extends Control
## FragmentCraftPanel — Shows all craftable skins and their fragment requirements.
## Linked from GachaPanel via the "🧩 Fragment Craft" button.

signal closed

# ─── Node refs ───────────────────────────────────────────────────────────────
@onready var back_btn         := %BackBtn         as Button
@onready var recipe_list      := %RecipeList      as VBoxContainer
@onready var status_label     := %StatusLabel     as Label
@onready var common_label     := %CommonLabel     as Label
@onready var uncommon_label   := %UncommonLabel   as Label
@onready var rare_label       := %RareLabel       as Label

const FRAG_ICONS := {
	"frag_common":   "⬜",
	"frag_uncommon": "🟩",
	"frag_rare":     "🟦"
}

# ─── Lifecycle ────────────────────────────────────────────────────────────────
func _ready() -> void:
	back_btn.pressed.connect(_on_close)

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

func _refresh() -> void:
	_update_frag_balance()
	_rebuild_recipe_list()

# ─── Fragment balance header ──────────────────────────────────────────────────
func _update_frag_balance() -> void:
	var frags: Dictionary = UserProfileManager.fragments
	common_label.text = str(frags.get("frag_common", 0))
	uncommon_label.text = str(frags.get("frag_uncommon", 0))
	rare_label.text = str(frags.get("frag_rare", 0))

# ─── Recipe cards ─────────────────────────────────────────────────────────────
func _rebuild_recipe_list() -> void:
	for c in recipe_list.get_children(): c.queue_free()
	await get_tree().process_frame

	var recipes: Dictionary = GachaManager.get_all_recipes()
	for recipe_id in recipes:
		var recipe: Dictionary = recipes[recipe_id]
		var card := _make_recipe_card(recipe_id, recipe)
		recipe_list.add_child(card)

func _make_recipe_card(recipe_id: String, recipe: Dictionary) -> PanelContainer:
	var can_craft: bool = GachaManager.can_craft(recipe_id)
	var frags: Dictionary = UserProfileManager.fragments

	var panel := PanelContainer.new()
	panel.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	
	# Apply Tekton panel style
	var panel_style := StyleBoxFlat.new()
	panel_style.bg_color = Color(0.14117648, 0.16862746, 0.19215687, 1)
	panel_style.corner_radius_top_left = 12
	panel_style.corner_radius_top_right = 12
	panel_style.corner_radius_bottom_right = 12
	panel_style.corner_radius_bottom_left = 12
	panel_style.shadow_color = Color(0, 0, 0, 0.3529412)
	panel_style.shadow_size = 4
	panel_style.shadow_offset = Vector2(-2, 2)
	panel.add_theme_stylebox_override("panel", panel_style)

	var margin := MarginContainer.new()
	margin.add_theme_constant_override("margin_left", 14)
	margin.add_theme_constant_override("margin_top", 10)
	margin.add_theme_constant_override("margin_right", 14)
	margin.add_theme_constant_override("margin_bottom", 10)
	panel.add_child(margin)

	var hbox := HBoxContainer.new()
	hbox.add_theme_constant_override("separation", 14)
	margin.add_child(hbox)

	# Left info
	var vbox := VBoxContainer.new()
	vbox.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	vbox.add_theme_constant_override("separation", 4)
	hbox.add_child(vbox)

	var name_lbl := Label.new()
	name_lbl.text = recipe.get("name", recipe_id)
	name_lbl.add_theme_font_size_override("font_size", 16)
	name_lbl.add_theme_color_override("font_color", Color(0.9, 0.8, 0.3))
	vbox.add_child(name_lbl)

	var char_cat_lbl := Label.new()
	char_cat_lbl.text = "%s  •  %s" % [recipe.get("character", "All"), recipe.get("category", "").capitalize()]
	char_cat_lbl.add_theme_font_size_override("font_size", 11)
	char_cat_lbl.add_theme_color_override("font_color", Color(0.65, 0.65, 0.65))
	vbox.add_child(char_cat_lbl)

	# Fragment cost row
	var cost_hbox := HBoxContainer.new()
	cost_hbox.add_theme_constant_override("separation", 12)
	vbox.add_child(cost_hbox)

	var cost: Dictionary = recipe.get("cost", {})
	for fid in ["frag_common", "frag_uncommon", "frag_rare"]:
		if not cost.has(fid): continue
		var needed: int = cost[fid]
		var have: int   = frags.get(fid, 0)
		var icon: String = FRAG_ICONS.get(fid, "?")
		var cost_lbl := Label.new()
		cost_lbl.text = "%s %d/%d" % [icon, have, needed]
		cost_lbl.add_theme_font_size_override("font_size", 13)
		cost_lbl.add_theme_color_override("font_color",
			Color(0.4, 1.0, 0.5) if have >= needed else Color(1.0, 0.4, 0.4))
		cost_hbox.add_child(cost_lbl)

	# Craft button with Tekton dark style
	var craft_btn := Button.new()
	craft_btn.text = "🔨 Craft"
	craft_btn.custom_minimum_size = Vector2(100, 40)
	craft_btn.disabled = not can_craft
	
	var btn_style := StyleBoxFlat.new()
	btn_style.bg_color = Color(0.15, 0.15, 0.15, 1)
	btn_style.corner_radius_top_left = 8
	btn_style.corner_radius_top_right = 8
	btn_style.corner_radius_bottom_right = 8
	btn_style.corner_radius_bottom_left = 8
	craft_btn.add_theme_stylebox_override("normal", btn_style)
	
	if not can_craft:
		craft_btn.modulate = Color(0.5, 0.5, 0.5, 0.7)
	craft_btn.pressed.connect(_on_craft_pressed.bind(recipe_id, panel))
	hbox.add_child(craft_btn)

	return panel

# ─── Craft action ─────────────────────────────────────────────────────────────
func _on_craft_pressed(recipe_id: String, _card: PanelContainer) -> void:
	var ok := GachaManager.craft(recipe_id)
	if ok:
		var recipes := GachaManager.get_all_recipes()
		var name: String = recipes.get(recipe_id, {}).get("name", recipe_id)
		_set_status("✅ Crafted: %s!" % name, Color(0.4, 1.0, 0.4))
		_refresh()
	else:
		_set_status("❌ Not enough fragments.", Color(1.0, 0.4, 0.4))

func _set_status(msg: String, col: Color = Color.WHITE) -> void:
	status_label.add_theme_color_override("font_color", col)
	status_label.text = msg
	await get_tree().create_timer(3.0).timeout
	if status_label.text == msg: status_label.text = ""

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