topfans/frontend/composables/useLaserMint.js

import { ref } from 'vue'
import { estimateMintCostApi } from '@/utils/api.js'
import { submitCraftMintFromPath } from '@/utils/craftMintSubmit.js'
import { getStoredUser } from '@/utils/getStoredUser.js'

function updateLocalBalance(newBalance) {
	try {
		// ★ 2026-07-27 refactor:旧写法 `typeof userStr === 'string' ? JSON.parse(userStr) : {...}`
		//   在 userStr 是 "" 时 typeof 仍是 'string',仍会撞到 JSON.parse crash。
		//   统一用 @/utils/getStoredUser,任何异常路径都已封装,这里只管写回。
		const user = getStoredUser()
		if (!user) return
		user.crystal_balance = Number(newBalance) || 0
		uni.setStorageSync('user', JSON.stringify(user))
		uni.$emit('balanceUpdated', { crystal_balance: user.crystal_balance })
	} catch (e) {
		console.warn('[useLaserMint] updateLocalBalance failed:', e)
	}
}

/**
 * laser-result 选卡确认后的铸造（估价 → ConfirmModal → craftMintSubmit 多素材上传）
 */
export function useLaserMint({ getSelectedImagePath, getSelectedOssKey, getSelectedPresetIndex, formDataRef, getInstanceNo }) {
	const showConfirmModal = ref(false)
	const confirmCostInfo = ref({
		costCrystal: 0,
		currentBalance: 0,
		mintCount: 0,
		nextTierCost: 0,
	})

	const selectAsset = async () => {
		const imagePath = getSelectedImagePath()
		if (!imagePath) {
			uni.showToast({ title: '缺少作品图', icon: 'none' })
			return
		}

		try {
			uni.showLoading({ title: '加载中…', mask: true })
			const costRes = await estimateMintCostApi()
			uni.hideLoading()

			if (costRes.code === 0 && costRes.data) {
				confirmCostInfo.value = {
					costCrystal: costRes.data.cost_crystal || 0,
					currentBalance: costRes.data.current_balance || 0,
					mintCount: costRes.data.mint_count || 0,
					nextTierCost: costRes.data.next_tier_cost || 0,
				}
			} else {
				confirmCostInfo.value = {
					costCrystal: 100,
					currentBalance: 0,
					mintCount: 0,
					nextTierCost: 0,
				}
			}
		} catch (e) {
			uni.hideLoading()
			console.error('[useLaserMint] estimateMintCostApi failed:', e)
			confirmCostInfo.value = {
				costCrystal: 100,
				currentBalance: 0,
				mintCount: 0,
				nextTierCost: 0,
			}
		}

		showConfirmModal.value = true
	}

	const handleConfirmMint = async () => {
		showConfirmModal.value = false

		const imagePath = getSelectedImagePath()
		if (!imagePath) {
			uni.showToast({ title: '缺少作品图', icon: 'none' })
			return
		}

		if (confirmCostInfo.value.currentBalance < confirmCostInfo.value.costCrystal) {
			uni.showToast({ title: '水晶余额不足，无法铸造', icon: 'none' })
			return
		}

		uni.showLoading({ title: '铸造中…', mask: true })
		try {
			await submitCraftMintFromPath({
				imagePath,
				ossKey: getSelectedOssKey ? getSelectedOssKey() : '',
				instanceNo: getInstanceNo ? getInstanceNo() : '',
				formData: formDataRef.value,
				laserPresetIndex: getSelectedPresetIndex(),
			})

			const balanceAfter = Math.max(
				0,
				Number(confirmCostInfo.value.currentBalance) - Number(confirmCostInfo.value.costCrystal)
			)
			updateLocalBalance(balanceAfter)

			uni.navigateTo({ url: '/pages/castlove/success' })
		} catch (e) {
			console.error('[useLaserMint] mint failed:', e)
			uni.showToast({ title: e?.message || '铸造失败', icon: 'none' })
		} finally {
			uni.hideLoading()
		}
	}

	const handleCancelMint = () => {
		showConfirmModal.value = false
	}

	return {
		showConfirmModal,
		confirmCostInfo,
		selectAsset,
		handleConfirmMint,
		handleCancelMint,
	}
}