// script.js – Shared logic

// Utilities
const $ = (sel) => document.querySelector(sel);
const $$ = (sel) => [...document.querySelectorAll(sel)];

// Router
function showPage(id) {
  $$('.page').forEach(p => p.classList.add('hidden'));
  $(`#${id}`).classList.remove('hidden');
}
window.showPage = showPage;

// Mock Model Registry
export const MODELS = [
  {
    id: 1,
    name: "HuggingFace BERT",
    type: "language",
    description: "Pre-trained transformer for NLP tasks like classification or Q&A.",
    endpoint: "https://api.mock/bert",
    tags: ["text", "classification", "embedding", "transformer"]
  },
  {
    id: 2,
    name: "Facebook Prophet",
    type: "time-series",
    description: "Forecasting tool for seasonal and trend time-series data.",
    endpoint: "https://api.mock/prophet",
    tags: ["forecast", "timeseries", "seasonality", "trend"]
  },
  {
    id: 3,
    name: "YOLOv8",
    type: "vision",
    description: "State-of-the-art object detection and segmentation model.",
    endpoint: "https://api.mock/yolo",
    tags: ["image", "detection", "objects", "realtime"]
  },
  {
    id: 4,
    name: "Stable Diffusion",
    type: "generative",
    description: "Generate high-quality images from text prompts.",
    endpoint: "https://api.mock/sd",
    tags: ["image", "generation", "text2img", "diffusion"]
  }
];

// Knowledge Graph
export const TASK_KEYWORDS = {
  "forecast": ["time-series"],
  "sales": ["time-series"],
  "image": ["vision", "generative"],
  "generate": ["generative"],
  "text": ["language"],
  "detect": ["vision"],
  "report": ["language"],
  "trend": ["time-series"]
};

// Simple state
window.workflowModels = [];
// Render Marketplace
function renderModels(filter = "") {
  const grid = $("#model-grid");
  grid.innerHTML = "";
  const typeFilter = $(".tag-btn.active")?.dataset.type || "";
  MODELS.filter(m => {
    if (typeFilter && m.type !== typeFilter) return false;
    if (filter && !m.name.toLowerCase().includes(filter.toLowerCase()) && !m.tags.some(t => t.toLowerCase().includes(filter.toLowerCase()))) return false;
    return true;
  }).forEach(m => {
    const card = document.createElement("model-card");
    card.setAttribute("data-id", m.id);
    card.setAttribute("data-name", m.name);
    card.setAttribute("data-type", m.type);
    card.setAttribute("data-desc", m.description);
    card.setAttribute("data-tags", JSON.stringify(m.tags));
    grid.appendChild(card);
  });
  feather.replace();
}
window.renderModels = renderModels;

// Planner Agent
function planWorkflow(task) {
  const logs = [];
  logs.push(`🔍 Planner received task: "${task}"`);
  const words = task.toLowerCase().split(/\W+/);
  const matchedTypes = new Set();
  words.forEach(w => {
    if (TASK_KEYWORDS[w]) {
      TASK_KEYWORDS[w].forEach(t => matchedTypes.add(t));
    }
  });
  logs.push(`📊 Matched types: ${[...matchedTypes].join(", ")}`);
  const suggested = MODELS.filter(m => matchedTypes.has(m.type));
  logs.push(`✅ Suggested models: ${suggested.map(m => m.name).join(", ")}`);
  const panel = $("#workflow-suggestion");
  panel.innerHTML = `<div class="mb-4"><strong>Suggested Workflow:</strong></div>
    <div class="flex flex-col gap-3">
      ${suggested.map(m => `
        <div class="p-3 rounded-lg bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700 flex items-center justify-between">
          <div>
            <div class="font-semibold">${m.name}</div>
            <div class="text-sm text-gray-500 dark:text-gray-400">${m.description}</div>
          </div>
          <button class="px-3 py-1 rounded-md bg-indigo-600 hover:bg-indigo-700 text-white text-sm add-to-workflow-btn" data-id="${m.id}">Add</button>
        </div>
      `).join("")}
    </div>`;
  // Log Panel Update
  const logPanel = document.querySelector("log-panel");
  if (logPanel) logPanel.logs = logs;
  // Bind add buttons
  $$(".add-to-workflow-btn").forEach(btn => {
    btn.onclick = () => {
      const id = Number(btn.dataset.id);
      if (!window.workflowModels.find(m => m.id === id)) {
        window.workflowModels.push(MODELS.find(m => m.id === id));
        renderWorkflowStudio();
      }
    };
  });
}

// Workflow Studio
function renderWorkflowStudio() {
  const studio = $("#workflow-studio");
  if (!window.workflowModels.length) {
    studio.innerHTML = `<div class="text-gray-500 dark:text-gray-400 text-center py-10">No models added yet. Visit Marketplace or Agents to add.</div>`;
    return;
  }
  studio.innerHTML = `
    <div id="workflow-list" class="mb-4 flex flex-col gap-3">
      ${window.workflowModels.map((m, idx) => `
        <div class="p-4 rounded-lg bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700 flex items-center justify-between cursor-move" draggable="true" data-index="${idx}">
          <div class="flex items-center gap-3">
            <i data-feather="menu" class="w-4 h-4 text-gray-400"></i>
            <div>
              <div class="font-semibold">${m.name}</div>
              <div class="text-sm text-gray-500 dark:text-gray-400">${m.type} • ${m.description}</div>
            </div>
          </div>
          <button class="px-3 py-1 rounded-md bg-red-500 hover:bg-red-600 text-white text-sm remove-model-btn" data-index="${idx}">Remove</button>
        </div>
      `).join("")}
    </div>
    <button id="run-workflow-btn" class="px-4 py-2 rounded-lg bg-green-600 hover:bg-green-700 text-white font-medium">Run Workflow</button>
    <div id="workflow-results" class="mt-6"></div>
  `;
  feather.replace();
  bindReorder();
  $$(".remove-model-btn").forEach(btn => {
    btn.onclick = () => {
      const idx = Number(btn.dataset.index);
      window.workflowModels.splice(idx, 1);
      renderWorkflowStudio();
    };
  };
  $("#run-workflow-btn").onclick = runWorkflow;
}

// Drag Reorder
function bindReorder() {
  const list = $("#workflow-list");
  let dragged = null;
  list.querySelectorAll("[draggable=true]").forEach(el => {
    el.ondragstart = (e) => { dragged = e.target.closest("[data-index]"); };
    el.ondragover = (e) => e.preventDefault();
    el.ondrop = (e) => {
      e.preventDefault();
      const target = e.target.closest("[data-index]");
      if (!target || target === dragged) return;
      const from = Number(dragged.dataset.index);
      const to = Number(target.dataset.index);
      const temp = window.workflowModels[from];
      window.workflowModels[from] = window.workflowModels[to];
      window.workflowModels[to] = temp;
      renderWorkflowStudio();
    };
  });
}

// Run Workflow
async function runWorkflow() {
  const results = $("#workflow-results");
  results.innerHTML = `<div class="text-gray-500 dark:text-gray-400">Running...</div>`;
  const logs = [];
  const outputs = [];
  for (const m of window.workflowModels) {
    logs.push(`🚀 Calling ${m.name} at ${m.endpoint}`);
    await new Promise(r => setTimeout(r, 600)); // mock latency
    let out = `[Mock Output] ${m.name}: `;
    if (m.type === "language") out += "Generated text summary.";
    if (m.type === "time-series") out += "Sales forecast chart data.";
    if (m.type === "vision") out += "Detected 5 objects.";
    if (m.type === "generative") out += `<img src="https://static.photos/abstract/640x360/${m.id}" alt="generated image" class="rounded-lg mt-2 max-w-full"/>`;
    outputs.push(out);
    logs.push(`✅ ${m.name} responded`);
  }
  logs.push("✨ Workflow complete");
  const logPanel = document.querySelector("log-panel");
  if (logPanel) logPanel.logs = logs;
  results.innerHTML = `
    <div class="mb-2 font-semibold">Results:</div>
    <div class="flex flex-col gap-3">
      ${outputs.map(o => `<div class="p-3 rounded-lg bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700">${o}</div>`).join("")}
    </div>
  `;
}
// Init
document.addEventListener("DOMContentLoaded", () => {
  renderModels();
  // Search
  $("#search-input").addEventListener("input", e => renderModels(e.target.value));
  // Type Filter
  $(".tag-btn").forEach(btn => {
    btn.onclick = () => {
      $(".tag-btn").forEach(b => b.classList.remove("active"));
      btn.classList.add("active");
      renderModels();
    };
  });
  // Planner
  $("#plan-btn").onclick = () => {
    const task = $("#task-input").value.trim();
    if (!task) return;
    planWorkflow(task);
  };
  // Workflow Studio
  window.renderWorkflowStudio = renderWorkflowStudio;
  renderWorkflowStudio();
});