extends Control
## GachaPanel — Two-banner gacha interface.
## Banners: Star (✦) and Gold (▤)
## Pull results shown in animated card reveal.

signal closed

# ─── Node refs ───────────────────────────────────────────────────────────────
@onready var back_btn         := %BackBtn           as Button
@onready var star_tab_btn     := %StarTabBtn        as Button
@onready var gold_tab_btn     := %GoldTabBtn        as Button
@onready var banner_label     := %BannerLabel       as Label
@onready var balance_label    := %BalanceLabel      as Label
@onready var pity_label       := %PityLabel         as Label
@onready var pull_1_btn       := %Pull1Btn          as Button
@onready var pull_10_btn      := %Pull10Btn         as Button
@onready var cost_1_label     := %Cost1Label        as Label
@onready var cost_10_label    := %Cost10Label       as Label
@onready var rates_label      := %RatesLabel        as Label
@onready var result_panel     := %ResultPanel       as PanelContainer
@onready var result_grid      := %ResultGrid        as GridContainer
@onready var close_result_btn := %CloseResultBtn    as Button
@onready var craft_btn        := %CraftBtn          as Button
@onready var status_label     := %StatusLabel       as Label

# ─── State ───────────────────────────────────────────────────────────────────
var _current_banner: String = "star"
var _pulling: bool = false

const RARITY_COLORS := {
	"common":     Color(0.80, 0.80, 0.80),
	"uncommon":   Color(0.30, 0.85, 0.35),
	"rare":       Color(0.20, 0.55, 1.00),
	"real_prize": Color(1.00, 0.75, 0.10)
}
const RARITY_LABELS := {
	"common":     "Common",
	"uncommon":   "Uncommon",
	"rare":       "Rare",
	"real_prize": "✨ REAL PRIZE ✨"
}

# ─── Lifecycle ────────────────────────────────────────────────────────────────
func _ready() -> void:
	back_btn.pressed.connect(_on_close)
	star_tab_btn.pressed.connect(func(): _switch_banner("star"))
	gold_tab_btn.pressed.connect(func(): _switch_banner("gold"))
	pull_1_btn.pressed.connect(func(): _do_pull(1))
	pull_10_btn.pressed.connect(func(): _do_pull(10))
	close_result_btn.pressed.connect(func(): result_panel.hide())
	craft_btn.pressed.connect(_on_open_craft)
	result_panel.hide()
	_switch_banner("star")

func show_panel() -> void:
	show()
	_refresh_ui()

# ─── Banner switching ─────────────────────────────────────────────────────────
func _switch_banner(id: String) -> void:
	_current_banner = id
	star_tab_btn.modulate = Color(1.3, 1.1, 0.3) if id == "star" else Color.WHITE
	gold_tab_btn.modulate = Color(1.3, 1.1, 0.3) if id == "gold" else Color.WHITE
	_refresh_ui()

func _refresh_ui() -> void:
	var gd: Dictionary  = GachaManager.data
	var banner: Dictionary = gd.get("banners", {}).get(_current_banner, {})
	if banner.is_empty(): return

	var currency: String = banner.get("currency", "star")
	var icon: String     = "✦" if currency == "star" else "▤"
	var bal: int         = GachaManager.get_balance(_current_banner)
	var pity: int        = GachaManager.get_pity(_current_banner)
	var pity_at: int     = banner.get("pity_at", 90)
	var c1: int          = banner.get("pull_1_cost", 0)
	var c10: int         = banner.get("pull_10_cost", 0)
	var rates: Dictionary = banner.get("rates", {})

	banner_label.text    = banner.get("name", "Banner")
	balance_label.text   = "%s %d" % [icon, bal]
	pity_label.text      = "Pity: %d / %d" % [pity, pity_at]
	cost_1_label.text    = "%s %d" % [icon, c1]
	cost_10_label.text   = "%s %d" % [icon, c10]
	pull_1_btn.disabled  = (bal < c1) or _pulling
	pull_10_btn.disabled = (bal < c10) or _pulling

	var real_pool: Array = gd.get("pools", {}).get("real_prize", [])
	var real_names: Array = []
	for rid in real_pool:
		var rd = gd.get("real_prize_catalog", {}).get(rid, {})
		real_names.append(rd.get("name", rid))

	rates_label.text = (
		"Common %.0f%%   Uncommon %.0f%%   Rare %.0f%%   ✨Real Prize %.1f%%\n" +
		"Guaranteed Real Prize every %d pulls (current pity: %d)\n\n" +
		"✨ Exclusive Real Prizes:\n" + "\n".join(real_names.map(func(n): return "  • " + n))
	) % [
		rates.get("common", 0) * 100,
		rates.get("uncommon", 0) * 100,
		rates.get("rare", 0) * 100,
		rates.get("real_prize", 0) * 100,
		pity_at, pity
	]

# ─── Pull ─────────────────────────────────────────────────────────────────────
func _do_pull(count: int) -> void:
	if _pulling: return
	_pulling = true
	status_label.text = "Rolling..."
	var results: Array = await _run_pull(count)
	_pulling = false
	if results.is_empty():
		status_label.text = "❌ Not enough currency!"
		_refresh_ui()
		return
	status_label.text = ""
	_refresh_ui()
	_show_results(results)

func _run_pull(count: int) -> Array:
	# Yield one frame so UI updates first
	await get_tree().process_frame
	return GachaManager.pull(_current_banner, count)

# ─── Result display ───────────────────────────────────────────────────────────
func _show_results(results: Array) -> void:
	# Clear old cards
	for c in result_grid.get_children(): c.queue_free()
	await get_tree().process_frame

	result_panel.show()
	for res in results:
		var card := _make_result_card(res)
		result_grid.add_child(card)
		# Staggered reveal
		await get_tree().create_timer(0.08).timeout

func _make_result_card(res: Dictionary) -> PanelContainer:
	var rarity: String  = res.get("rarity", "common")
	var col: Color      = RARITY_COLORS.get(rarity, Color.WHITE)
	var label_txt: String = RARITY_LABELS.get(rarity, rarity.capitalize())

	var panel := PanelContainer.new()
	panel.custom_minimum_size = Vector2(110, 130)

	var margin := MarginContainer.new()
	margin.add_theme_constant_override("margin_left", 8)
	margin.add_theme_constant_override("margin_top", 8)
	margin.add_theme_constant_override("margin_right", 8)
	margin.add_theme_constant_override("margin_bottom", 8)
	panel.add_child(margin)

	var vbox := VBoxContainer.new()
	vbox.alignment = BoxContainer.ALIGNMENT_CENTER
	margin.add_child(vbox)

	# Rarity icon
	var icon_lbl := Label.new()
	icon_lbl.text = _rarity_icon(rarity)
	icon_lbl.add_theme_font_size_override("font_size", 36)
	icon_lbl.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	icon_lbl.add_theme_color_override("font_color", col)
	vbox.add_child(icon_lbl)

	# Item name
	var name_lbl := Label.new()
	name_lbl.text = res.get("name", "?")
	name_lbl.add_theme_font_size_override("font_size", 11)
	name_lbl.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	name_lbl.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	name_lbl.add_theme_color_override("font_color", col)
	vbox.add_child(name_lbl)

	# Rarity label
	var rar_lbl := Label.new()
	rar_lbl.text = label_txt
	rar_lbl.add_theme_font_size_override("font_size", 9)
	rar_lbl.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	rar_lbl.add_theme_color_override("font_color", col.lerp(Color.WHITE, 0.3))
	vbox.add_child(rar_lbl)

	# Flash animation
	panel.modulate.a = 0.0
	var tween := create_tween()
	tween.tween_property(panel, "modulate:a", 1.0, 0.25)
	if rarity == "real_prize":
		tween.tween_property(panel, "modulate", Color(1.4, 1.3, 0.5, 1.0), 0.2)
		tween.tween_property(panel, "modulate", Color.WHITE, 0.3)

	return panel

func _rarity_icon(rarity: String) -> String:
	match rarity:
		"common":     return "⬜"
		"uncommon":   return "🟩"
		"rare":       return "🟦"
		"real_prize": return "✨"
	return "❓"

# ─── Craft link ───────────────────────────────────────────────────────────────
func _on_open_craft() -> void:
	hide()
	# Find or load the fragment craft panel in the scene tree
	var main = get_tree().current_scene
	var fcp = main.get_node_or_null("FragmentCraftPanel")
	if fcp:
		fcp.show_panel()

func _on_close() -> void:
	hide()
	closed.emit()