package fic

import ()

type Theme struct {
	Id      int64  `json:"id"`
	Name    string `json:"name"`
	Authors string `json:"authors,omitempty"`
	Intro   string `json:"intro,omitempty"`
}

func GetThemes() ([]Theme, error) {
	if rows, err := DBQuery("SELECT id_theme, name, authors, intro FROM themes"); err != nil {
		return nil, err
	} else {
		defer rows.Close()

		var themes = make([]Theme, 0)
		for rows.Next() {
			var t Theme
			if err := rows.Scan(&t.Id, &t.Name, &t.Authors, &t.Intro); err != nil {
				return nil, err
			}
			themes = append(themes, t)
		}
		if err := rows.Err(); err != nil {
			return nil, err
		}

		return themes, nil
	}
}

func GetTheme(id int) (Theme, error) {
	var t Theme
	if err := DBQueryRow("SELECT id_theme, name, authors, intro FROM themes WHERE id_theme=?", id).Scan(&t.Id, &t.Name, &t.Authors, &t.Intro); err != nil {
		return t, err
	}

	return t, nil
}

func GetThemeByName(name string) (Theme, error) {
	var t Theme
	if err := DBQueryRow("SELECT id_theme, name, authors, intro FROM themes WHERE name=?", name).Scan(&t.Id, &t.Name, &t.Authors, &t.Intro); err != nil {
		return t, err
	}

	return t, nil
}

func CreateTheme(name string, authors string, intro string) (Theme, error) {
	if res, err := DBExec("INSERT INTO themes (name, authors, intro) VALUES (?, ?, ?)", name, authors, intro); err != nil {
		return Theme{}, err
	} else if tid, err := res.LastInsertId(); err != nil {
		return Theme{}, err
	} else {
		return Theme{tid, name, authors, intro}, nil
	}
}

func (t Theme) Update() (int64, error) {
	if res, err := DBExec("UPDATE themes SET name = ?, authors = ?, intro = ? WHERE id_theme = ?", t.Name, t.Authors, t.Intro, t.Id); err != nil {
		return 0, err
	} else if nb, err := res.RowsAffected(); err != nil {
		return 0, err
	} else {
		return nb, err
	}
}

func (t Theme) Delete() (int64, error) {
	if res, err := DBExec("DELETE FROM themes WHERE id_theme = ?", t.Id); err != nil {
		return 0, err
	} else if nb, err := res.RowsAffected(); err != nil {
		return 0, err
	} else {
		return nb, err
	}
}