/**
 * 人类工具的卡协议(编码规范 §8.1 / §9;语义出处 OS 05,AM 06/07)。
 *
 * **双层边界**:范式(loop / flow / skill)是后端实现逻辑的模型,只存在于引擎层;
 * 本文件是**前端呈现协议**,前端永远感知不到范式。旧文「四卡」的映射:
 *   执行卡 → 执行工单(work order · execution)
 *   放行卡 → 验收(工作区可修订报告 + 对话区验收单)(work order · acceptance)
 *   决策 / 补全 → 对话卡(decision / elicitation)
 * 落地失败卡 = 执行工单的系统预置形态,不构成第五种卡(OS 7.3)。
 *
 * 形状以 2026-07-26 原型定稿为准(`~/coding/JCAI_PRD/workbench/_data/model.ts`);
 * 枚举值改用英文标识符 + 本文件的 *_LABEL 字典,界面文案由字典给出、与原型逐字一致。
 */
import { z } from 'zod';
import {
  cardIdSchema,
  deliverableIdSchema,
  stageIdSchema,
  staffIdSchema,
  workOrderIdSchema,
} from './id.ts';
import { acceptanceLevelSchema, rejectionKindSchema } from './terminal.ts';

/* ── 基础原语 ─────────────────────────────────────────────────────────── */

export const TONES = ['ok', 'warn', 'danger', 'brand', 'muted'] as const;
export const toneSchema = z.enum(TONES);
export type Tone = z.infer<typeof toneSchema>;

/** 依据快照:调用必附上下文(OS 05)—— 裸调用基座必须拒发 */
export const basisSchema = z.array(z.object({ k: z.string(), v: z.string() }));
export type Basis = z.infer<typeof basisSchema>;

export const formOptionSchema = z.object({
  value: z.string(),
  label: z.string(),
  negative: z.boolean().optional(),
});
export type FormOption = z.infer<typeof formOptionSchema>;

export const FORM_FIELD_KINDS = [
  'text',
  'textarea',
  'radio',
  'number',
  'select',
  'check',
  'date',
  'money',
  'file',
] as const;
export const formFieldKindSchema = z.enum(FORM_FIELD_KINDS);
export type FormFieldKind = z.infer<typeof formFieldKindSchema>;

/** 表单字段:结构化交互的原子。卡片表单由本 schema 驱动渲染与校验,后端回传校验同 schema(§9.2) */
export const formFieldSchema = z.object({
  key: z.string().min(1),
  label: z.string(),
  kind: formFieldKindSchema,
  placeholder: z.string().optional(),
  options: z.array(formOptionSchema).optional(),
  /** 字段分组(渲染为表单小节) */
  group: z.string().optional(),
  hint: z.string().optional(),
  /** AI 拟值 —— 验收工单落地时已填好,人可改全部字段 */
  ai: z.string().optional(),
  unit: z.string().optional(),
  required: z.boolean().optional(),
  cols: z.union([z.literal(1), z.literal(2)]).optional(),
});
export type FormField = z.infer<typeof formFieldSchema>;

/* ── 视图块:视图区的结构化呈现(活动推送,只读) ────────────────────── */

const fileDocSchema = z.discriminatedUnion('kind', [
  z.object({ kind: z.literal('markdown'), name: z.string(), md: z.string() }),
  z.object({
    kind: z.literal('excel'),
    name: z.string(),
    sheet: z.string(),
    rows: z.array(z.array(z.string())),
  }),
  z.object({
    kind: z.literal('word'),
    name: z.string(),
    blocks: z.array(
      z.union([
        z.object({ t: z.enum(['h1', 'h2', 'p']), text: z.string() }),
        z.object({ t: z.literal('ul'), items: z.array(z.string()) }),
      ]),
    ),
  }),
  z.object({ kind: z.literal('pdf'), name: z.string(), src: z.string() }),
]);
export type FileDoc = z.infer<typeof fileDocSchema>;
export { fileDocSchema };

export const viewBlockSchema = z.discriminatedUnion('t', [
  z.object({ t: z.literal('callout'), tone: toneSchema, text: z.string() }),
  z.object({
    t: z.literal('kv'),
    title: z.string().optional(),
    items: z.array(
      z.object({
        k: z.string(),
        v: z.string(),
        /** 绑定某工作事项的回填字段:未答显示占位,作答后实时落定 */
        fromItem: z.object({ item: z.string(), field: z.string() }).optional(),
      }),
    ),
  }),
  z.object({
    t: z.literal('badges'),
    title: z.string().optional(),
    items: z.array(z.object({ label: z.string(), on: z.boolean() })),
  }),
  z.object({
    t: z.literal('table'),
    title: z.string().optional(),
    cols: z.array(z.string()),
    rows: z.array(z.array(z.string())),
    editable: z.boolean().optional(),
    editableCols: z.array(z.number().int()).optional(),
    linkDonut: z
      .object({
        col: z.number().int(),
        title: z.string().optional(),
        unit: z.string().optional(),
        map: z.array(z.object({ match: z.string(), label: z.string(), tone: toneSchema })),
      })
      .optional(),
  }),
  z.object({
    t: z.literal('bars'),
    title: z.string().optional(),
    max: z.number().optional(),
    redline: z.number().optional(),
    items: z.array(
      z.object({
        label: z.string(),
        value: z.number(),
        text: z.string().optional(),
        tone: toneSchema.optional(),
      }),
    ),
  }),
  z.object({
    t: z.literal('donut'),
    title: z.string().optional(),
    unit: z.string().optional(),
    items: z.array(z.object({ label: z.string(), value: z.number(), tone: toneSchema })),
  }),
  z.object({
    t: z.literal('mail'),
    dir: z.enum(['in', 'out']),
    statusLabel: z.string().optional(),
    editable: z.boolean().optional(),
    from: z.string(),
    fromAddr: z.string().optional(),
    to: z.string(),
    cc: z.string().optional(),
    subject: z.string(),
    time: z.string(),
    body: z.string(),
    attachments: z
      .array(z.object({ name: z.string(), meta: z.string().optional(), file: fileDocSchema.optional() }))
      .optional(),
  }),
  z.object({
    t: z.literal('cards'),
    title: z.string().optional(),
    items: z.array(
      z.object({
        tag: z.string(),
        icon: z.string().optional(),
        tone: toneSchema.optional(),
        title: z.string(),
        code: z.string().optional(),
        swap: z.object({ from: z.string(), to: z.string(), hint: z.string().optional() }).optional(),
        big: z.string(),
        bigLabel: z.string().optional(),
        meta: z.array(z.object({ k: z.string(), v: z.string() })).optional(),
        note: z.string().optional(),
        from: z.string().optional(),
        time: z.string().optional(),
      }),
    ),
  }),
  z.object({ t: z.literal('waiting'), label: z.string(), hint: z.string().optional() }),
  z.object({
    t: z.literal('files'),
    title: z.string().optional(),
    items: z.array(z.object({ label: z.string(), desc: z.string(), file: fileDocSchema })),
  }),
]);
export type ViewBlock = z.infer<typeof viewBlockSchema>;

/* ── 阶段与过程成果 ───────────────────────────────────────────────────── */

/**
 * 阶段:交互层的统一进展刻度。
 * 引擎层的来源随范式而异(loop = CMMN Stage / 里程碑,flow = 步序位置),前端不感知。
 */
export const stageSchema = z.object({
  id: stageIdSchema,
  label: z.string(),
  round: z.number().int().min(1).optional(),
});
export type Stage = z.infer<typeof stageSchema>;

export const DELIVERABLE_STATES = ['draft', 'pending-acceptance', 'released', 'rejected'] as const;
export const deliverableStateSchema = z.enum(DELIVERABLE_STATES);
export type DeliverableState = z.infer<typeof deliverableStateSchema>;

export const DELIVERABLE_STATE_LABEL: Readonly<Record<DeliverableState, string>> = {
  draft: '草稿',
  'pending-acceptance': '待验收',
  released: '已放行',
  rejected: '已驳回',
};

/** 过程成果:每个成果都要经验收放行才落地(放行门,OS 09) */
export const deliverableSchema = z.object({
  id: deliverableIdSchema,
  stage: stageIdSchema,
  round: z.number().int().min(1).optional(),
  title: z.string(),
  desc: z.string().optional(),
  blocks: z.array(viewBlockSchema),
  state: deliverableStateSchema,
  at: z.string().optional(),
});
export type Deliverable = z.infer<typeof deliverableSchema>;

/* ── 工单两模式(执行 / 验收) ────────────────────────────────────────── */

export const WORK_ORDER_MODES = ['execution', 'acceptance'] as const;
export const workOrderModeSchema = z.enum(WORK_ORDER_MODES);
export type WorkOrderMode = z.infer<typeof workOrderModeSchema>;

export const WORK_ORDER_MODE_LABEL: Readonly<Record<WorkOrderMode, string>> = {
  execution: '执行',
  acceptance: '验收',
};

/** 完成回传:谁、何时、答了什么(回传即留痕) */
export const workDoneSchema = z.object({
  at: z.iso.datetime(),
  by: staffIdSchema,
  result: z.string(),
  values: z.record(z.string(), z.string()).optional(),
});
export type WorkDone = z.infer<typeof workDoneSchema>;

const workOrderBase = {
  id: workOrderIdSchema,
  at: z.iso.datetime(),
  title: z.string(),
  /** 调用必附上下文 —— basis 为空的工单基座必须拒发 */
  basis: basisSchema,
  stage: stageIdSchema.optional(),
  done: workDoneSchema.optional(),
};

/** 执行工单:作业指导书 + 空表单(补全并入此类);落地失败卡是它的系统预置形态 */
export const executionWorkOrderSchema = z.object({
  ...workOrderBase,
  mode: z.literal('execution'),
  /** 系统预置形态标记:landing-failure = 落地失败卡(OS 7.3) */
  preset: z.enum(['landing-failure']).optional(),
  ask: z.string(),
  standard: z.string().optional(),
  steps: z.array(z.string()).optional(),
  /** 报告正文取自哪份过程成果 —— 人要在数据上作判断,数据就得摆在表单旁边 */
  basedOn: deliverableIdSchema.optional(),
  blocks: z.array(viewBlockSchema).optional(),
  fields: z.array(formFieldSchema),
  submitLabel: z.string().optional(),
});
export type ExecutionWorkOrder = z.infer<typeof executionWorkOrderSchema>;

export const acceptanceCriterionCheckSchema = z.object({
  label: z.string(),
  level: acceptanceLevelSchema,
  pass: z.boolean(),
});
export type AcceptanceCriterionCheck = z.infer<typeof acceptanceCriterionCheckSchema>;

/** 待落地动作意向:预检全过才上卡,卡面呈现的即已验证的动作清单(OS 7.3) */
export const actionIntentViewSchema = z.object({
  label: z.string(),
  effect: z.enum(['read', 'write']),
  detail: z.string(),
});
export type ActionIntentView = z.infer<typeof actionIntentViewSchema>;

export const ACTION_EFFECT_LABEL: Readonly<Record<'read' | 'write', string>> = {
  read: '读',
  write: '写',
};

/** 验收工单:AI 拟好的可修订报告 + 判据逐条核对 + 放行三选一 */
export const acceptanceWorkOrderSchema = z.object({
  ...workOrderBase,
  mode: z.literal('acceptance'),
  deliverable: deliverableIdSchema,
  criteria: z.array(acceptanceCriterionCheckSchema),
  actions: z.array(actionIntentViewSchema).optional(),
  /** 报告可修订:字段随成果 schema 渲染,AI 拟值已填 */
  fields: z.array(formFieldSchema).default([]),
  passLabel: z.string().optional(),
});
export type AcceptanceWorkOrder = z.infer<typeof acceptanceWorkOrderSchema>;

export const workOrderSchema = z.discriminatedUnion('mode', [
  executionWorkOrderSchema,
  acceptanceWorkOrderSchema,
]);
export type WorkOrder = z.infer<typeof workOrderSchema>;

/* ── 对话卡族(决策 / 补全 / 评价) ──────────────────────────────────── */

/** AI 发言的类型标记 —— 对话区可分辨:结论 / 指导 / 判据 */
export const AI_TAGS = ['conclusion', 'guidance', 'criterion'] as const;
export const aiTagSchema = z.enum(AI_TAGS);
export type AiTag = z.infer<typeof aiTagSchema>;

export const AI_TAG_LABEL: Readonly<Record<AiTag, string>> = {
  conclusion: '结论',
  guidance: '指导',
  criterion: '判据',
};

const chatBase = { id: cardIdSchema, at: z.iso.datetime() };

/** 决策卡:分支条件选择表;含自定义收尾项 */
export const decisionCardSchema = z.object({
  ...chatBase,
  k: z.literal('decision'),
  ask: z.string(),
  basis: basisSchema,
  recommend: z.string().optional(),
  options: z.array(
    z.object({
      value: z.string(),
      label: z.string(),
      detail: z.string().optional(),
      consequence: z.string().optional(),
      recommended: z.boolean().optional(),
    }),
  ),
  /** 自定义收尾项:人可给出选项之外的处置(附理由) */
  allowCustom: z.boolean().default(false),
  chosen: z
    .object({
      value: z.string(),
      at: z.iso.datetime(),
      by: staffIdSchema,
      note: z.string().optional(),
    })
    .optional(),
});
export type DecisionCard = z.infer<typeof decisionCardSchema>;

/** 补全卡:就地要几个小信息;含「没法填」旁路 —— 两条路必走其一 */
export const elicitationCardSchema = z.object({
  ...chatBase,
  k: z.literal('elicitation'),
  ask: z.string(),
  basis: basisSchema.optional(),
  fields: z.array(
    z.object({ key: z.string(), label: z.string(), placeholder: z.string().optional() }),
  ),
  done: z
    .object({
      at: z.iso.datetime(),
      by: staffIdSchema,
      values: z.record(z.string(), z.string()),
      /** 没法填的理由 —— 人让 AI 迭代一轮需求 */
      reason: z.string().optional(),
    })
    .optional(),
});
export type ElicitationCard = z.infer<typeof elicitationCardSchema>;

/** 评价卡:任务评价(评分 1–5 + 改进建议) */
export const ratingCardSchema = z.object({
  ...chatBase,
  k: z.literal('rating'),
  ask: z.string(),
  basis: basisSchema.optional(),
  done: z
    .object({
      at: z.iso.datetime(),
      by: staffIdSchema,
      score: z.number().int().min(1).max(5),
      note: z.string().optional(),
    })
    .optional(),
});
export type RatingCard = z.infer<typeof ratingCardSchema>;

export const chatCardSchema = z.discriminatedUnion('k', [
  decisionCardSchema,
  elicitationCardSchema,
  ratingCardSchema,
]);
export type ChatCard = z.infer<typeof chatCardSchema>;

/* ── 对话流消息 ───────────────────────────────────────────────────────── */

export const chatMessageSchema = z.discriminatedUnion('k', [
  z.object({
    ...chatBase,
    k: z.literal('ai'),
    text: z.string(),
    tag: aiTagSchema.optional(),
    /** 指涉的工单 id —— 对话区点击即让视图区定位到那张工单 */
    ref: workOrderIdSchema.optional(),
  }),
  z.object({ ...chatBase, k: z.literal('human'), text: z.string(), by: staffIdSchema }),
  z.object({
    ...chatBase,
    k: z.literal('system'),
    type: z.enum(['data', 'time', 'human', 'control']),
    text: z.string(),
  }),
  decisionCardSchema,
  elicitationCardSchema,
  ratingCardSchema,
]);
export type ChatMessage = z.infer<typeof chatMessageSchema>;

/* ── 回传协议(前端 → 后端;后端以同一 schema 校验,§9.2) ───────────── */

export const workOrderReplySchema = z.discriminatedUnion('mode', [
  z.object({
    mode: z.literal('execution'),
    workOrderId: workOrderIdSchema,
    values: z.record(z.string(), z.string()),
  }),
  z.object({
    mode: z.literal('acceptance'),
    workOrderId: workOrderIdSchema,
    /** 三选一:放行通过 / 驳回重做 / 驳回迭代 —— 驳回必附意见 */
    verdict: z.union([z.literal('pass'), rejectionKindSchema]),
    /** 报告的人工修订(可空 = 全盘采信 AI 拟值) */
    values: z.record(z.string(), z.string()).default({}),
    comment: z.string().optional(),
    /** 选择组的出口选择:恰发一口,随放行一并确认(AM 1.2) */
    selectedPorts: z.record(z.string(), z.string()).default({}),
  }),
]);
export type WorkOrderReply = z.infer<typeof workOrderReplySchema>;

export const chatCardReplySchema = z.discriminatedUnion('k', [
  z.object({
    k: z.literal('decision'),
    cardId: cardIdSchema,
    value: z.string(),
    note: z.string().optional(),
  }),
  z.object({
    k: z.literal('elicitation'),
    cardId: cardIdSchema,
    values: z.record(z.string(), z.string()).default({}),
    /** 「没法填」旁路 */
    reason: z.string().optional(),
  }),
  z.object({
    k: z.literal('rating'),
    cardId: cardIdSchema,
    score: z.number().int().min(1).max(5),
    note: z.string().optional(),
  }),
]);
export type ChatCardReply = z.infer<typeof chatCardReplySchema>;

/**
 * 驳回必附意见 —— 三规矩之一的机检形态(OS 05)。
 * 后端回传校验与前端提交校验共用本函数。
 */
export function rejectionNeedsComment(reply: WorkOrderReply): boolean {
  return reply.mode === 'acceptance' && reply.verdict !== 'pass' && !reply.comment?.trim();
}

/** 补全卡两条路必走其一:要么填值,要么给「没法填」的理由 */
export function elicitationReplyIsEmpty(reply: ChatCardReply): boolean {
  if (reply.k !== 'elicitation') return false;
  const hasValue = Object.values(reply.values).some((v) => v.trim() !== '');
  return !hasValue && !reply.reason?.trim();
}