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|
package dbx
import (
"fmt"
"io/fs"
"log"
"sort"
"git.thomasvoss.com/euro-cash.eu/pkg/atexit"
. "git.thomasvoss.com/euro-cash.eu/pkg/try"
"github.com/jmoiron/sqlx"
"github.com/mattn/go-sqlite3"
)
var (
db *sqlx.DB
DBName string
)
func Init(sqlDir fs.FS) {
db = sqlx.MustConnect("sqlite3", DBName)
atexit.Register(Close)
Try(applyMigrations(sqlDir))
/* TODO: Remove debug code */
/* Try(CreateUser(User{
Email: "mail@thomasvoss.com",
Username: "Thomas",
Password: "69",
AdminP: true,
}))
Try(CreateUser(User{
Email: "foo@BAR.baz",
Username: "Foobar",
Password: "420",
AdminP: false,
}))
Try2(GetMintages("ad", TypeCirc)) */
}
func Close() {
db.Close()
}
func applyMigrations(dir fs.FS) error {
var latest int
migratedp := true
err := db.QueryRow("SELECT latest FROM migration").Scan(&latest)
if err != nil {
e, ok := err.(sqlite3.Error)
/* IDK if there is a better way to do this… lol */
if ok && e.Error() == "no such table: migration" {
migratedp = false
} else {
return err
}
}
if !migratedp {
latest = -1
}
files, err := fs.ReadDir(dir, ".")
if err != nil {
return err
}
var (
last string
scripts []string
)
for _, f := range files {
if n := f.Name(); n == "last.sql" {
last = n
} else {
scripts = append(scripts, f.Name())
}
}
sort.Strings(scripts)
for _, f := range scripts[latest+1:] {
qry, err := fs.ReadFile(dir, f)
if err != nil {
return err
}
tx, err := db.Begin()
if err != nil {
return err
}
var n int
if _, err = fmt.Sscanf(f, "%d", &n); err != nil {
goto error
}
if _, err = tx.Exec(string(qry)); err != nil {
err = fmt.Errorf("error in ‘%s’: %w", f, err)
goto error
}
_, err = tx.Exec("UPDATE migration SET latest = ? WHERE id = 1", n)
if err != nil {
goto error
}
if err = tx.Commit(); err != nil {
goto error
}
log.Printf("Applied database migration ‘%s’\n", f)
continue
error:
tx.Rollback()
return err
}
if last != "" {
qry, err := fs.ReadFile(dir, last)
if err != nil {
return err
}
if _, err := db.Exec(string(qry)); err != nil {
return fmt.Errorf("error in ‘%s’: %w", last, err)
}
log.Printf("Ran ‘%s’\n", last)
}
return nil
}
|
