"""Rendu des emails. Les textes vivent dans `locales/fr.json` (`email.*`)."""

from app.i18n import t

# Variables autorisées dans un modèle d'email de planning saisi par la
# coordination.
_PLANNING_PLACEHOLDERS = (
    "prenom",
    "nom",
    "nb_creneaux",
    "nb_heures",
    "creneaux",
    "lien_connexion",
)


def render_magic_link(*, link: str, minutes: int) -> tuple[str, str]:
    return (
        t("email.magic_link.subject"),
        t("email.magic_link.body", link=link, minutes=minutes),
    )


def _fill(template: str, values: dict[str, object]) -> str:
    out = template
    for key in _PLANNING_PLACEHOLDERS:
        out = out.replace("{" + key + "}", str(values.get(key, "")))
    return out


def render_planning(
    *,
    subject_template: str,
    body_template: str,
    first_name: str,
    last_name: str,
    shift_count: int,
    hours: float,
    shifts_text: str,
    login_link: str,
) -> tuple[str, str]:
    values: dict[str, object] = {
        "prenom": first_name,
        "nom": last_name,
        "nb_creneaux": shift_count,
        "nb_heures": hours,
        "creneaux": shifts_text,
        "lien_connexion": login_link,
    }
    return _fill(subject_template, values), _fill(body_template, values)