#!/usr/bin/env python3
"""
FusionCore: Fusion and inventory management.
Item A + Item B = Item C. O(1) lookup. No crafting tree.

No dependencies. Pure Python.
"""
import time

# === THE LATTICE: fusion rules ===
FUSIONS = {
    # Element fusions
    ("fire", "earth"): {"result": "lava", "type": "element", "power": 30},
    ("fire", "water"): {"result": "steam", "type": "element", "power": 10},
    ("fire", "air"): {"result": "smoke", "type": "element", "power": 5},
    ("water", "earth"): {"result": "mud", "type": "element", "power": 5},
    ("water", "air"): {"result": "cloud", "type": "element", "power": 15},
    ("earth", "air"): {"result": "sandstorm", "type": "element", "power": 25},
    ("fire", "ice"): {"result": "water", "type": "element", "power": 5},
    ("lightning", "water"): {"result": "electrolyzed_water", "type": "explosion", "power": 80},
    ("lightning", "metal"): {"result": "magnetized_metal", "type": "element", "power": 40},
    ("lightning", "earth"): {"result": "shocked_ground", "type": "element", "power": 35},

    # Tier 1 -> Tier 2 (same element, double)
    ("fire_fire", "fire_fire"): {"result": "inferno", "type": "mega", "power": 100},
    ("ice_ice", "ice_ice"): {"result": "glacier", "type": "mega", "power": 100},
    ("lightning_lightning", "lightning_lightning"): {"result": "thunderstorm", "type": "mega", "power": 100},
    ("earth_earth", "earth_earth"): {"result": "mountain", "type": "mega", "power": 100},
    ("water_water", "water_water"): {"result": "ocean", "type": "mega", "power": 100},
    ("air_air", "air_air"): {"result": "tornado", "type": "mega", "power": 100},

    # Tier 2 -> Tier 3 (mega + element)
    ("inferno", "fire_fire"): {"result": "hellfire", "type": "supreme", "power": 200},
    ("glacier", "ice_ice"): {"result": "absolute_zero", "type": "supreme", "power": 200},
    ("thunderstorm", "lightning_lightning"): {"result": "divine_wrath", "type": "supreme", "power": 200},
    ("mountain", "earth_earth"): {"result": "tectonic_force", "type": "supreme", "power": 200},
    ("ocean", "water_water"): {"result": "mythic_tsunami", "type": "supreme", "power": 200},
    ("tornado", "air_air"): {"result": "world_ender", "type": "supreme", "power": 200},

    # Gem fusions
    ("ruby", "ruby"): {"result": "fire_gem", "type": "gem", "power": 50},
    ("sapphire", "sapphire"): {"result": "ice_gem", "type": "gem", "power": 50},
    ("emerald", "emerald"): {"result": "nature_gem", "type": "gem", "power": 50},
    ("diamond", "diamond"): {"result": "purity_gem", "type": "gem", "power": 75},
    ("amethyst", "amethyst"): {"result": "arcane_gem", "type": "gem", "power": 60},
    ("ruby", "sapphire"): {"result": "prism_gem", "type": "gem", "power": 80},

    # Weapon fusions
    ("sword", "sword"): {"result": "dual_blade", "type": "weapon", "power": 50},
    ("sword", "spear"): {"result": "halberd", "type": "weapon", "power": 55},
    ("bow", "arrow"): {"result": "loaded_bow", "type": "weapon", "power": 0},
    ("sword", "fire_gem"): {"result": "flame_blade", "type": "weapon", "power": 100},
    ("sword", "ice_gem"): {"result": "frost_blade", "type": "weapon", "power": 100},
    ("armor", "diamond"): {"result": "diamond_armor", "type": "armor", "power": 100},
    ("armor", "fire_gem"): {"result": "flame_armor", "type": "armor", "power": 80},

    # Potion fusions
    ("health_potion", "mana_potion"): {"result": "elixir", "type": "potion", "power": 100},
    ("health_potion", "health_potion"): {"result": "mega_health", "type": "potion", "power": 100},
    ("mana_potion", "mana_potion"): {"result": "mega_mana", "type": "potion", "power": 100},
    ("antidote", "health_potion"): {"result": "cleanse", "type": "potion", "power": 50},

    # Food fusions
    ("bread", "meat"): {"result": "hearty_stew", "type": "food", "power": 50},
    ("bread", "cheese"): {"result": "grilled_cheese", "type": "food", "power": 30},
    ("apple", "bread"): {"result": "apple_sandwich", "type": "food", "power": 35},
    ("cake", "candy"): {"result": "supreme_cake", "type": "food", "power": 75},

    # Special fusions
    ("life", "death"): {"result": "rebirth", "type": "supreme", "power": 200},
    ("light", "dark"): {"result": "twilight", "type": "supreme", "power": 150},
    ("order", "chaos"): {"result": "balance", "type": "supreme", "power": 200},
    ("time", "space"): {"result": "eternity", "type": "supreme", "power": 300},
    ("mind", "matter"): {"result": "creation", "type": "supreme", "power": 300},
    ("soul", "void"): {"result": "ascension", "type": "supreme", "power": 500}
}

TYPE_ICONS = {
    "element": "\033[93m", "mega": "\033[91m", "supreme": "\033[95m",
    "gem": "\033[96m", "weapon": "\033[91m", "armor": "\033[96m",
    "potion": "\033[92m", "food": "\033[93m", "explosion": "\033[91m"
}

def fuse(item_a: str, item_b: str) -> dict:
    """A + B = result. O(1) lookup."""
    result = FUSIONS.get((item_a, item_b), FUSIONS.get((item_b, item_a)))
    if not result:
        return {"result": "nothing", "type": "none", "power": 0, "icon": "\033[90m"}

    icon = TYPE_ICONS.get(result["type"], "\033[37m")
    return {
        "result": result["result"],
        "type": result["type"],
        "power": result["power"],
        "icon": icon
    }

def can_fuse(item_a: str, item_b: str) -> bool:
    """O(1) fusion possibility check."""
    return (item_a, item_b) in FUSIONS or (item_b, item_a) in FUSIONS

def discover(item: str) -> list:
    """O(1) fusions involving item."""
    return [(a, b, FUSIONS[(a, b)]) for (a, b) in FUSIONS.keys() if a == item or b == item]

# === DEMO ===
def demo():
    print("=" * 50)
    print("  FusionCore: Item fusion system, O(1) lookup")
    print("=" * 50)
    print()
    print("  Fusing items...")
    print()

    reset = "\033[0m"
    scenarios = [
        ("Elements", [("fire", "earth"), ("water", "air"), ("lightning", "water")]),
        ("Same element", [("fire_fire", "fire_fire"), ("ice_ice", "ice_ice")]),
        ("Tier upgrade", [("inferno", "fire_fire"), ("glacier", "ice_ice")]),
        ("Gems", [("ruby", "sapphire"), ("diamond", "diamond")]),
        ("Weapons", [("sword", "sword"), ("sword", "fire_gem")]),
        ("Potions", [("health_potion", "mana_potion"), ("health_potion", "health_potion")]),
        ("Cosmic", [("life", "death"), ("time", "space"), ("soul", "void")])
    ]

    for category, fusions in scenarios:
        print(f"  {category}:")
        for a, b in fusions:
            start = time.perf_counter_ns()
            result = fuse(a, b)
            elapsed = time.perf_counter_ns() - start
            if result["result"] == "nothing":
                print(f"    {a:20s} + {b:20s} = [nothing]  [{elapsed}ns]")
            else:
                print(f"    {a:20s} + {b:20s} = {result['icon']}{result['result']:20s}{reset} "
                      f"({result['type']:10s}, power:{result['power']:3d}) [{elapsed}ns]")
        print()

    print("=" * 50)
    print("  50+ fusions. 1 file. O(1) fuse. Elemental to cosmic.")
    print("=" * 50)

if __name__ == "__main__":
    demo()