/** 枚举的中文显示名由前端维护（api-design §1）；不认识的枚举值原样显示，不报错。 */
import type { Schemas } from "@bid-doctor/api-client";

type Dict<K extends string> = Readonly<Record<K, string>>;
const pick = <K extends string>(d: Dict<K>, k: string | null | undefined): string => (k ? (d as Record<string, string>)[k] ?? k : "");

export const PROJECT_STATUS: Dict<Schemas["ProjectStatus"]> = {
  tracking: "跟进中",
  drafting: "编制中",
  checked: "已检查",
  submitted: "已递交",
  archived: "已归档",
};
export const projectStatus = (s: string) => pick(PROJECT_STATUS, s);

export const LEGAL_REGIME: Dict<Schemas["LegalRegime"]> = {
  gov_procurement: "政府采购",
  tendering: "招标投标",
  unknown: "法律体系待识别",
};
export const legalRegime = (s: string) => pick(LEGAL_REGIME, s);

export const CATEGORY_ORDER: readonly Schemas["Category"][] = [
  "qualification",
  "invalidity",
  "scoring",
  "schedule",
  "tech_param",
  "format_doc",
  "price",
];
export const CATEGORY: Dict<Schemas["Category"]> = {
  qualification: "资格条件",
  invalidity: "无效条款",
  scoring: "评分办法",
  schedule: "日期与递交",
  tech_param: "技术参数",
  format_doc: "格式文件",
  price: "报价",
};
export const category = (s: string) => pick(CATEGORY, s);

/** 界面显示为 ★ / ▲ / 一般（一般不显示符号） */
export const IMPORTANCE_MARK: Dict<Schemas["Importance"]> = { substantive: "★", important: "▲", normal: "" };
export const IMPORTANCE_NAME: Dict<Schemas["Importance"]> = { substantive: "实质性要求", important: "重要", normal: "一般" };

export const PENDING_REASON: Dict<Schemas["PendingReason"]> = {
  no_citation: "没找到可靠出处",
  low_confidence: "把握不大",
  verify_failed: "出处核对没通过",
  marker_uncovered: "标注句没被提取覆盖，由规则补出",
  absent_in_rerun: "重新解析时没再出现",
};
export const pendingReason = (s: string | null | undefined) => pick(PENDING_REASON, s);

/** 没通过校验的具体原因（服务端 checklist/extract.py 的 FAILURES，记在 ai_values.failures） */
export const FAILURE: Record<string, string> = {
  evidence_missing: "没有给出处",
  sid_format: "句子编号格式不对",
  sid_unknown: "句子编号对不上",
  quote_too_short: "引文太短",
  quote_not_original: "引文和原文不一致",
  basis_unmatched: "原文里找不到实质性条款的依据",
  value_unverified: "取值在原文里找不到",
  points_unverified: "分值在原文里找不到",
  date_unverified: "日期时间在原文里找不到",
  amount_unverified: "金额在原文里找不到",
  placeholder_value: "原文这里是待填写的空白",
  marker_uncovered: "",
};
/** 待确认条目的具体原因，最多列两条；和 pending_reason 重复的不再写 */
export function failureText(aiValues: unknown): string {
  const fs = (aiValues as { failures?: unknown } | null)?.failures;
  if (!Array.isArray(fs)) return "";
  return fs
    .map((f) => FAILURE[String(f)] ?? "")
    .filter(Boolean)
    .slice(0, 2)
    .join("、");
}

/* ---------- 修改记录（审计事件） ---------- */
export const HISTORY_ACTION: Record<string, string> = {
  "checklist_item.extract": "AI 提取",
  "checklist_item.create": "人工添加",
  "checklist_item.update": "修改",
  "checklist_item.accept": "采纳",
  "checklist_item.set_citations": "更换出处",
  "checklist_item.discard": "丢弃",
  "checklist_item.delete": "删除",
  "checklist_item.restore": "恢复",
};
export const historyAction = (s: string) => HISTORY_ACTION[s] ?? s;
export const HISTORY_FIELD: Record<string, string> = {
  title: "要求",
  categories: "分类",
  importance: "重要性",
  evidence_required: "证明材料",
  requirement_text: "原文",
  lot_id: "分包",
  spec: "取值",
  citation_ids: "出处",
  zone: "区域",
  no_citation_ack: "人工确认、无出处",
};
/** 修改记录里一个值的显示：分类、重要性、区域翻成中文，出处只写条数 */
export function historyValue(field: string, v: unknown): string {
  if (v === null || v === undefined || v === "") return "";
  if (field === "categories" && Array.isArray(v)) return v.map((c) => category(String(c))).join("、");
  if (field === "importance") return pick(IMPORTANCE_NAME, String(v));
  if (field === "zone") return v === "pending" ? "待确认" : "正式清单";
  if (field === "citation_ids" && Array.isArray(v)) return v.length ? `${v.length} 处` : "无";
  if (field === "no_citation_ack") return v ? "是" : "否";
  return typeof v === "string" ? v : JSON.stringify(v);
}

export const MARKER: Dict<Schemas["MarkingRule"]["marker"]> = {
  star: "★",
  asterisk: "＊",
  triangle: "▲",
  italic_underline: "斜体加下划线",
  bold: "加粗",
  underline: "下划线",
  keyword: "关键词",
};

export const QUOTA_UNIT: Dict<Schemas["QuotaUnit"]> = { parse: "解析", check: "检查", generate: "生成", dedupe: "查重" };
export const quotaUnit = (s: string) => pick(QUOTA_UNIT, s);

export const PLAN_KEY: Dict<Schemas["PlanCode"]> = { free: "free", pro: "pro", enterprise: "ent" };

/** 工作台「下一步」。target 为空表示骨架阶段还没有对应页面，只显示文字。 */
export const NEXT_ACTION: Dict<Schemas["NextAction"]> = {
  upload_tender: "上传招标文件",
  wait_parse: "查看解析进度",
  select_lots: "选择所投的包",
  confirm_checklist: "确认清单",
  upload_bid: "上传投标文件",
  run_check: "发起检查",
  handle_fatal: "处理致命问题",
  export_report: "导出检查报告",
  archive: "归档项目",
  none: "查看项目",
};
export const nextAction = (s: string) => pick(NEXT_ACTION, s);

/** 解析阶段（§7.11）：服务端的 8 个 stage 合成界面上的 5 步 */
export const PARSE_STEPS: readonly { label: string; stages: readonly string[] }[] = [
  { label: "识别文件格式", stages: ["detect", "convert"] },
  { label: "提取文字", stages: ["text_layer", "ocr"] },
  { label: "识别章节结构", stages: ["structure"] },
  { label: "提取清单", stages: ["extract"] },
  { label: "核对出处", stages: ["verify", "merge"] },
];
export const parseStepIndex = (stage: string | null | undefined) =>
  stage ? PARSE_STEPS.findIndex((s) => s.stages.includes(stage)) : -1;

/** 检查阶段：服务端的 6 个 stage 合成界面上的 4 步 */
export const CHECK_STEPS: readonly { label: string; stages: readonly string[] }[] = [
  { label: "读取投标文件", stages: ["prepare_bid"] },
  { label: "逐条找响应", stages: ["match"] },
  { label: "核对出处", stages: ["rules", "verify"] },
  { label: "沿用处理状态、汇总", stages: ["carry_over", "summarize"] },
];
export const checkStepIndex = (stage: string | null | undefined) =>
  stage ? CHECK_STEPS.findIndex((s) => s.stages.includes(stage)) : -1;

export const VOLUME_KIND: Dict<Schemas["VolumeKind"]> = {
  whole: "整本",
  qualification: "资格证明",
  commercial: "商务",
  technical: "技术",
  price: "报价",
  other: "其他",
};
export const VOLUME_KINDS = Object.keys(VOLUME_KIND) as Schemas["VolumeKind"][];

/** 级别（§7.5）：样式类沿用设计规范的 fatal / major / hint */
export const SEVERITY: Dict<Schemas["Severity"]> = { fatal: "致命", important: "重要", hint: "提示" };
export const SEVERITY_CLASS: Dict<Schemas["Severity"]> = { fatal: "fatal", important: "major", hint: "hint" };
export const FINDING_ACTION: Dict<Schemas["FindingStatus"]> = {
  pending: "待处理",
  confirmed_ok: "确认无误",
  modified: "已修改",
  ignored: "已忽略",
};

export const READY_TIP = "只表示致命问题都已处理，不代表投标文件没有问题。";

export const QUALIFICATION_KIND_ORDER: readonly Schemas["QualificationKind"][] = ["certificate", "system_cert", "software_copyright", "other"];
export const QUALIFICATION_KIND: Dict<Schemas["QualificationKind"]> = {
  certificate: "资质证书",
  system_cert: "体系认证",
  software_copyright: "软件著作权",
  other: "其他",
};
export const qualificationKind = (s: string) => pick(QUALIFICATION_KIND, s);

/* ---------- 项目基本信息（FR-M2-03） ---------- */
export const FIELD_LABEL: Dict<Schemas["ProjectFieldKey"]> = {
  name: "项目名称",
  code: "项目编号",
  purchaser: "采购人 / 招标人",
  agency: "代理机构",
  procurement_method: "采购方式",
  legal_regime: "法律体系",
  budget_total: "预算金额",
  ceiling_total: "最高限价",
  eval_method: "评标方法",
  accept_consortium: "接受联合体",
  accept_imported: "接受进口产品",
  sme_only: "专门面向中小企业",
  deadline_at: "投标截止时间",
};
export const FIELD_ORDER = Object.keys(FIELD_LABEL) as Schemas["ProjectFieldKey"][];
export const MONEY_FIELDS: ReadonlySet<string> = new Set(["budget_total", "ceiling_total"]);
export const BOOL_FIELDS: ReadonlySet<string> = new Set(["accept_consortium", "accept_imported", "sme_only"]);

/** 金额（元，字符串）显示成「286.00 万元」；不到一万的写元。数字来自招标文件原文，不是报价建议（红线 6） */
export function fmtYuan(v: string | null | undefined): string {
  if (v == null || v === "") return "";
  const n = Number(v);
  if (!Number.isFinite(n)) return v;
  return n >= 10000 ? `${(n / 10000).toLocaleString("zh-CN", { minimumFractionDigits: 2, maximumFractionDigits: 2 })} 万元` : `${n.toLocaleString("zh-CN")} 元`;
}

/** 字段值的显示文字；没有值时为空串 */
export function fieldText(key: string, v: unknown): string {
  if (v == null || v === "") return "";
  if (MONEY_FIELDS.has(key)) return fmtYuan(String(v));
  if (BOOL_FIELDS.has(key)) return v ? "是" : "否";
  if (key === "legal_regime") return legalRegime(String(v));
  if (key === "deadline_at") return fmtDateTimeFull(String(v));
  return String(v);
}

/* ---------- 时间 ---------- */
const pad = (n: number) => String(n).padStart(2, "0");
export const fmtDate = (d: Date) => `${d.getMonth() + 1}月${d.getDate()}日`;
export const fmtTime = (d: Date) => `${pad(d.getHours())}:${pad(d.getMinutes())}`;
export const fmtDateTime = (iso: string) => {
  const d = new Date(iso);
  return `${fmtDate(d)} ${fmtTime(d)}`;
};
/** 日期（YYYY-MM-DD，无时区）显示成「2026年11月15日」 */
export const fmtDay = (day: string) => {
  const [y, m, d] = day.split("-").map(Number);
  return `${y}年${m}月${d}日`;
};
/** 近期的日期（投标截止日）省掉年份，显示成「11月20日」 */
export const fmtMonthDay = (day: string) => {
  const [, m, d] = day.split("-").map(Number);
  return `${m}月${d}日`;
};
/**
 * 键入的日期整理成 YYYY-MM-DD（设计规范 Q10：可直接键入）。接受 2026-11-20、2026/11/20、2026.11.20、20261120、
 * 2026年11月20日；空串返回 ""，写错或不存在的日期返回 null。
 */
export function parseDay(text: string): string | null {
  const t = text.trim();
  if (!t) return "";
  const m = /^(\d{4})(?:[-/.年]\s*(\d{1,2})[-/.月]\s*(\d{1,2})日?|(\d{2})(\d{2}))$/.exec(t);
  if (!m) return null;
  const [y, mo, d] = [Number(m[1]), Number(m[2] ?? m[4]), Number(m[3] ?? m[5])];
  const dt = new Date(Date.UTC(y, mo - 1, d));
  if (dt.getUTCFullYear() !== y || dt.getUTCMonth() !== mo - 1 || dt.getUTCDate() !== d) return null;
  return `${y}-${pad(mo)}-${pad(d)}`;
}
/** 完整的日期时间：「2026年11月20日 09:30」（北京时间） */
export function fmtDateTimeFull(iso: string): string {
  const d = new Date(iso);
  const parts = new Intl.DateTimeFormat("zh-CN", {
    timeZone: "Asia/Shanghai",
    year: "numeric",
    month: "numeric",
    day: "numeric",
    hour: "2-digit",
    minute: "2-digit",
    hour12: false,
  }).formatToParts(d);
  const get = (t: string) => parts.find((x) => x.type === t)?.value ?? "";
  return `${get("year")}年${get("month")}月${get("day")}日 ${get("hour")}:${get("minute")}`;
}
export const fmtDuration = (ms: number) => {
  const s = Math.max(0, Math.round(ms / 1000));
  return { min: Math.floor(s / 60), sec: pad(s % 60) };
};

/** 投标截止的两行显示和颜色类（components.css 的 .due-*） */
export function deadline(iso: string | null | undefined, now = new Date()): { main: string; sub: string; cls: string } | null {
  if (!iso) return null;
  const d = new Date(iso);
  const ms = d.getTime() - now.getTime();
  const when = `${fmtDate(d)} ${fmtTime(d)}`;
  if (ms < 0) return { main: "已截止", sub: when, cls: "due-past" };
  const hours = Math.floor(ms / 3_600_000);
  const days = Math.floor(hours / 24);
  if (d.toDateString() === now.toDateString()) return { main: `今天 ${fmtTime(d)} 截止`, sub: `剩 ${hours} 小时`, cls: "due-today" };
  if (hours <= 72) return { main: `剩 ${days} 天 ${hours % 24} 小时`, sub: when, cls: "due-soon" };
  return { main: `剩 ${days} 天`, sub: when, cls: "" };
}

export function extOf(name: string): string {
  const m = /\.([a-z0-9]{1,5})$/i.exec(name);
  return m?.[1] ? m[1].toUpperCase() : "文件";
}

export function fmtSize(bytes: number): string {
  if (bytes < 1024 * 1024) return `${Math.max(1, Math.round(bytes / 1024))} KB`;
  return `${(bytes / 1024 / 1024).toFixed(1)} MB`;
}

/* ---------- 清单项的结构化取值（ItemSpec，openapi.yaml）：只把原文里有的值整理出来显示，不推测 ---------- */
const PART: Record<string, string> = { price: "价格分", technical: "技术分", commercial: "商务分" };
const QUAL_KIND: Record<string, string> = { general: "通用资格", specific: "特定资格", credit: "信用要求" };
const OP: Record<string, string> = { ">=": "≥", "<=": "≤", "=": "=", contains: "包含", supports: "支持" };
const DATE_KIND: Record<string, string> = {
  question_deadline: "提疑截止",
  bid_deadline: "投标截止",
  opening: "开标",
  deposit_deadline: "保证金截止",
  validity: "有效期",
};
const SUBMISSION: Record<string, string> = { electronic: "电子递交", paper: "纸质递交", ca_encrypted: "CA 加密", mixed: "电子 + 纸质" };

type Spec = Record<string, Record<string, unknown> | undefined>;
const str = (v: unknown): string => (v === null || v === undefined ? "" : String(v));

export function specFacts(spec: unknown): string[] {
  const s = (spec ?? {}) as Spec;
  const out: string[] = [];
  const q = s.qualification;
  if (q && QUAL_KIND[str(q.kind)]) out.push(QUAL_KIND[str(q.kind)]!);
  const sc = s.scoring;
  if (sc) {
    if (sc.points) out.push(`分值 ${str(sc.points)}`);
    if (PART[str(sc.part)]) out.push(PART[str(sc.part)]!);
  }
  const t = s.tech_param;
  if (t && t.value) out.push([str(t.param), OP[str(t.op)] ?? "", `${str(t.value)}${str(t.unit)}`].filter(Boolean).join(" "));
  const d = s.schedule;
  if (d) {
    if (d.at) out.push(`${DATE_KIND[str(d.date_kind)] ?? "时间"} ${fmtDateTime(str(d.at))}`);
    else if (DATE_KIND[str(d.date_kind)]) out.push(DATE_KIND[str(d.date_kind)]!);
    if (d.deposit_amount) out.push(`保证金 ${str(d.deposit_amount)}`);
    if (SUBMISSION[str(d.submission_mode)]) out.push(SUBMISSION[str(d.submission_mode)]!);
  }
  return out;
}