extends RefCounted
# These visually inspected families contain land, oceans and atmospheric clouds.
const EARTHLIKE_FAMILIES := ["Terrestrial", "Lush", "Tropical"]
const MATERIALS := ["silicon", "copper", "nickel", "tungsten", "mercury"]
const MATERIAL_NAMES := {"silicon": "Krzem", "copper": "Miedź", "nickel": "Nikiel", "tungsten": "Wolfram", "mercury": "Rtęć"}

static func is_earthlike(texture: Texture2D) -> bool:
	if texture == null:
		return false
	for family in EARTHLIKE_FAMILIES:
		if texture.resource_path.contains("/Solid/%s/" % family):
			return true
	return false

static func earthlike_textures() -> Array[Texture2D]:
	var found: Array[Texture2D] = []
	for texture in preload("res://scripts/levels/celestial_texture_catalog.gd").PLANET_TEXTURES:
		if is_earthlike(texture):
			found.append(texture)
	return found

static func generate(system_seed: int, index: int, name: String) -> Dictionary:
	var rng := RandomNumberGenerator.new()
	rng.seed = system_seed ^ (index * 0x504c414e) ^ 0x42494f4d
	var easy := rng.randf() < 0.7
	var oxygen := rng.randi_range(81, 100) if easy else rng.randi_range(0, 80)
	var temperature := rng.randi_range(-10, 40) if easy else rng.randi_range(-50, 100)
	var flora := 0 if easy else rng.randi_range(5, 50)
	var raw := raw_threats({"oxygen":oxygen,"temperature":temperature,"flora":flora})
	var difficulty := (float(raw.oxygen)+float(raw.temperature)+float(raw.biology))/300.0
	return {"id": "%d:planet:%d" % [system_seed, index], "name": name, "oxygen": oxygen, "temperature": temperature, "flora": flora, "easy": easy, "difficulty": difficulty, "landing_damage": roundi(lerpf(5.0, 20.0, difficulty)), "seed": rng.randi(), "index": index}

const THREAT_KEYS := ["oxygen","temperature","biology"]
const POI_SAFE_CHANCES := [0.90,0.70,0.40]
const POI_DANGER_CHANCES := [0.15,0.05,0.0]

static func raw_threats(profile: Dictionary) -> Dictionary:
	var oxygen := clampf((80.0-float(profile.oxygen))/80.0,0.0,1.0)*100.0
	var temperature := float(profile.temperature)
	var thermal := 0.0
	if temperature < -10.0:
		thermal = clampf((-10.0-temperature)/40.0,0.0,1.0)*100.0
	elif temperature > 40.0:
		thermal = clampf((temperature-40.0)/60.0,0.0,1.0)*100.0
	var biology := clampf(float(profile.flora)/50.0,0.0,1.0)*100.0
	return {"oxygen":oxygen,"temperature":thermal,"biology":biology}

static func threat_report(profile: Dictionary, captain: Resource) -> Dictionary:
	var gear := preload("res://scripts/planets/captain_equipment.gd")
	var raw := raw_threats(profile)
	var effective := {}
	var raw_total := 0.0
	var total := 0.0
	for index in 3:
		var key: String = THREAT_KEYS[index]
		var protection := minf(100.0,2.0*maxi(0,gear.level(captain,gear.KINDS[index])))
		effective[key] = maxf(0.0,float(raw[key])-protection)
		raw_total += float(raw[key])
		total += float(effective[key])
	return {"raw":raw,"effective":effective,"raw_total":raw_total,"total":total}

static func global_threat(profile: Dictionary, captain: Resource) -> float:
	return float(threat_report(profile,captain).total)

static func poi_loot_report(profile: Dictionary, captain: Resource) -> Dictionary:
	var gear := preload("res://scripts/planets/captain_equipment.gd")
	var equipped_levels := 0.0
	for kind in gear.KINDS: equipped_levels += clampi(gear.level(captain,kind),0,50)
	var gear_multiplier := 1.0+(equipped_levels/3.0)*0.02
	var threat := global_threat(profile,captain)
	var recovery := clampf(1.0-threat/300.0,0.15,1.0)
	return {"multiplier":gear_multiplier*recovery,"recovery":recovery,"gear_multiplier":gear_multiplier,"threat":threat}

static func success_chance(profile: Dictionary, captain: Resource, stage: int) -> float:
	var index := clampi(stage,0,2)
	var severity := clampf(global_threat(profile,captain)/150.0,0.0,1.0)
	return lerpf(POI_SAFE_CHANCES[index],POI_DANGER_CHANCES[index],severity)

static func average_success_chance(profile: Dictionary, captain: Resource) -> float:
	var total := 0.0
	for stage in 3:
		total += success_chance(profile,captain,stage)
	return total/3.0

static func biome_name(profile: Dictionary) -> String:
	if bool(profile.easy):
		return "Łagodna biosfera"
	if int(profile.temperature) < -10:
		return "Zimna biosfera"
	if int(profile.temperature) > 40:
		return "Gorąca biosfera"
	return "Dzika biosfera"

static func scan_description(profile: Dictionary, captain: Resource) -> String:
	var report := threat_report(profile,captain)
	var loot := poi_loot_report(profile,captain)
	return "%s · %s\nTLEN %d%% · zagrożenie %.0f%% → %.0f%%\nTEMPERATURA %d°C · zagrożenie %.0f%% → %.0f%%\nBIOLOGICZNE %d/50 · zagrożenie %.0f%% → %.0f%%\nZAGROŻENIE GLOBALNE: %.1f%% / 300%%\nBez sprzętu: %.1f%% · redukcja 2 pp/poziom\nŁUP POI: ×%.2f · odzysk %.0f%% · sprzęt ×%.2f\nPOI: podleć i naciśnij E, aby odebrać znaleziska.\nLądowanie: −%d HP · Lądownik: %d%%" % [
		profile.name,biome_name(profile),profile.oxygen,report.raw.oxygen,report.effective.oxygen,
		profile.temperature,report.raw.temperature,report.effective.temperature,
		profile.flora,report.raw.biology,report.effective.biology,
		report.total,report.raw_total,loot.multiplier,loot.recovery*100.0,loot.gear_multiplier,
		profile.landing_damage,ceili(captain.expedition.lander_hp)]