forms.gno

  1package forms
  2
  3import (
  4	"time"
  5
  6	"gno.land/p/nt/seqid"
  7)
  8
  9// FieldType examples :
 10// - string: "string";
 11// - number: "number";
 12// - boolean: "boolean";
 13// - choice: "['Pizza', 'Schnitzel', 'Burger']";
 14// - multi-choice: "{'Pizza', 'Schnitzel', 'Burger'}";
 15type Field struct {
 16	Label     string
 17	FieldType string
 18	Required  bool
 19}
 20
 21type Form struct {
 22	ID          string
 23	Owner       address
 24	Title       string
 25	Description string
 26	Fields      []Field
 27	CreatedAt   time.Time
 28	openAt      time.Time
 29	closeAt     time.Time
 30}
 31
 32// Answers example :
 33// - ["Alex", 21, true, 0, [0, 1]]
 34type Submission struct {
 35	FormID      string
 36	Author      address
 37	Answers     string // json
 38	SubmittedAt time.Time
 39}
 40
 41type FormDB struct {
 42	Forms     []*Form
 43	Answers   []*Submission
 44	IDCounter seqid.ID
 45}
 46
 47func NewDB() *FormDB {
 48	return &FormDB{
 49		Forms:   make([]*Form, 0),
 50		Answers: make([]*Submission, 0),
 51	}
 52}
 53
 54// This function checks if the form is open by verifying the given dates
 55// - If a form doesn't have any dates, it's considered open
 56// - If a form has only an open date, it's considered open if the open date is in the past
 57// - If a form has only a close date, it's considered open if the close date is in the future
 58// - If a form has both open and close dates, it's considered open if the current date is between the open and close dates
 59func (form *Form) IsOpen() bool {
 60	openAt, errOpen := form.OpenAt()
 61	closedAt, errClose := form.CloseAt()
 62
 63	noOpenDate := errOpen != nil
 64	noCloseDate := errClose != nil
 65
 66	if noOpenDate && noCloseDate {
 67		return true
 68	}
 69
 70	if noOpenDate && !noCloseDate {
 71		return time.Now().Before(closedAt)
 72	}
 73
 74	if !noOpenDate && noCloseDate {
 75		return time.Now().After(openAt)
 76	}
 77
 78	now := time.Now()
 79	return now.After(openAt) && now.Before(closedAt)
 80}
 81
 82// OpenAt returns the open date of the form if it exists
 83func (form *Form) OpenAt() (time.Time, error) {
 84	if form.openAt.IsZero() {
 85		return time.Time{}, errNoOpenDate
 86	}
 87
 88	return form.openAt, nil
 89}
 90
 91// CloseAt returns the close date of the form if it exists
 92func (form *Form) CloseAt() (time.Time, error) {
 93	if form.closeAt.IsZero() {
 94		return time.Time{}, errNoCloseDate
 95	}
 96
 97	return form.closeAt, nil
 98}
 99
100// GetForm returns a form by its ID if it exists
101func (db *FormDB) GetForm(id string) (*Form, error) {
102	for _, form := range db.Forms {
103		if form.ID == id {
104			return form, nil
105		}
106	}
107	return nil, errFormNotFound
108}
109
110// GetAnswer returns an answer by its form - and author ids if it exists
111func (db *FormDB) GetAnswer(formID string, author address) (*Submission, error) {
112	for _, answer := range db.Answers {
113		if answer.FormID == formID && answer.Author.String() == author.String() {
114			return answer, nil
115		}
116	}
117	return nil, errAnswerNotFound
118}
119
120// GetSubmissionsByFormID returns a list containing the existing form submissions by the form ID
121func (db *FormDB) GetSubmissionsByFormID(formID string) []*Submission {
122	submissions := make([]*Submission, 0)
123
124	for _, answer := range db.Answers {
125		if answer.FormID == formID {
126			submissions = append(submissions, answer)
127		}
128	}
129
130	return submissions
131}