import { Shield, ShieldAlert, ShieldCheck, ShieldX, Info } from "lucide-react";
import type { InjectionResult, InjectionPattern } from "@/lib/api";

interface InjectionPanelProps {
  result: InjectionResult | null;
  onJumpToLine?: (line: number) => void;
}

const RISK_CONFIG = {
  critical: {
    label: "CRITICAL",
    color: "oklch(0.60 0.20 25)",
    bg: "oklch(0.60 0.20 25 / 0.12)",
    border: "oklch(0.60 0.20 25 / 0.35)",
    icon: ShieldX,
  },
  high: {
    label: "HIGH",
    color: "oklch(0.72 0.18 55)",
    bg: "oklch(0.72 0.18 55 / 0.12)",
    border: "oklch(0.72 0.18 55 / 0.35)",
    icon: ShieldAlert,
  },
  medium: {
    label: "MEDIUM",
    color: "oklch(0.78 0.18 90)",
    bg: "oklch(0.78 0.18 90 / 0.12)",
    border: "oklch(0.78 0.18 90 / 0.35)",
    icon: ShieldAlert,
  },
  low: {
    label: "LOW",
    color: "oklch(0.68 0.16 210)",
    bg: "oklch(0.68 0.16 210 / 0.12)",
    border: "oklch(0.68 0.16 210 / 0.35)",
    icon: Shield,
  },
};

function RiskMeter({ score }: { score: number }) {
  const color =
    score >= 75 ? "oklch(0.60 0.20 25)" :
    score >= 50 ? "oklch(0.72 0.18 55)" :
    score >= 25 ? "oklch(0.78 0.18 90)" :
    "oklch(0.72 0.17 160)";

  return (
    <div className="flex items-center gap-3">
      <div className="flex-1 h-1.5 rounded-full bg-[oklch(0.20_0.010_264)] overflow-hidden">
        <div
          className="h-full rounded-full transition-all duration-500"
          style={{ width: `${score}%`, background: color }}
        />
      </div>
      <span className="text-sm font-mono font-semibold w-12 text-right" style={{ color }}>
        {score}/100
      </span>
    </div>
  );
}

function PatternCard({ pattern, onJumpToLine }: { pattern: InjectionPattern; onJumpToLine?: (line: number) => void }) {
  const cfg = RISK_CONFIG[pattern.risk_level] ?? RISK_CONFIG.low;
  const Icon = cfg.icon;

  return (
    <div
      className="mx-3 mb-2 rounded-lg border overflow-hidden"
      style={{ borderColor: cfg.border, background: cfg.bg }}
    >
      {/* Header */}
      <div className="flex items-center gap-2 px-3 py-2 border-b" style={{ borderColor: cfg.border }}>
        <Icon size={14} style={{ color: cfg.color }} className="flex-shrink-0" />
        <span className="text-xs font-semibold flex-1" style={{ color: cfg.color }}>
          {pattern.description}
        </span>
        <span
          className="text-[10px] font-bold px-1.5 py-0.5 rounded"
          style={{ background: cfg.bg, color: cfg.color, border: `1px solid ${cfg.border}` }}
        >
          {cfg.label}
        </span>
      </div>

      {/* Body */}
      <div className="px-3 py-2 space-y-2">
        {/* Category */}
        <div className="flex items-center gap-2">
          <span className="text-[10px] text-[oklch(0.45_0.010_264)]">Category:</span>
          <span className="text-[10px] font-mono font-medium" style={{ color: cfg.color }}>
            {pattern.category}
          </span>
          {pattern.line_no && (
            <button
              className="text-[10px] font-mono ml-auto text-[oklch(0.45_0.010_264)] hover:text-[oklch(0.68_0.16_210)] transition-colors"
              onClick={() => pattern.line_no && onJumpToLine?.(pattern.line_no)}
            >
              L{pattern.line_no}:{pattern.line_pos}
            </button>
          )}
        </div>

        {/* Detail */}
        <p className="text-xs text-[oklch(0.72_0.010_264)] leading-relaxed">{pattern.detail}</p>

        {/* Offending token */}
        {pattern.offending_token && (
          <div className="rounded px-2 py-1.5" style={{ background: "oklch(0.10 0.008 264)" }}>
            <p className="text-[10px] text-[oklch(0.45_0.010_264)] mb-1">Offending token:</p>
            <code className="text-xs font-mono break-all" style={{ color: cfg.color }}>
              {pattern.offending_token}
            </code>
          </div>
        )}

        {/* Recommendation */}
        <div className="flex items-start gap-1.5 pt-1">
          <Info size={10} className="flex-shrink-0 mt-0.5 text-[oklch(0.45_0.010_264)]" />
          <p className="text-[10px] text-[oklch(0.55_0.010_264)] leading-relaxed">{pattern.recommendation}</p>
        </div>
      </div>
    </div>
  );
}

export function InjectionPanel({ result, onJumpToLine }: InjectionPanelProps) {
  if (!result) {
    return (
      <div className="flex flex-col items-center justify-center h-full gap-3 text-[oklch(0.45_0.010_264)]">
        <Shield size={32} className="opacity-30" />
        <p className="text-sm">Run analysis to check for injection risks</p>
      </div>
    );
  }

  const { safe, risk_score, patterns, summary } = result;

  const summaryColor =
    risk_score >= 75 ? "oklch(0.60 0.20 25)" :
    risk_score >= 50 ? "oklch(0.72 0.18 55)" :
    risk_score >= 25 ? "oklch(0.78 0.18 90)" :
    "oklch(0.72 0.17 160)";

  const SummaryIcon = safe ? ShieldCheck : risk_score >= 75 ? ShieldX : ShieldAlert;

  return (
    <div className="flex flex-col h-full">
      {/* Summary header */}
      <div className="px-3 py-3 border-b border-[oklch(0.22_0.010_264)] flex-shrink-0 space-y-2">
        <div className="flex items-center gap-2">
          <SummaryIcon size={16} style={{ color: summaryColor }} />
          <span className="text-xs font-semibold" style={{ color: summaryColor }}>
            {safe ? "No injection patterns detected" : `${patterns.length} pattern${patterns.length !== 1 ? "s" : ""} detected`}
          </span>
        </div>
        <RiskMeter score={risk_score} />
        <p className="text-xs text-[oklch(0.60_0.010_264)] leading-relaxed">{summary}</p>
      </div>

      {/* Pattern cards */}
      {safe ? (
        <div className="flex flex-col items-center justify-center flex-1 gap-3">
          <ShieldCheck size={40} style={{ color: "oklch(0.72 0.17 160)" }} className="opacity-60" />
          <p className="text-sm font-medium" style={{ color: "oklch(0.72 0.17 160)" }}>SQL appears safe</p>
          <p className="text-xs text-[oklch(0.45_0.010_264)]">No known injection patterns were found</p>
        </div>
      ) : (
        <div className="flex-1 overflow-auto pt-2">
          {patterns.map((p) => (
            <PatternCard key={p.pattern_id} pattern={p} onJumpToLine={onJumpToLine} />
          ))}
        </div>
      )}
    </div>
  );
}