"use client";

import { Plus, X, CheckCircle2, XCircle, Clock, Zap } from "lucide-react";
import { useCampaignStore } from "@/lib/stores/campaign-store";
import type { PostData, Platform, PostPlatformContent, PostSyncState, PostMetrics } from "@/lib/types/campaign";
import { PLATFORMS } from "@/lib/types/campaign";

interface Props {
  nodeId: string;
  data: PostData;
}

function SyncBadge({ state }: { state: PostSyncState }) {
  const icons: Record<string, React.ReactNode> = {
    synced: <CheckCircle2 className="w-3 h-3 text-emerald-500" />,
    failed: <XCircle className="w-3 h-3 text-red-500" />,
    pending: <Clock className="w-3 h-3 text-amber-500" />,
    published: <Zap className="w-3 h-3 text-blue-500" />,
  };

  return (
    <div className="flex items-center gap-1 text-xs">
      {icons[state.status]}
      <span
        className={
          state.status === "synced"
            ? "text-emerald-500"
            : state.status === "failed"
              ? "text-red-500"
              : state.status === "published"
                ? "text-blue-500"
                : "text-amber-500"
        }
      >
        {state.status}
      </span>
      {state.error && (
        <span className="text-red-400 truncate max-w-[150px]" title={state.error}>
          {state.error}
        </span>
      )}
    </div>
  );
}

function MetricsBadge({ metrics }: { metrics: PostMetrics }) {
  const parts: string[] = [];
  if (metrics.likes != null) parts.push(`${metrics.likes} likes`);
  if (metrics.comments != null) parts.push(`${metrics.comments} comments`);
  if (metrics.shares != null) parts.push(`${metrics.shares} shares`);
  if (metrics.impressions != null) parts.push(`${metrics.impressions} impr.`);

  if (parts.length === 0) return null;

  return (
    <div className="text-xs text-muted-foreground bg-muted/50 rounded px-2 py-0.5 mt-1">
      {parts.join(" · ")}
      {metrics.fetchedAt && (
        <span className="ml-1 opacity-50">
          ({new Date(metrics.fetchedAt).toLocaleTimeString()})
        </span>
      )}
    </div>
  );
}

export function PostForm({ nodeId, data }: Props) {
  const updateNodeData = useCampaignStore((s) => s.updateNodeData);

  const addPlatform = (platformId: Platform) => {
    if (data.platforms.some((p) => p.platform === platformId)) return;
    const newPlatforms: PostPlatformContent[] = [
      ...data.platforms,
      { platform: platformId, content: data.sharedContent },
    ];
    updateNodeData(nodeId, { platforms: newPlatforms });
  };

  const removePlatform = (platformId: Platform) => {
    updateNodeData(nodeId, {
      platforms: data.platforms.filter((p) => p.platform !== platformId),
    });
  };

  const updatePlatformContent = (platformId: Platform, content: string) => {
    updateNodeData(nodeId, {
      platforms: data.platforms.map((p) =>
        p.platform === platformId ? { ...p, content } : p
      ),
    });
  };

  const availablePlatforms = PLATFORMS.filter(
    (p) => !data.platforms.some((dp) => dp.platform === p.id)
  );

  return (
    <div className="space-y-4">
      <div>
        <label className="block text-sm font-medium text-foreground mb-1.5">Shared Content</label>
        <textarea
          value={data.sharedContent}
          onChange={(e) => updateNodeData(nodeId, { sharedContent: e.target.value })}
          placeholder="Write your post content..."
          rows={3}
          className="w-full rounded-lg border border-border bg-card px-3 py-2 text-sm text-foreground resize-none focus:outline-none focus:ring-2 focus:ring-primary/50"
        />
      </div>

      <div>
        <label className="block text-sm font-medium text-foreground mb-1.5">Platforms</label>
        {data.platforms.map((pp) => {
          const info = PLATFORMS.find((p) => p.id === pp.platform);
          const syncState = data.postizSync?.[pp.platform];
          const platformMetrics = data.metrics?.[pp.platform];

          return (
            <div key={pp.platform} className="mb-3 rounded-lg border border-border p-3">
              <div className="flex items-center justify-between mb-2">
                <span className="text-sm font-medium" style={{ color: info?.color }}>
                  {info?.label}
                </span>
                <div className="flex items-center gap-2">
                  {syncState && <SyncBadge state={syncState} />}
                  <button
                    onClick={() => removePlatform(pp.platform)}
                    className="text-muted-foreground hover:text-destructive"
                  >
                    <X className="w-4 h-4" />
                  </button>
                </div>
              </div>
              <textarea
                value={pp.content}
                onChange={(e) => updatePlatformContent(pp.platform, e.target.value)}
                placeholder={`Custom content for ${info?.label}...`}
                rows={2}
                className="w-full rounded-md border border-border bg-background px-2 py-1.5 text-xs text-foreground resize-none focus:outline-none focus:ring-1 focus:ring-primary/50"
              />
              {platformMetrics && <MetricsBadge metrics={platformMetrics} />}
            </div>
          );
        })}

        {availablePlatforms.length > 0 && (
          <div className="flex flex-wrap gap-1.5 mt-2">
            {availablePlatforms.map((p) => (
              <button
                key={p.id}
                onClick={() => addPlatform(p.id)}
                className="inline-flex items-center gap-1 rounded-full border border-border px-2.5 py-1 text-xs text-muted-foreground hover:border-primary hover:text-primary transition-colors"
              >
                <Plus className="w-3 h-3" />
                {p.label}
              </button>
            ))}
          </div>
        )}
      </div>
    </div>
  );
}