zeit/z/database.go
2022-09-02 22:27:55 +02:00

318 lines
7 KiB
Go

package z
import (
"encoding/json"
"errors"
"log"
"os"
"sort"
"strings"
"github.com/google/uuid"
"github.com/tidwall/buntdb"
)
type Database struct {
DB *buntdb.DB
}
func InitDatabase() (*Database, error) {
dbfile, ok := os.LookupEnv("ZEIT_DB")
if ok == false || dbfile == "" {
return nil, errors.New("please `export ZEIT_DB` to the location the zeit database should be stored at")
}
db, err := buntdb.Open(dbfile)
if err != nil {
return nil, err
}
db.CreateIndex("task", "*", buntdb.IndexJSON("task"))
db.CreateIndex("project", "*", buntdb.IndexJSON("project"))
database := Database{db}
return &database, nil
}
func (database *Database) NewID() (string) {
id, err := uuid.NewRandom()
if err != nil {
log.Fatalln("could not generate UUID: %+v", err)
}
return id.String()
}
func (database *Database) AddEntry(user string, entry Entry, setRunning bool) (string, error) {
id := database.NewID()
entryJson, jsonerr := json.Marshal(entry)
if jsonerr != nil {
return id, jsonerr
}
dberr := database.DB.Update(func(tx *buntdb.Tx) error {
if setRunning == true {
_, _, seterr := tx.Set(user + ":status:running", id, nil)
if seterr != nil {
return seterr
}
}
_, _, seterr := tx.Set(user + ":entry:" + id, string(entryJson), nil)
if seterr != nil {
return seterr
}
return nil
})
return id, dberr
}
func (database *Database) GetEntry(user string, entryId string) (Entry, error) {
var entry Entry
dberr := database.DB.View(func(tx *buntdb.Tx) error {
value, err := tx.Get(user + ":entry:" + entryId)
if err != nil {
return err
}
json.Unmarshal([]byte(value), &entry)
entry.ID = entryId
return nil
})
return entry, dberr
}
func (database *Database) UpdateEntry(user string, entry Entry) (string, error) {
entryJson, jsonerr := json.Marshal(entry)
if jsonerr != nil {
return entry.ID, jsonerr
}
dberr := database.DB.Update(func(tx *buntdb.Tx) error {
_, _, seerr := tx.Set(user + ":entry:" + entry.ID, string(entryJson), nil)
if seerr != nil {
return seerr
}
return nil
})
return entry.ID, dberr
}
func (database *Database) FinishEntry(user string, entry Entry) (string, error) {
entryJson, jsonerr := json.Marshal(entry)
if jsonerr != nil {
return entry.ID, jsonerr
}
dberr := database.DB.Update(func(tx *buntdb.Tx) error {
runningEntryId, grerr := tx.Get(user + ":status:running")
if grerr != nil {
return errors.New("no currently running entry found!")
}
if runningEntryId != entry.ID {
return errors.New("specified entry is not currently running!")
}
_, _, srerr := tx.Set(user + ":status:running", "", nil)
if srerr != nil {
return srerr
}
_, _, seerr := tx.Set(user + ":entry:" + entry.ID, string(entryJson), nil)
if seerr != nil {
return seerr
}
return nil
})
return entry.ID, dberr
}
func (database *Database) EraseEntry(user string, id string) (error) {
runningEntryId, err := database.GetRunningEntryId(user)
if err != nil {
return err
}
dberr := database.DB.Update(func(tx *buntdb.Tx) error {
if runningEntryId == id {
_, _, seterr := tx.Set(user + ":status:running", "", nil)
if seterr != nil {
return seterr
}
}
_, delerr := tx.Delete(user + ":entry:" + id)
if delerr != nil {
return delerr
}
return nil
})
return dberr
}
func (database *Database) GetRunningEntryId(user string) (string, error) {
var runningId string = ""
dberr := database.DB.View(func(tx *buntdb.Tx) error {
value, err := tx.Get(user + ":status:running")
if err != nil {
return err
}
runningId = value
return nil
})
return runningId, dberr
}
func (database *Database) ListEntries(user string) ([]Entry, error) {
var entries []Entry
dberr := database.DB.View(func(tx *buntdb.Tx) error {
tx.AscendKeys(user + ":entry:*", func(key, value string) bool {
var entry Entry
json.Unmarshal([]byte(value), &entry)
entry.SetIDFromDatabaseKey(key)
entries = append(entries, entry)
return true
})
return nil
})
sort.Slice(entries, func(i, j int) bool { return entries[i].Begin.Before(entries[j].Begin) })
return entries, dberr
}
func (database *Database) GetImportsSHA1List(user string) (map[string]string, error) {
var sha1List = make(map[string]string)
dberr := database.DB.View(func(tx *buntdb.Tx) error {
value, err := tx.Get(user + ":imports:sha1", false)
if err != nil {
return nil
}
sha1Entries := strings.Split(value, ",")
for _, sha1Entry := range sha1Entries {
sha1EntrySplit := strings.Split(sha1Entry, ":")
sha1 := sha1EntrySplit[0]
id := sha1EntrySplit[1]
sha1List[sha1] = id
}
return nil
})
return sha1List, dberr
}
func (database *Database) UpdateImportsSHA1List(user string, sha1List map[string]string) (error) {
var sha1Entries []string
for sha1, id := range sha1List {
sha1Entries = append(sha1Entries, sha1 + ":" + id)
}
value := strings.Join(sha1Entries, ",")
dberr := database.DB.Update(func(tx *buntdb.Tx) error {
_, _, seterr := tx.Set(user + ":imports:sha1", value, nil)
if seterr != nil {
return seterr
}
return nil
})
return dberr
}
func (database *Database) UpdateProject(user string, projectName string, project Project) (error) {
projectJson, jsonerr := json.Marshal(project)
if jsonerr != nil {
return jsonerr
}
projectId := GetIdFromName(projectName)
dberr := database.DB.Update(func(tx *buntdb.Tx) error {
_, _, sperr := tx.Set(user + ":project:" + projectId, string(projectJson), nil)
if sperr != nil {
return sperr
}
return nil
})
return dberr
}
func (database *Database) GetProject(user string, projectName string) (Project, error) {
var project Project
projectId := GetIdFromName(projectName)
dberr := database.DB.View(func(tx *buntdb.Tx) error {
value, err := tx.Get(user + ":project:" + projectId, false)
if err != nil {
return nil
}
json.Unmarshal([]byte(value), &project)
return nil
})
return project, dberr
}
func (database *Database) UpdateTask(user string, taskName string, task Task) (error) {
taskJson, jsonerr := json.Marshal(task)
if jsonerr != nil {
return jsonerr
}
taskId := GetIdFromName(taskName)
dberr := database.DB.Update(func(tx *buntdb.Tx) error {
_, _, sperr := tx.Set(user + ":task:" + taskId, string(taskJson), nil)
if sperr != nil {
return sperr
}
return nil
})
return dberr
}
func (database *Database) GetTask(user string, taskName string) (Task, error) {
var task Task
taskId := GetIdFromName(taskName)
dberr := database.DB.View(func(tx *buntdb.Tx) error {
value, err := tx.Get(user + ":task:" + taskId, false)
if err != nil {
return nil
}
json.Unmarshal([]byte(value), &task)
return nil
})
return task, dberr
}