package main import ( "bytes" "encoding/json" "io" "log" "time" "github.com/dirtbags/moth/pkg/transpile" "github.com/spf13/afero" ) // NewTranspilerProvider returns a new TranspilerProvider. func NewTranspilerProvider(fs afero.Fs) TranspilerProvider { return TranspilerProvider{fs} } // TranspilerProvider provides puzzles generated from source files on disk type TranspilerProvider struct { fs afero.Fs } // Inventory returns a Category list for this provider. func (p TranspilerProvider) Inventory() []Category { ret := make([]Category, 0) inv, err := transpile.FsInventory(p.fs) if err != nil { log.Print(err) return ret } for name, points := range inv { ret = append(ret, Category{name, points}) } return ret } type nopCloser struct { io.ReadSeeker } func (c nopCloser) Close() error { return nil } // Open returns a file associated with the given category and point value. func (p TranspilerProvider) Open(cat string, points int, filename string) (ReadSeekCloser, time.Time, error) { c := transpile.NewFsCategory(p.fs, cat) switch filename { case "", "puzzle.json": p, err := c.Puzzle(points) if err != nil { return nopCloser{new(bytes.Reader)}, time.Time{}, err } jp, err := json.Marshal(p) if err != nil { return nopCloser{new(bytes.Reader)}, time.Time{}, err } return nopCloser{bytes.NewReader(jp)}, time.Now(), nil default: r, err := c.Open(points, filename) return r, time.Now(), err } } // CheckAnswer checks whether an answer si correct. func (p TranspilerProvider) CheckAnswer(cat string, points int, answer string) (bool, error) { c := transpile.NewFsCategory(p.fs, cat) return c.Answer(points, answer), nil } // Maintain performs housekeeping. func (p TranspilerProvider) Maintain(updateInterval time.Duration) { // Nothing to do here. }