69 lines
2.3 KiB
TypeScript
69 lines
2.3 KiB
TypeScript
import { Injectable, BadRequestException, NotFoundException } from '@nestjs/common';
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import { InjectRepository } from '@nestjs/typeorm';
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import { Repository } from 'typeorm';
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import { CharacterItem } from '../item/character-item.entity';
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import { Character } from '../character/entities/character.entity';
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import { User } from '../user/user.entity';
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const MAX_FORGE_LEVEL = 5;
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const FORGE_BONUS_PER_LEVEL = 2; // +2 attack (weapon) ou +2 defense (armor) par niveau affiché
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// Risque d'échec par niveau cible (GDD exact)
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const FORGE_FAIL_CHANCE: Record<number, number> = {
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1: 0,
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2: 0,
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3: 0.20,
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4: 0.30,
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5: 0.40,
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};
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@Injectable()
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export class ForgeService {
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constructor(
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@InjectRepository(CharacterItem)
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private readonly charItemRepository: Repository<CharacterItem>,
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@InjectRepository(Character)
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private readonly characterRepository: Repository<Character>,
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) {}
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async upgradeItem(charItemId: string, user: User) {
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const char = await this.characterRepository.findOne({ where: { userId: user.id } });
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if (!char) throw new BadRequestException('Aucun personnage trouvé');
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const charItem = await this.charItemRepository.findOne({
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where: { id: charItemId, characterId: char.id },
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});
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if (!charItem) throw new NotFoundException('Item non trouvé dans l\'inventaire');
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if (charItem.forgeLevel >= MAX_FORGE_LEVEL) {
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throw new BadRequestException(`Niveau de forge maximum atteint (${MAX_FORGE_LEVEL})`);
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}
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const targetLevel = charItem.forgeLevel + 1;
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const failChance = FORGE_FAIL_CHANCE[targetLevel] ?? 0;
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const success = Math.random() >= failChance;
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if (success) {
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charItem.forgeLevel = targetLevel;
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await this.charItemRepository.save(charItem);
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const statLabel = charItem.item.type === 'weapon'
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? `+${FORGE_BONUS_PER_LEVEL} ATK`
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: `+${FORGE_BONUS_PER_LEVEL} DEF`;
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return {
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success: true,
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forgeLevel: charItem.forgeLevel,
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item: charItem.item.name,
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message: `Forge réussie ! ${charItem.item.name} [+${charItem.forgeLevel}] (${statLabel}).`,
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};
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}
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return {
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success: false,
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forgeLevel: charItem.forgeLevel,
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item: charItem.item.name,
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message: `Échec de forge ! ${charItem.item.name} reste au niveau [+${charItem.forgeLevel}].`,
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};
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}
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}
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