utils: update grid helpers and modification utilities

src/lib/utils/gridHelpers.ts

@@ -19,7 +19,7 @@ export interface SlotRange {
 const GRID_CONFIGS: Record<GridType, SlotRange> = {
 	[GridType.Weapon]: { start: 0, end: 8, specialSlots: [-1] }, // mainhand + 9 grid slots
 	[GridType.Summon]: { start: 0, end: 5, specialSlots: [-1, 6] }, // main + 6 grid + friend
-	[GridType.Character]: { start: 1, end: 4, specialSlots: [] } // 4 slots (1-4), position 0 is protagonist (not user-selectable)
+	[GridType.Character]: { start: 0, end: 4, specialSlots: [] } // 5 character slots (0-4)
 }
 
 /**

src/lib/utils/modificationDetector.ts

@@ -94,3 +94,55 @@ export function hasAnyModification(
 ): boolean {
 	return detectModifications(type, item).hasModifications
 }
+
+// Weapon series that support weapon keys
+// 2 = Dark Opus, 3 = Draconic, 17 = Ultima, 24 = Astral, 34 = Superlative
+const WEAPON_KEY_SERIES = [2, 3, 17, 24, 34]
+
+/**
+ * Check if a weapon CAN be modified (has modifiable properties)
+ * This is different from hasModifications which checks if it HAS been modified
+ */
+export function canWeaponBeModified(gridWeapon: GridWeapon | undefined): boolean {
+	if (!gridWeapon?.weapon) return false
+
+	const weapon = gridWeapon.weapon
+
+	// Element can be changed (element = 0 means "any element")
+	const canChangeElement = weapon.element === 0
+
+	// Weapon keys (series-specific)
+	const hasWeaponKeys = WEAPON_KEY_SERIES.includes(weapon.series)
+
+	// AX skills
+	const hasAxSkills = weapon.ax === true
+
+	// Awakening (maxAwakeningLevel > 0 means it can have awakening)
+	const hasAwakening = (weapon.maxAwakeningLevel ?? 0) > 0
+
+	return canChangeElement || hasWeaponKeys || hasAxSkills || hasAwakening
+}
+
+/**
+ * Check if a character CAN be modified (has modifiable properties)
+ * This is different from hasModifications which checks if it HAS been modified
+ */
+export function canCharacterBeModified(gridCharacter: GridCharacter | undefined): boolean {
+	if (!gridCharacter?.character) return false
+
+	const character = gridCharacter.character
+
+	// Awakening (maxAwakeningLevel > 0 means it can have awakening)
+	const hasAwakening = (character.maxAwakeningLevel ?? 0) > 0
+
+	// All characters can have rings (Over Mastery)
+	const canHaveRings = true
+
+	// All characters can have earrings (Aetherial Mastery)
+	const canHaveEarring = true
+
+	// Perpetuity is only for non-MC characters (position > 0)
+	const canHavePerpetuity = gridCharacter.position > 0
+
+	return hasAwakening || canHaveRings || canHaveEarring || canHavePerpetuity
+}

src/lib/utils/modificationFormatters.ts

@@ -2,93 +2,102 @@ import type { SimpleAxSkill } from '$lib/types/api/entities'
 import { getRingStat, getEarringStat, getElementalizedEarringStat } from './masteryUtils'
 
 const AX_SKILL_NAMES: Record<number, string> = {
-  1: 'Attack',
-  2: 'HP',
-  3: 'Double Attack',
-  4: 'Triple Attack',
-  5: 'C.A. DMG',
-  6: 'C.A. DMG Cap',
-  7: 'Skill DMG',
-  8: 'Skill DMG Cap',
-  9: 'Stamina',
-  10: 'Enmity',
-  11: 'Critical Hit'
+	1: 'Attack',
+	2: 'HP',
+	3: 'Double Attack',
+	4: 'Triple Attack',
+	5: 'C.A. DMG',
+	6: 'C.A. DMG Cap',
+	7: 'Skill DMG',
+	8: 'Skill DMG Cap',
+	9: 'Stamina',
+	10: 'Enmity',
+	11: 'Critical Hit'
 }
 
 export function formatRingStat(
-  modifier: number,
-  strength: number,
-  locale: 'en' | 'ja' = 'en'
+	modifier: number,
+	strength: number,
+	locale: 'en' | 'ja' = 'en'
 ): string {
-  const stat = getRingStat(modifier)
-  if (!stat) return `Unknown +${strength}`
+	const stat = getRingStat(modifier)
+	if (!stat) return `Unknown +${strength}`
 
-  const statName = stat.name[locale]
-  return `${statName} +${strength}${stat.suffix}`
+	const statName = stat.name[locale]
+	return `${statName} +${strength}${stat.suffix}`
 }
 
 export function formatEarringStat(
-  modifier: number,
-  strength: number,
-  locale: 'en' | 'ja' = 'en',
-  characterElement?: number
+	modifier: number,
+	strength: number,
+	locale: 'en' | 'ja' = 'en',
+	characterElement?: number
 ): string {
-  // Use elementalized version if element is provided and it's an element-specific stat
-  const stat = characterElement !== undefined && (modifier === 3 || modifier === 4)
-    ? getElementalizedEarringStat(modifier, characterElement, locale)
-    : getEarringStat(modifier)
+	// Use elementalized version if element is provided and it's an element-specific stat
+	const stat =
+		characterElement !== undefined && (modifier === 3 || modifier === 4)
+			? getElementalizedEarringStat(modifier, characterElement, locale)
+			: getEarringStat(modifier)
 
-  if (!stat) return `Unknown +${strength}`
+	if (!stat) return `Unknown +${strength}`
 
-  const statName = stat.name[locale]
-  return `${statName} +${strength}${stat.suffix}`
+	const statName = stat.name[locale]
+	return `${statName} +${strength}${stat.suffix}`
 }
 
 export function formatAxSkill(ax: SimpleAxSkill): string {
-  const skillName = AX_SKILL_NAMES[ax.modifier] || `Unknown (${ax.modifier})`
-  const suffix = ax.modifier <= 2 ? '' : '%'
-  return `${skillName} +${ax.strength}${suffix}`
+	const skillName = AX_SKILL_NAMES[ax.modifier] || `Unknown (${ax.modifier})`
+	const suffix = ax.modifier <= 2 ? '' : '%'
+	return `${skillName} +${ax.strength}${suffix}`
 }
 
 export function getWeaponKeyTitle(series?: number): string {
-  switch (series) {
-    case 2:
-      return 'Opus Pendulums'
-    case 3:
-    case 34:
-      return 'Draconic Telumas'
-    case 17:
-      return 'Ultima Keys'
-    case 22:
-      return 'Revans Emblems'
-    default:
-      return 'Weapon Keys'
-  }
+	switch (series) {
+		case 2:
+			return 'Pendulums & Chains'
+		case 3:
+		case 34:
+			return 'Telumas'
+		case 17:
+			return 'Ultima Keys'
+		case 22:
+			return 'Emblems'
+		default:
+			return 'Weapon Keys'
+	}
 }
 
 export function formatUncapLevel(level?: number | null): string {
-  if (level === undefined || level === null) return '0★'
-  return `${level}★`
+	if (level === undefined || level === null) return '0★'
+	return `${level}★`
 }
 
 export function formatTranscendenceStep(step?: number | null): string {
-  if (!step || step === 0) return ''
-  return `Stage ${step}`
+	if (!step || step === 0) return ''
+	return `Stage ${step}`
 }
 
 export function getStatModifierIcon(type: 'ring' | 'earring', modifier: number): string | null {
-  return null
+	return null
 }
 
 export function getElementName(element?: number | null): string {
-  switch (element) {
-    case 0: return 'Null'
-    case 1: return 'Wind'
-    case 2: return 'Fire'
-    case 3: return 'Water'
-    case 4: return 'Earth'
-    case 5: return 'Dark'
-    case 6: return 'Light'
-    default: return 'Unknown'
-  }
-}
+	switch (element) {
+		case 0:
+			return 'Null'
+		case 1:
+			return 'Wind'
+		case 2:
+			return 'Fire'
+		case 3:
+			return 'Water'
+		case 4:
+			return 'Earth'
+		case 5:
+			return 'Dark'
+		case 6:
+			return 'Light'
+		default:
+			return 'Unknown'
+	}
+}