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154 lines
3.3 KiB
Go
154 lines
3.3 KiB
Go
package storia
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import (
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"bytes"
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"math"
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"os"
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"sort"
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"strconv"
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"strings"
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"git.phc.dm.unipi.it/phc/website/articles"
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"git.phc.dm.unipi.it/phc/website/util"
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"gopkg.in/yaml.v3"
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)
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type StoriaService interface {
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GetStoria() ([]*GenericEvent, error)
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}
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type GenericEvent struct {
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// Campi principali
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Type string `yaml:"type"`
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Date string `yaml:"date"`
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// Altri campi utilizzati ogni tanto
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Title string `yaml:"title"`
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Description string `yaml:"description"`
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// Se il tipo di evento è riferito ad un utente usiamo anche questo campo apposta
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Uid string `yaml:"uid"`
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FullName string `yaml:"fullName"`
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// Se il tipo è "spacer" questa è la sua dimensione
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Size int `yaml:"size"`
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// Icona opzionale per il tipo "simple"
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Icon string `yaml:"icon"`
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}
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type Macchinista struct {
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Uid string `yaml:"uid"`
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FullName string `yaml:"fullName"`
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EntryDate string `yaml:"entryDate"`
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ExitDate string `yaml:"exitDate"`
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}
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type storiaDB struct {
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Macchinisti []*Macchinista `yaml:"macchinisti"`
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GenericEvent []*GenericEvent `yaml:"eventi"`
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}
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type JsonFileStoria struct {
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Path string
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}
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type byEventDateDescending []*GenericEvent
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func (m byEventDateDescending) Len() int {
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return len(m)
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}
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func (m byEventDateDescending) Swap(i, j int) {
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m[i], m[j] = m[j], m[i]
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}
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func (m byEventDateDescending) Less(i, j int) bool {
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return m[i].Date > m[j].Date
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}
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func (db *JsonFileStoria) GetStoria() ([]*GenericEvent, error) {
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history, err := db.GetRawStoria()
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if err != nil {
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return nil, err
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}
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events := history.GenericEvent[:]
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for _, m := range history.Macchinisti {
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if m.ExitDate != "" {
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events = append(events, &GenericEvent{
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Type: "exit-macchinista",
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Uid: m.Uid,
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FullName: m.FullName,
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Date: m.ExitDate,
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})
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}
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if m.EntryDate != "" {
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events = append(events, &GenericEvent{
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Type: "entry-macchinista",
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Uid: m.Uid,
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FullName: m.FullName,
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Date: m.EntryDate,
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})
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}
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}
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sort.Sort(byEventDateDescending(events))
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// render descriptions to markdown
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for _, event := range events {
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var buf bytes.Buffer
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if err := articles.Markdown.Convert([]byte(event.Description), &buf); err != nil {
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return nil, err
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}
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event.Description = buf.String()
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}
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return withSpacers(events), nil
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}
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func (db *JsonFileStoria) GetRawStoria() (*storiaDB, error) {
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var rawHistory storiaDB
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f, err := os.Open(db.Path)
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if err != nil {
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return nil, err
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}
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if err := yaml.NewDecoder(f).Decode(&rawHistory); err != nil {
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return nil, err
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}
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return &rawHistory, nil
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}
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func withSpacers(events []*GenericEvent) []*GenericEvent {
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// crea un nuovo slice con capacità già almeno "len(events)"
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newEvents := make([]*GenericEvent, 0, len(events))
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for i := 0; i < len(events)-1; i++ {
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newEvents = append(newEvents, events[i])
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delta := util.Abs(getDateYear(events[i+1].Date) - getDateYear(events[i].Date))
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if delta > 1 {
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logDelta := int(math.Log(float64(delta)))
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newEvents = append(newEvents, &GenericEvent{
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Type: "spacer",
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Size: logDelta,
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})
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}
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}
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newEvents = append(newEvents, events[len(events)-1])
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return newEvents
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}
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func getDateYear(date string) int {
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year, err := strconv.Atoi(strings.Split(date, "/")[0])
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if err != nil {
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panic(err) // Tanto nel caso si nota in fase di sviluppo visto che "_content/storia.yaml" è statico
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}
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return year
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}
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