348 lines
10 KiB
Go
348 lines
10 KiB
Go
package fic
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import (
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"errors"
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"fmt"
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"time"
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)
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// MCQ represents a flag's challenge, in the form of checkbox.
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type MCQ struct {
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Id int `json:"id"`
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// IdExercice is the identifier of the underlying challenge
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IdExercice int64 `json:"idExercice"`
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// Order is used to sort the flag between them
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Order int8 `json:"order"`
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// Title is the label of the question
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Title string `json:"title"`
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// Entries stores the set of proposed answers
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Entries []*MCQ_entry `json:"entries"`
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}
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// MCQ_entry represents a proposed response for a given MCQ.
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type MCQ_entry struct {
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Id int `json:"id"`
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// Label is the text displayed to players as proposed answer
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Label string `json:"label"`
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// Response stores if expected checked state.
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Response bool `json:"response"`
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}
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// GetMCQ returns a list of flags comming with the challenge.
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func GetMCQ(id int) (m *MCQ, err error) {
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m = &MCQ{}
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err = DBQueryRow("SELECT id_mcq, id_exercice, ordre, title FROM exercice_mcq WHERE id_mcq = ?", id).Scan(&m.Id, &m.IdExercice, &m.Order, &m.Title)
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m.fillEntries()
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return
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}
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func (m *MCQ) fillEntries() ([]*MCQ_entry, error) {
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if entries_rows, err := DBQuery("SELECT id_mcq_entry, label, response FROM mcq_entries WHERE id_mcq = ?", m.Id); err != nil {
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return nil, err
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} else {
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defer entries_rows.Close()
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for entries_rows.Next() {
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e := &MCQ_entry{}
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if err := entries_rows.Scan(&e.Id, &e.Label, &e.Response); err != nil {
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return nil, err
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}
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m.Entries = append(m.Entries, e)
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}
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}
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return m.Entries, nil
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}
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// GetMCQ returns the MCQs coming with the challenge.
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func (e *Exercice) GetMCQ() ([]*MCQ, error) {
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if rows, err := DBQuery("SELECT id_mcq, id_exercice, ordre, title FROM exercice_mcq WHERE id_exercice = ?", e.Id); err != nil {
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return nil, err
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} else {
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defer rows.Close()
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var mcqs = []*MCQ{}
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for rows.Next() {
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m := &MCQ{}
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m.IdExercice = e.Id
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if err := rows.Scan(&m.Id, &m.IdExercice, &m.Order, &m.Title); err != nil {
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return nil, err
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}
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m.fillEntries()
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mcqs = append(mcqs, m)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return mcqs, nil
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}
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}
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// GetMCQById returns a MCQs.
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func (e *Exercice) GetMCQById(id int) (m *MCQ, err error) {
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m = &MCQ{}
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err = DBQueryRow("SELECT id_mcq, id_exercice, ordre, title FROM exercice_mcq WHERE id_mcq = ? AND id_exercice = ?", id, e.Id).Scan(&m.Id, &m.IdExercice, &m.Order, &m.Title)
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m.fillEntries()
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return
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}
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// GetMCQbyChoice returns the MCQ corresponding to a choice ID.
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func GetMCQbyChoice(cid int) (m *MCQ, c *MCQ_entry, err error) {
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m = &MCQ{}
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if errr := DBQueryRow("SELECT id_mcq, id_exercice, ordre, title FROM exercice_mcq WHERE id_mcq = (SELECT id_mcq FROM mcq_entries WHERE id_mcq_entry = ?)", cid).Scan(&m.Id, &m.IdExercice, &m.Order, &m.Title); errr != nil {
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return nil, nil, errr
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}
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if entries_rows, errr := DBQuery("SELECT id_mcq_entry, label, response FROM mcq_entries WHERE id_mcq = ?", m.Id); errr != nil {
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return nil, nil, errr
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} else {
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defer entries_rows.Close()
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for entries_rows.Next() {
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e := &MCQ_entry{}
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if err = entries_rows.Scan(&e.Id, &e.Label, &e.Response); err != nil {
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return
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}
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if e.Id == cid {
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c = e
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}
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m.Entries = append(m.Entries, e)
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}
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}
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return
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}
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// GetId returns the MCQ identifier.
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func (m *MCQ) GetId() int {
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return m.Id
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}
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// RecoverId returns the MCQ identifier as register in DB.
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func (m *MCQ) RecoverId() (Flag, error) {
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if err := DBQueryRow("SELECT id_mcq FROM exercice_mcq WHERE title LIKE ? AND id_exercice = ?", m.Title, m.IdExercice).Scan(&m.Id); err != nil {
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return nil, err
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} else {
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return m, err
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}
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}
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// Create registers a MCQ into the database and recursively add its entries.
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func (m *MCQ) Create(e *Exercice) (Flag, error) {
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if res, err := DBExec("INSERT INTO exercice_mcq (id_exercice, ordre, title) VALUES (?, ?, ?)", e.Id, m.Order, m.Title); err != nil {
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return m, err
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} else if qid, err := res.LastInsertId(); err != nil {
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return m, err
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} else {
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m.Id = int(qid)
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m.IdExercice = e.Id
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// Add entries
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for k, entry := range m.Entries {
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if entry, err = m.AddEntry(entry); err != nil {
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return m, err
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} else {
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m.Entries[k] = entry
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}
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}
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return m, nil
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}
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}
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// Update applies modifications back to the database.
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func (m *MCQ) Update() (int64, error) {
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if res, err := DBExec("UPDATE exercice_mcq SET id_exercice = ?, ordre = ?, title = ? WHERE id_mcq = ?", m.IdExercice, m.Order, m.Title, m.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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// Delete the MCQ from the database.
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func (m *MCQ) Delete() (int64, error) {
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if _, err := DBExec("DELETE FROM exercice_files_omcq_deps WHERE id_mcq = ?", m.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM exercice_mcq_okey_deps WHERE id_mcq = ?", m.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM exercice_mcq_omcq_deps WHERE id_mcq = ?", m.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM exercice_mcq_omcq_deps WHERE id_mcq_dep = ?", m.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM exercice_flags_omcq_deps WHERE id_mcq_dep = ?", m.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM exercice_hints_omcq_deps WHERE id_mcq_dep = ?", m.Id); err != nil {
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return 0, err
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} else if res, err := DBExec("DELETE FROM exercice_mcq WHERE id_mcq = ?", m.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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// AddEntry creates and fills a new struct MCQ_entry and registers it into the database.
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func (m *MCQ) AddEntry(e *MCQ_entry) (*MCQ_entry, error) {
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if res, err := DBExec("INSERT INTO mcq_entries (id_mcq, label, response) VALUES (?, ?, ?)", m.Id, e.Label, e.Response); err != nil {
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return e, err
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} else if nid, err := res.LastInsertId(); err != nil {
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return e, err
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} else {
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e.Id = int(nid)
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return e, nil
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}
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}
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// Update applies modifications back to the database.
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func (n *MCQ_entry) Update() (int64, error) {
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if res, err := DBExec("UPDATE mcq_entries SET label = ?, response = ? WHERE id_mcq = ?", n.Label, n.Response, n.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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// Delete the MCQ entry from the database.
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func (n *MCQ_entry) Delete() (int64, error) {
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if res, err := DBExec("DELETE FROM mcq_entries WHERE id_mcq_entry = ?", n.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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// WipeMCQs deletes MCQs coming with the challenge.
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func (e *Exercice) WipeMCQs() (int64, error) {
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if _, err := DBExec("DELETE FROM exercice_files_omcq_deps WHERE id_mcq IN (SELECT id_mcq FROM exercice_mcq WHERE id_exercice = ?)", e.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM mcq_entries WHERE id_mcq IN (SELECT id_mcq FROM exercice_mcq WHERE id_exercice = ?);", e.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM exercice_flags_omcq_deps WHERE id_mcq_dep IN (SELECT id_mcq FROM exercice_mcq WHERE id_exercice = ?);", e.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM exercice_mcq_okey_deps WHERE id_mcq IN (SELECT id_mcq FROM exercice_mcq WHERE id_exercice = ?);", e.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM exercice_mcq_omcq_deps WHERE id_mcq IN (SELECT id_mcq FROM exercice_mcq WHERE id_exercice = ?);", e.Id); err != nil {
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return 0, err
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} else if _, err := DBExec("DELETE FROM exercice_mcq_omcq_deps WHERE id_mcq_dep IN (SELECT id_mcq FROM exercice_mcq WHERE id_exercice = ?);", e.Id); err != nil {
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return 0, err
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} else if res, err := DBExec("DELETE FROM exercice_mcq WHERE id_exercice = ?;", e.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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func (m *MCQ) GetOrder() int8 {
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return m.Order
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}
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// AddDepend insert a new dependency to a given flag.
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func (m *MCQ) AddDepend(j Flag) (err error) {
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if d, ok := j.(*FlagKey); ok {
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_, err = DBExec("INSERT INTO exercice_mcq_okey_deps (id_mcq, id_flag_dep) VALUES (?, ?)", m.Id, d.Id)
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} else if d, ok := j.(*MCQ); ok {
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_, err = DBExec("INSERT INTO exercice_mcq_omcq_deps (id_mcq, id_mcq_dep) VALUES (?, ?)", m.Id, d.Id)
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} else {
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err = errors.New("dependancy type not implemented for this flag")
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}
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return
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}
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// GetDepends retrieve the flag's dependency list.
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func (m *MCQ) GetDepends() ([]Flag, error) {
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deps := []Flag{}
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if rows, err := DBQuery("SELECT id_flag_dep FROM exercice_mcq_okey_deps WHERE id_mcq = ?", m.Id); err != nil {
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return nil, err
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} else {
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defer rows.Close()
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for rows.Next() {
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var d int
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if err := rows.Scan(&d); err != nil {
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return nil, err
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}
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deps = append(deps, &FlagKey{Id: d, IdExercice: m.IdExercice})
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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}
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if rows, err := DBQuery("SELECT id_mcq_dep FROM exercice_mcq_omcq_deps WHERE id_mcq = ?", m.Id); err != nil {
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return nil, err
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} else {
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defer rows.Close()
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for rows.Next() {
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var d int
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if err := rows.Scan(&d); err != nil {
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return nil, err
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}
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deps = append(deps, &MCQ{Id: d, IdExercice: m.IdExercice})
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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}
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return deps, nil
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}
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// GetJustifiedFlag searchs for a flag in the scope of the given exercice.
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func (c *MCQ_entry) GetJustifiedFlag(e *Exercice) (*FlagKey, error) {
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return e.GetFlagKeyByLabel(fmt.Sprintf("\\%%%d\\%%%%", c.Id))
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}
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// IsOptionnal to know if the flag can be omitted when validating the step.
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func (m *MCQ) IsOptionnal() bool {
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return false
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}
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// Check if the given vals are the expected ones to validate this flag.
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func (m *MCQ) Check(v interface{}) int {
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var vals map[int]bool
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if va, ok := v.(map[int]bool); !ok {
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return -1
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} else {
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vals = va
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}
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diff := 0
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for _, n := range m.Entries {
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if v, ok := vals[n.Id]; (ok || !n.Response) && v == n.Response {
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continue
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}
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diff += 1
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}
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return diff
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}
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// FoundBy registers in the database that the given Team solved the MCQ.
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func (m *MCQ) FoundBy(t *Team) (err error) {
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_, err = DBExec("INSERT INTO mcq_found (id_mcq, id_team, time) VALUES (?, ?, ?)", m.Id, t.Id, time.Now())
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return
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}
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