Genarrative/apps/ai-game-creator-shell/src/view/project-development/resourceEditModel.ts

import {
  type ProjectResource,
  projectResourceDisplayKind,
} from './resourceProjectionModel';

export type LocalProjectResourceEditKind =
  | 'image-reference'
  | 'svg'
  | 'character-animation'
  | 'video'
  | 'sound-effect'
  | 'background-music'
  | 'text'
  | 'agent-result'
  | 'version';

export type ProjectResourceEditCapability = {
  route: 'derive';
  editKind: LocalProjectResourceEditKind;
  sourceMediaType: string;
  semanticNotice: string | null;
  generationMode?: 'create' | 'derive';
};

const extensionMediaTypes: Record<string, string> = {
  png: 'image/png',
  jpg: 'image/jpeg',
  jpeg: 'image/jpeg',
  webp: 'image/webp',
  gif: 'image/gif',
  svg: 'image/svg+xml',
  avif: 'image/avif',
  bmp: 'image/bmp',
  mp4: 'video/mp4',
  webm: 'video/webm',
  mov: 'video/quicktime',
  mp3: 'audio/mpeg',
  wav: 'audio/wav',
  ogg: 'audio/ogg',
  m4a: 'audio/mp4',
  aac: 'audio/aac',
  flac: 'audio/flac',
  opus: 'audio/opus',
  md: 'text/markdown',
  markdown: 'text/markdown',
  mdx: 'application/mdx',
  txt: 'text/plain',
  json: 'application/json',
  yaml: 'application/yaml',
  yml: 'application/yaml',
  toml: 'application/toml',
  html: 'text/html',
  htm: 'text/html',
  css: 'text/css',
  scss: 'text/css',
  less: 'text/css',
  js: 'text/javascript',
  jsx: 'text/javascript',
  mjs: 'text/javascript',
  cjs: 'text/javascript',
  ts: 'text/typescript',
  tsx: 'text/typescript',
  rs: 'text/x-rust',
  py: 'text/x-python',
  go: 'text/x-go',
  java: 'text/plain',
  kt: 'text/plain',
  kts: 'text/plain',
  c: 'text/plain',
  cc: 'text/plain',
  cpp: 'text/plain',
  h: 'text/plain',
  hpp: 'text/plain',
  cs: 'text/plain',
  swift: 'text/plain',
  php: 'text/plain',
  rb: 'text/plain',
  lua: 'text/plain',
  sh: 'text/plain',
  bash: 'text/plain',
  zsh: 'text/plain',
  sql: 'text/plain',
  graphql: 'text/plain',
  gql: 'text/plain',
  xml: 'text/plain',
  csv: 'text/csv',
  ini: 'text/plain',
  conf: 'text/plain',
  vue: 'text/plain',
  svelte: 'text/plain',
};

function pathExtension(path: string) {
  return path.split(/[?#]/u, 1)[0]?.split('.').pop()?.toLowerCase() ?? '';
}

export function canonicalProjectedResourceMediaType(resource: ProjectResource) {
  const declared = resource.mediaType.trim().toLowerCase();
  if (/^[a-z0-9.+-]+\/[a-z0-9.+-]+$/u.test(declared)) {
    return declared;
  }
  return extensionMediaTypes[pathExtension(resource.path)] ?? declared;
}

function isBackgroundMusic(resource: ProjectResource) {
  const semanticSource = `${resource.subtype} ${resource.path}`.toLowerCase();
  return ['background', 'bgm', 'music', 'theme'].some((marker) =>
    semanticSource.includes(marker),
  );
}

export function resolveProjectResourceEditCapability(
  resource: ProjectResource,
): ProjectResourceEditCapability {
  if (resource.version) {
    return {
      route: 'derive',
      editKind: 'version',
      sourceMediaType: 'application/vnd.genarrative.project-version+json',
      semanticNotice: null,
    };
  }
  if (resource.subtype === 'agent-result') {
    return {
      route: 'derive',
      editKind: 'agent-result',
      sourceMediaType: 'text/markdown',
      semanticNotice: null,
    };
  }

  const mediaType = canonicalProjectedResourceMediaType(resource);
  if (mediaType === 'image/svg+xml') {
    return {
      route: 'derive',
      editKind: 'svg',
      sourceMediaType: mediaType,
      semanticNotice: null,
    };
  }
  if (mediaType.startsWith('image/')) {
    return {
      route: 'derive',
      editKind: 'image-reference',
      sourceMediaType: mediaType,
      semanticNotice: null,
    };
  }
  if (mediaType.startsWith('video/')) {
    return {
      route: 'derive',
      editKind: 'video',
      sourceMediaType: mediaType,
      semanticNotice: null,
    };
  }
  if (
    mediaType.startsWith('audio/') ||
    projectResourceDisplayKind(resource) === 'audio'
  ) {
    return {
      route: 'derive',
      editKind: isBackgroundMusic(resource)
        ? 'background-music'
        : 'sound-effect',
      sourceMediaType: mediaType,
      semanticNotice: '音频将基于原资源语义派生重制，不会修改原音频波形。',
    };
  }
  return {
    route: 'derive',
    editKind: 'text',
    sourceMediaType: mediaType,
    semanticNotice: null,
  };
}

export function resolveProjectCharacterAnimationCapability(
  resource: ProjectResource,
): Extract<ProjectResourceEditCapability, { route: 'derive' }> | null {
  const mediaType = canonicalProjectedResourceMediaType(resource);
  if (!mediaType.startsWith('image/')) return null;
  return {
    route: 'derive',
    editKind: 'character-animation',
    sourceMediaType: mediaType,
    semanticNotice: '将基于当前图片生成角色动作序列帧，源图片保持不变。',
    generationMode: 'derive',
  };
}

export function defaultDerivedResourceName(resource: ProjectResource) {
  const baseName = resource.label.replace(/\.[^.]+$/u, '').trim();
  return `${baseName || '资源'}-编辑版`;
}

/**
 * 角色动画派生资源的默认名称。
 *
 * 与 `defaultDerivedResourceName` 同一条口径（去扩展名 + 兜底名），只换后缀：动作序列帧
 * 不是"编辑版"，用「-角色动画」让新素材在资源卡上一眼认出来源与产出类型。
 */
export function defaultCharacterAnimationResourceName(
  resource: ProjectResource,
) {
  const baseName = resource.label.replace(/\.[^.]+$/u, '').trim();
  return `${baseName || '资源'}-角色动画`;
}

export function resourceEditPromptMaxLength(
  editKind: LocalProjectResourceEditKind,
) {
  switch (editKind) {
    case 'background-music':
      return 140;
    case 'sound-effect':
      return 1_900;
    case 'video':
      return 4_000;
    case 'character-animation':
      return 4_000;
    default:
      return 32_000;
  }
}

/** 提示词被长度上限截断时给用户看的替代文案；动过内容就必须说，不许静默丢内容。 */
export const RESOURCE_EDIT_PROMPT_TRUNCATED_NOTICE = '已按长度上限截断';

/**
 * 按资源类型的提示词上限截断（与 Rust `resource_editor.rs` 的上限同口径，只是本地先截）。
 *
 * 上限本身不动后端；这里只处理润色回填这类程序化写入——输入框的 `maxLength` 只管用户键入。
 */
export function truncateResourceEditPrompt(
  prompt: string,
  editKind: LocalProjectResourceEditKind,
): { text: string; notice: string | null } {
  const limit = resourceEditPromptMaxLength(editKind);
  if (prompt.length <= limit) {
    return { text: prompt, notice: null };
  }
  return {
    text: prompt.slice(0, limit),
    notice: RESOURCE_EDIT_PROMPT_TRUNCATED_NOTICE,
  };
}

/** 一次资源编辑请求的身份：绑定到它铸造时的那句提示词。 */
export type ResourceEditRequestIdentity = {
  operationId: string;
  idempotencyKey: string;
  prompt: string;
};

export function createResourceEditRequestIdentity(
  prompt: string,
): ResourceEditRequestIdentity {
  return {
    operationId: crypto.randomUUID(),
    idempotencyKey: crypto.randomUUID(),
    prompt,
  };
}

/**
 * 复用还是重铸请求身份。
 *
 * Rust 的 `resource_edit_request_fingerprint` 把 `prompt` 也算进摘要
 * （`src-tauri/src/project/resource_editor.rs:807-827`），因此同一个 operationId /
 * 幂等键带着改过的提示词重试，会被判成「operationId 或幂等键已绑定到不同资源编辑请求」
 * （同文件 :5216-5225）。所以身份只对它铸造时的那句提示词有效：提示词变了就重铸，
 * 而不是靠禁用润色入口来回避。
 *
 * 提示词没变时照旧复用：失败重试仍命中同一 operation 账本，不会重复扣费。
 */
export function resolveResourceEditRequestIdentity(
  current: ResourceEditRequestIdentity | null,
  prompt: string,
): ResourceEditRequestIdentity {
  return current && current.prompt === prompt
    ? current
    : createResourceEditRequestIdentity(prompt);
}