package fic

import (
)

type EHint struct {
	Id         int64  `json:"id"`
	IdExercice int64  `json:"idExercice"`
	Title      string `json:"title"`
	Content    string `json:"content"`
	Cost       int64  `json:"cost"`
}

func (e Exercice) GetHints() ([]EHint, error) {
	if rows, err := DBQuery("SELECT id_hint, title, content, cost FROM exercice_hints WHERE id_exercice = ?", e.Id); err != nil {
		return nil, err
	} else {
		defer rows.Close()

		var hints = make([]EHint, 0)
		for rows.Next() {
			var h EHint
			h.IdExercice = e.Id
			if err := rows.Scan(&h.Id, &h.Title, &h.Content, &h.Cost); err != nil {
				return nil, err
			}
			hints = append(hints, h)
		}
		if err := rows.Err(); err != nil {
			return nil, err
		}

		return hints, nil
	}
}

func (e Exercice) AddHint(title string, content string, cost int64) (EHint, error) {
	if res, err := DBExec("INSERT INTO exercice_hints (id_exercice, title, content, cost) VALUES (?, ?, ?, ?)", e.Id, title, content, cost); err != nil {
		return EHint{}, err
	} else if hid, err := res.LastInsertId(); err != nil {
		return EHint{}, err
	} else {
		return EHint{hid, e.Id, title, content, cost}, nil
	}
}

func (h EHint) Update() (int64, error) {
	if res, err := DBExec("UPDATE exercice_hints SET id_exercice = ?, title = ?, content = ?, cost = ? WHERE id_hint = ?", h.IdExercice, h.Title, h.Content, h.Cost, h.Id); err != nil {
		return 0, err
	} else if nb, err := res.RowsAffected(); err != nil {
		return 0, err
	} else {
		return nb, err
	}
}

func (h EHint) Delete() (int64, error) {
	if res, err := DBExec("DELETE FROM exercice_hints WHERE id_hint = ?", h.Id); err != nil {
		return 0, err
	} else if nb, err := res.RowsAffected(); err != nil {
		return 0, err
	} else {
		return nb, err
	}
}