/**
 * Semantic badges for enum-valued frontmatter fields.
 *  - ConfidenceBand:    high/medium/low/speculation
 *  - ClassificationLevel: UNCLASSIFIED/CUI/CONFIDENTIAL/SECRET/TOP SECRET (+caveats)
 *  - EnrichmentStatus:  deep/shallow/none
 *  - ContentClass:      11 content_classification enum values
 *  - PageType:          cover/body/signature/... 14 types
 *  - Generic chip with optional icon
 */
import {
  Eye, EyeOff, FileText, FileImage, FileWarning, ShieldAlert, ShieldCheck,
  Check, Clock, AlertTriangle, Stamp, PenSquare, Table2, Map as MapIcon,
  Image as ImageIcon, Calendar, MapPin, Tag, Network, FileSearch, Globe,
} from "lucide-react";
import type {
  ConfidenceBand, ClassificationLevel, EnrichmentStatus, ContentClass,
} from "@/lib/fm-types";

/* ── ConfidenceBand ─────────────────────────────────────────── */

const CONF_STYLES: Record<ConfidenceBand, string> = {
  high:        "bg-[rgba(0,255,156,0.12)] text-[#00ff9c] border-[#00ff9c]",
  medium:      "bg-[rgba(127,219,255,0.10)] text-[#7fdbff] border-[#7fdbff]",
  low:         "bg-[rgba(245,197,66,0.10)] text-[#f5c542] border-[#f5c542]",
  speculation: "bg-[rgba(187,107,217,0.10)] text-[#bb6bd9] border-[#bb6bd9]",
};

export function FmConfidence({ band }: { band?: ConfidenceBand }) {
  if (!band) return null;
  return (
    <span className={`inline-flex items-center gap-1 font-mono text-[10px] uppercase tracking-widest px-1.5 py-0.5 rounded border ${CONF_STYLES[band]}`}>
      ▎ {band}
    </span>
  );
}

/* ── ClassificationLevel ────────────────────────────────────── */

const CLASS_STYLES: Record<ClassificationLevel, string> = {
  "UNCLASSIFIED": "bg-[rgba(63,222,106,0.10)] text-[#3fde6a] border-[#3fde6a]",
  "CUI":          "bg-[rgba(127,219,255,0.10)] text-[#7fdbff] border-[#7fdbff]",
  "CONFIDENTIAL": "bg-[rgba(245,197,66,0.10)] text-[#f5c542] border-[#f5c542]",
  "SECRET":       "bg-[rgba(255,138,77,0.12)] text-[#ff8a4d] border-[#ff8a4d]",
  "TOP SECRET":   "bg-[rgba(255,51,68,0.15)] text-[#ff3344] border-[#ff3344] font-bold",
};

export function FmClassification({ level, caveats }: { level?: ClassificationLevel; caveats?: string[] }) {
  if (!level) return null;
  return (
    <span className={`inline-flex items-center gap-1 font-mono text-[10px] uppercase tracking-widest px-1.5 py-0.5 rounded border ${CLASS_STYLES[level] ?? CLASS_STYLES.UNCLASSIFIED}`}>
      <ShieldAlert size={10} /> {level}
      {caveats && caveats.length > 0 && <span> // {caveats.join(", ")}</span>}
    </span>
  );
}

/* ── EnrichmentStatus ──────────────────────────────────────── */

const ENR_STYLES: Record<EnrichmentStatus, { cls: string; icon: React.ReactNode }> = {
  deep:    { cls: "bg-[rgba(0,255,156,0.12)] text-[#00ff9c] border-[#00ff9c]", icon: <ShieldCheck size={10} /> },
  shallow: { cls: "bg-[rgba(127,219,255,0.10)] text-[#7fdbff] border-[#7fdbff]", icon: <Eye size={10} /> },
  none:    { cls: "bg-[rgba(90,102,120,0.10)] text-[#5a6678] border-[#5a6678]", icon: <EyeOff size={10} /> },
};

export function FmEnrichmentBadge({ status }: { status?: EnrichmentStatus }) {
  if (!status) return null;
  const s = ENR_STYLES[status];
  return (
    <span className={`inline-flex items-center gap-1 font-mono text-[10px] uppercase tracking-widest px-1.5 py-0.5 rounded border ${s.cls}`}>
      {s.icon} {status}
    </span>
  );
}

/* ── ContentClass ──────────────────────────────────────────── */

const CONTENT_ICON: Record<ContentClass, React.ReactNode> = {
  "text-only":          <FileText size={10} />,
  "contains-photos":    <ImageIcon size={10} />,
  "contains-sketches":  <PenSquare size={10} />,
  "contains-diagrams":  <Network size={10} />,
  "contains-maps":      <MapIcon size={10} />,
  "contains-tables":    <Table2 size={10} />,
  "contains-signatures":<PenSquare size={10} />,
  "contains-stamps":    <Stamp size={10} />,
  "redaction-heavy":    <FileWarning size={10} />,
  "mixed":              <Tag size={10} />,
  "blank":              <FileText size={10} />,
};

export function FmContentChip({ kind }: { kind: ContentClass }) {
  const icon = CONTENT_ICON[kind] ?? <Tag size={10} />;
  return (
    <span className="inline-flex items-center gap-1 font-mono text-[10px] tracking-wide bg-[rgba(127,219,255,0.06)] text-[#7fdbff] border border-[rgba(127,219,255,0.32)] rounded px-1.5 py-0.5">
      {icon} {kind}
    </span>
  );
}

/* ── PageType ──────────────────────────────────────────────── */

export function FmPageTypeChip({ type }: { type?: string }) {
  if (!type) return null;
  const accent =
    type === "redaction-heavy" ? "text-[#ff3344] border-[#ff3344]" :
    type === "signature"       ? "text-[#bb6bd9] border-[#bb6bd9]" :
    type === "table-page"      ? "text-[#1e9eb5] border-[#1e9eb5]" :
    type === "map"             ? "text-[#3fde6a] border-[#3fde6a]" :
    type === "photo"           ? "text-[#ffeb99] border-[#ffeb99]" :
    type === "sketch"          ? "text-[#ff8a4d] border-[#ff8a4d]" :
    type === "cover"           ? "text-[#f5c542] border-[#f5c542]" :
    type === "blank"           ? "text-[#5a6678] border-[#5a6678]" :
                                  "text-[#7fdbff] border-[#7fdbff]";
  return (
    <span className={`inline-flex items-center gap-1 font-mono text-[10px] uppercase tracking-widest border rounded px-1.5 py-0.5 ${accent}`}>
      <FileSearch size={10} /> {type}
    </span>
  );
}

/* ── Generic chips ─────────────────────────────────────────── */

export function FmChip({ icon, label, color = "cyan" }: {
  icon?: React.ReactNode;
  label: React.ReactNode;
  color?: "cyan" | "amber" | "green" | "red" | "violet" | "soft";
}) {
  const cls =
    color === "amber"  ? "text-[#f5c542] border-[rgba(245,197,66,0.32)] bg-[rgba(245,197,66,0.06)]" :
    color === "green"  ? "text-[#3fde6a] border-[rgba(63,222,106,0.32)] bg-[rgba(63,222,106,0.06)]" :
    color === "red"    ? "text-[#ff3344] border-[rgba(255,51,68,0.32)] bg-[rgba(255,51,68,0.06)]" :
    color === "violet" ? "text-[#bb6bd9] border-[rgba(187,107,217,0.32)] bg-[rgba(187,107,217,0.06)]" :
    color === "soft"   ? "text-[#8896aa] border-[rgba(136,150,170,0.32)] bg-[rgba(136,150,170,0.04)]" :
                         "text-[#7fdbff] border-[rgba(127,219,255,0.32)] bg-[rgba(127,219,255,0.06)]";
  return (
    <span className={`inline-flex items-center gap-1 font-mono text-[10px] tracking-wide border rounded px-1.5 py-0.5 ${cls}`}>
      {icon}
      <span>{label}</span>
    </span>
  );
}

export function FmStat({ icon, label, value, color = "cyan" }: {
  icon?: React.ReactNode;
  label: string;
  value: React.ReactNode;
  color?: "cyan" | "amber" | "green" | "red" | "violet" | "soft";
}) {
  const c =
    color === "amber"  ? "text-[#f5c542]" :
    color === "green"  ? "text-[#3fde6a]" :
    color === "red"    ? "text-[#ff3344]" :
    color === "violet" ? "text-[#bb6bd9]" :
    color === "soft"   ? "text-[#8896aa]" :
                         "text-[#7fdbff]";
  return (
    <div className="inline-flex flex-col items-start gap-0.5 px-2.5 py-1.5 border border-[rgba(0,255,156,0.12)] bg-[#060a13] rounded">
      <span className="font-mono text-[9px] uppercase tracking-widest text-[#5a6678] inline-flex items-center gap-1">
        {icon} {label}
      </span>
      <span className={`font-mono text-sm font-semibold ${c}`}>{value}</span>
    </div>
  );
}

/* ── Language code ─────────────────────────────────────────── */

const LANG_FLAG: Record<string, string> = {
  en: "🇬🇧", pt: "🇧🇷", es: "🇪🇸", fr: "🇫🇷", de: "🇩🇪", ru: "🇷🇺", unknown: "❓",
};

export function FmLanguageChip({ code }: { code?: string }) {
  if (!code) return null;
  return (
    <span className="inline-flex items-center gap-1 font-mono text-[10px] uppercase tracking-widest text-[#8896aa] border border-[rgba(136,150,170,0.32)] rounded px-1.5 py-0.5">
      <Globe size={10} /> {LANG_FLAG[code] ?? "🌐"} {code}
    </span>
  );
}

/* ── Date ──────────────────────────────────────────────────── */

export function FmDate({ value }: { value?: string }) {
  if (!value) return null;
  return (
    <span className="inline-flex items-center gap-1 font-mono text-[10px] text-[#8896aa]">
      <Calendar size={10} /> {value}
    </span>
  );
}

/* ── Coordinates ───────────────────────────────────────────── */

export function FmCoordinates({ lat, lon, raw }: { lat?: number | null; lon?: number | null; raw?: string }) {
  const ll = (lat !== null && lat !== undefined && lon !== null && lon !== undefined)
    ? `${lat.toFixed(5)}, ${lon.toFixed(5)}`
    : raw;
  if (!ll) return null;
  const href = (lat !== null && lat !== undefined && lon !== null && lon !== undefined)
    ? `https://www.openstreetmap.org/?mlat=${lat}&mlon=${lon}#map=8/${lat}/${lon}`
    : undefined;
  const inner = (
    <span className="inline-flex items-center gap-1 font-mono text-[10px] text-[#3fde6a] border border-[rgba(63,222,106,0.32)] bg-[rgba(63,222,106,0.06)] rounded px-1.5 py-0.5">
      <MapPin size={10} /> {ll}
    </span>
  );
  return href
    ? <a href={href} target="_blank" rel="noopener noreferrer" className="no-underline">{inner}</a>
    : inner;
}

/* ── Quality dot (0..1) ────────────────────────────────────── */

export function FmQualityDot({ value, label }: { value?: number; label?: string }) {
  if (value === undefined || value === null) return null;
  const pct = Math.round(value * 100);
  const c =
    pct >= 90 ? "text-[#00ff9c]" :
    pct >= 75 ? "text-[#7fdbff]" :
    pct >= 50 ? "text-[#f5c542]" :
                "text-[#ff3344]";
  return (
    <span className={`inline-flex items-center gap-1 font-mono text-[10px] ${c}`}>
      {label && <span className="text-[#5a6678]">{label}</span>}
      <Check size={10} /> {pct}%
    </span>
  );
}

/* ── Generic flag chip ─────────────────────────────────────── */

export function FmFlag({ flag }: { flag: string }) {
  const isWarn = /low|miss|fail|heavy|rotat/i.test(flag);
  return (
    <span className={`inline-flex items-center gap-1 font-mono text-[10px] tracking-wide rounded px-1.5 py-0.5 border
      ${isWarn ? "text-[#f5c542] border-[rgba(245,197,66,0.32)] bg-[rgba(245,197,66,0.06)]"
               : "text-[#5a6678] border-[rgba(136,150,170,0.32)]"}`}>
      <AlertTriangle size={10} /> {flag}
    </span>
  );
}

export function FmTimestamp({ value, label }: { value?: string; label?: string }) {
  if (!value) return null;
  return (
    <span className="inline-flex items-center gap-1 font-mono text-[9px] text-[#5a6678]">
      <Clock size={9} />
      {label && <span>{label}:</span>}
      {value.replace("T", " ").replace("Z", " UTC")}
    </span>
  );
}