"""Shell (ammunition) types and their known properties.

From High Command's field reference. Blast radius is None where unknown.
Feeds into the firing-solution calculator later (ordnance choice affects
what's needed to make a shot count, e.g. AP required for underground
supply caches per the typewriter).
"""

from __future__ import annotations

from enum import Enum


class Shell(Enum):
    #     description                                                 blast_radius_km  standard
    AP    = ("Armor-piercing",                                        0.05,            True)
    LE    = ("Light explosive",                                       0.05,            True)  # same blast radius as AP
    HE    = ("High-explosive fragmentation",                          0.25,            True)
    APHE  = ("Armor-piercing high-explosive",                         0.25,            True)  # same blast radius as HE
    HCHE  = ("High-capacity bursting charge",                         0.50,            True)
    EQKE  = ("Earthquake charge",                                     0.50,            True)  # same blast radius as HCHE
    FLCH  = ("Flechette",                                             0.60,            True)
    STAR  = ("Illumination star",                                     None,            True)
    SMK   = ("White phosphorus smoke",                                None,            True)
    MSTD  = ("Mustard (YX) blister agent",                            None,            False)
    TEAR  = ("Lachrymatory (CN) irritant",                            None,            False)
    PRPG  = ("Agitation leaflet propaganda",                          None,            False)
    PHGN  = ("Phosgene (CG) choking gas",                             None,            False)
    INCN  = ("Thermite incendiary",                                   None,            False)
    ATMC  = ("Experimental uranium nucleus-splitting annihilation",   None,            False)
    CLMN  = ("Cluster mine dispersal",                                None,            False)

    def __init__(self, description: str, blast_radius_km: float | None, standard: bool) -> None:
        self.description = description
        self.blast_radius_km = blast_radius_km  # None = not yet measured
        self.standard = standard  # available without a special unlock/research