vals, *find.Section)
}
if find.Key != nil {
keys = append(keys, "user_data.key=?")
vals = append(vals, *find.Key)
}
where := ""
if len(keys) != 0 {
where = "WHERE " + strings.Join(keys, " AND ")
}
rows, err := tx.QueryContext(ctx, `
SELECT
user_data.section,
user_data.key,
user_data.value
FROM user_data
LEFT JOIN accessors ON user_data.user_id = accessors.id
`+where,
vals...,
)
if err != nil {
return nil, err
}
defer rows.Close()
secs := make(map[string]*forge.UserDataSection)
for rows.Next() {
var section, key, value string
err := rows.Scan(
§ion,
&key,
&value,
)
if err != nil {
return nil, err
}
if secs[section] == nil {
secs[section] = &forge.UserDataSection{
Section: section,
Data: make(map[string]string),
}
}
if key != "" {
secs[section].Data[key] = value
}
}
data := make([]*forge.UserDataSection, 0)
for _, s := range secs {
data = append(data, s)
}
sort.Slice(data, func(i, j int) bool {
return data[i].Section < data[j].Section
})
return data, nil
}
func AddUserDataSection(db *sql.DB, ctx context.Context, user, section string) error {
ctxUser := forge.UserNameFromContext(ctx)
if ctxUser == "" {
return forge.Unauthorized("context user unspecified")
}
if ctxUser != user {
return forge.Unauthorized("cannot get another user's data")
}
tx, err := db.BeginTx(ctx, nil)
if err != nil {
return err
}
defer tx.Rollback()
err = addUserDataSection(tx, ctx, user, section)
if err != nil {
return err
}
err = tx.Commit()
if err != nil {
return err
}
return nil
}
func addUserDataSection(tx *sql.Tx, ctx context.Context, user, section string) error {
if section == "" {
return fmt.Errorf("user data section cannot be empty")
}
userID, err := getUserID(tx, ctx, user)
if err != nil {
return err
}
_, err = getUserDataSection(tx, ctx, user, section)
if err == nil {
return fmt.Errorf("user data section is already exists")
}
_, err = tx.ExecContext(ctx, `
INSERT INTO user_data (
user_id,
section,
key,
value
)
VALUES (?, ?, '', '')
`,
userID, section,
)
if err != nil {
return err
}
return nil
}
func GetUserDataSection(db *sql.DB, ctx context.Context, user, section string) (*forge.UserDataSection, error) {
ctxUser := forge.UserNameFromContext(ctx)
if ctxUser == "" {
return nil, forge.Unauthorized("context user unspecified")
}
if ctxUser != user {
return nil, forge.Unauthorized("cannot get another user's data")
}
tx, err := db.BeginTx(ctx, nil)
if err != nil {
return nil, err
}
defer tx.Rollback()
sec, err := getUserDataSection(tx, ctx, user, section)
if err != nil {
return nil, err
}
err = tx.Commit()
if err != nil {
return nil, err
}
return sec, nil
}
func getUserDataSection(tx *sql.Tx, ctx context.Context, user, section string) (*forge.UserDataSection, error) {
data, err := findUserData(tx, ctx, forge.UserDataFinder{User: user, Section: §ion})
if err != nil {
return nil, err
}
if len(data) == 0 {
return nil, forge.NotFound("user data section is not exists: %v", section)
}
sec := data[0]
if sec.Section != section {
return nil, fmt.Errorf("got wrong user data section: want %v, got %v", section, sec.Section)
}
return sec, nil
}
// GetUserData returns a user data from the sql file.
// NOTE: It doesn't raise error even if the key (even the section) doesn't exists in user_data table.
// It returns an empty string, instead.
func GetUserData(db *sql.DB, ctx context.Context, user, section, key string) (string, error) {
ctxUser := forge.UserNameFromContext(ctx)
if ctxUser == "" {
return "", forge.Unauthorized("context user unspecified")
}
if ctxUser != user {
return "", forge.Unauthorized("cannot get another user's data")
}
tx, err := db.BeginTx(ctx, nil)
if err != nil {
return "", err
}
defer tx.Rollback()
value, err := getUserData(tx, ctx, user, section, key)
err = tx.Commit()
if err != nil {
return "", err
}
return value, nil
}
func getUserData(tx *sql.Tx, ctx context.Context, user, section, key string) (string, error) {
if key == "" {
return "", fmt.Errorf("user data key cannot be empty")
}
data, err := findUserData(tx, ctx, forge.UserDataFinder{User: user, Section: §ion, Key: &key})
if err != nil {
return "", err
}
if len(data) == 0 {
return "", nil
}
sec := data[0]
if sec.Section != section {
return "", fmt.Errorf("got wrong section of user_data: want %v, got %v", section, sec.Section)
}
value, ok := sec.Data[key]
if !ok {
return "", forge.NotFound("user data is not exists: %v/%v", section, key)
}
return value, nil
}
// SetUserData sets a user data to the sql file.
// It adds if the user data is not exists.
// It will update the value instead, if the user data is already exists.
func SetUserData(db *sql.DB, ctx context.Context, user, section, key, value string) error {
ctxUser := forge.UserNameFromContext(ctx)
if ctxUser == "" {
return forge.Unauthorized("context user unspecified")
}
if ctxUser != user {
return forge.Unauthorized("cannot set user-data to another user")
}
tx, err := db.BeginTx(ctx, nil)
if err != nil {
return err
}
defer tx.Rollback()
err = setUserData(tx, ctx, user, section, key, value)
if err != nil {
return err
}
err = tx.Commit()
if err != nil {
return err
}
return nil
}
func setUserData(tx *sql.Tx, ctx context.Context, user, section, key, value string) error {
if section == "" {
return fmt.Errorf("user data section cannot be empty")
}
if key == "" {
return fmt.Errorf("user data key cannot be empty")
}
userID, err := getUserID(tx, ctx, user)
if err != nil {
return err
}
_, err = tx.ExecContext(ctx, `
INSERT INTO user_data (
user_id,
section,
key,
value
)
VALUES (?, ?, ?, ?)
ON CONFLICT (user_id, section, key) DO
UPDATE SET value=?
`,
userID, section, key, value, value,
)
if err != nil {
return err
}
return nil
}
// DeleteUserData deletes a user data from the sql file.
// NOTE: It will not return an error even the user data wasn't existed.
// The user should check it explicitly, if needed.
func DeleteUserData(db *sql.DB, ctx context.Context, user, section, key string) error {
ctxUser := forge.UserNameFromContext(ctx)
if ctxUser == "" {
return forge.Unauthorized("context user unspecified")
}
if ctxUser != user {
return forge.Unauthorized("cannot delete another user's data")
}
tx, err := db.BeginTx(ctx, nil)
if err != nil {
return err
}
defer tx.Rollback()
err = deleteUserData(tx, ctx, user, section, key)
if err != nil {
return err
}
err = tx.Commit()
if err != nil {
return err
}
return nil
}
func deleteUserData(tx *sql.Tx, ctx context.Context, user, section, key string) error {
if key == "" {
return fmt.Errorf("user data key cannot be empty")
}
userID, err := getUserID(tx, ctx, user)
if err != nil {
return err
}
_, err = tx.ExecContext(ctx, `
DELETE FROM user_data
WHERE user_id=? AND section=? AND key=?
`,
userID, section, key,
)
if err != nil {
return err
}
return nil
}
func DeleteUserDataSection(db *sql.DB, ctx context.Context, user, section string) error {
ctxUser := forge.UserNameFromContext(ctx)
if ctxUser == "" {
return forge.Unauthorized("context user unspecified")
}
if ctxUser != user {
return forge.Unauthorized("cannot delete another user's data")
}
tx, err := db.BeginTx(ctx, nil)
if err != nil {
return err
}
defer tx.Rollback()
err = deleteUserDataSection(tx, ctx, user, section)
if err != nil {
return err
}
err = tx.Commit()
if err != nil {
return err
}
return nil
}
func deleteUserDataSection(tx *sql.Tx, ctx context.Context, user, section string) error {
userID, err := getUserID(tx, ctx, user)
if err != nil {
return err
}
_, err = getUserDataSection(tx, ctx, user, section)
if err != nil {
var e *forge.NotFoundError
if !errors.As(err, &e) {
return fmt.Errorf("user data section is not exists")
}
}
_, err = tx.ExecContext(ctx, `
DELETE FROM user_data
WHERE user_id=? AND section=?
`,
userID, section,
)
if err != nil {
return err
}
return nil
}