/** Dashboard: workspace artifact + control rendering.
 *  Artifact system: typed artifacts (entity_detail, data_table, document_page, action_bar, status, machine).
 *  Legacy: dockControls() still works as fallback for old control format.
 */

import { esc, renderMarkdown } from './util.js';
import { addTrace } from './trace.js';
import { setDashboard } from './chat.js';

let _ws = null;

export function setWs(ws) { _ws = ws; }

function _sendAction(action, data) {
  if (_ws && _ws.readyState === 1) {
    _ws.send(JSON.stringify({ type: 'action', action, data: data || {} }));
    addTrace('runtime', 'action', action);
  }
}

// --- Artifact system ---

export function dockArtifacts(artifacts) {
  const body = document.getElementById('workspace-body');
  if (!body) return;
  body.innerHTML = '';
  const container = document.createElement('div');
  container.className = 'artifacts-container';

  for (const art of artifacts) {
    const wrapper = document.createElement('div');
    wrapper.className = 'ws-artifact ws-artifact-' + (art.type || 'unknown');
    wrapper.dataset.artifactId = art.id || '';

    const renderer = RENDERERS[art.type];
    if (renderer) {
      renderer(wrapper, art);
    } else {
      wrapper.innerHTML = '<div class="ws-artifact-fallback">' + esc(JSON.stringify(art.data || {})) + '</div>';
    }

    container.appendChild(wrapper);
  }
  body.appendChild(container);
  // Also set dashboard for S3* audit (flatten actions from artifacts)
  const flatControls = artifacts.flatMap(a => (a.actions || []).map(act => ({type: 'button', ...act})));
  setDashboard(flatControls);
}

// --- Artifact renderers ---

const RENDERERS = {
  entity_detail: renderEntityDetail,
  data_table: renderDataTable,
  document_page: renderDocumentPage,
  action_bar: renderActionBar,
  status: renderStatus,
  machine: renderMachine,
};

function renderEntityDetail(el, art) {
  const d = art.data || {};
  let html = '';
  if (d.title) html += '<div class="ws-card-title">' + esc(d.title) + '</div>';
  if (d.subtitle) html += '<div class="ws-card-subtitle">' + esc(d.subtitle) + '</div>';

  // List mode (multiple items)
  if (d.items && d.items.length) {
    html += '<div class="ws-list">';
    for (const item of d.items) {
      html += '<div class="ws-card ws-card-nested">';
      if (item.title) html += '<div class="ws-card-title">' + esc(item.title) + '</div>';
      if (item.fields) {
        html += '<div class="ws-card-fields">';
        for (const f of item.fields) {
          html += '<div class="ws-card-field"><span class="ws-card-key">' + esc(f.label || '') + '</span><span class="ws-card-val">' + esc(String(f.value ?? '')) + '</span></div>';
        }
        html += '</div>';
      }
      html += '</div>';
    }
    html += '</div>';
  }

  // Single entity fields
  if (d.fields && d.fields.length) {
    html += '<div class="ws-card-fields">';
    for (const f of d.fields) {
      const val = f.action
        ? '<span class="ws-card-link" data-action="' + esc(f.action) + '">' + esc(String(f.value ?? '')) + '</span>'
        : '<span class="ws-card-val">' + esc(String(f.value ?? '')) + '</span>';
      html += '<div class="ws-card-field"><span class="ws-card-key">' + esc(f.label || '') + '</span>' + val + '</div>';
    }
    html += '</div>';
  }

  // Actions
  if (art.actions && art.actions.length) {
    html += '<div class="ws-card-actions">';
    for (const a of art.actions) {
      html += '<button class="control-btn ws-card-btn" data-action="' + esc(a.action || '') + '">' + esc(a.label || '') + '</button>';
    }
    html += '</div>';
  }

  el.innerHTML = html;
  _wireActions(el);
}

function renderDataTable(el, art) {
  const d = art.data || {};
  if (d.title) {
    const title = document.createElement('div');
    title.className = 'ws-artifact-header';
    title.textContent = d.title;
    el.appendChild(title);
  }
  const table = document.createElement('table');
  table.className = 'control-table';
  const cols = d.columns || (d.rows && d.rows.length ? Object.keys(d.rows[0]) : []);
  if (cols.length) {
    const thead = document.createElement('tr');
    for (const col of cols) {
      const th = document.createElement('th');
      th.textContent = col;
      thead.appendChild(th);
    }
    table.appendChild(thead);
  }
  for (const row of (d.rows || d.data || [])) {
    const tr = document.createElement('tr');
    if (Array.isArray(row)) {
      for (const cell of row) {
        const td = document.createElement('td'); td.textContent = cell; tr.appendChild(td);
      }
    } else if (typeof row === 'object') {
      for (const col of cols) {
        const td = document.createElement('td'); td.textContent = row[col] ?? ''; tr.appendChild(td);
      }
    }
    table.appendChild(tr);
  }
  el.appendChild(table);
}

function renderDocumentPage(el, art) {
  const d = art.data || {};
  let html = '';
  if (d.title) html += '<div class="ws-doc-title">' + esc(d.title) + '</div>';
  for (const section of (d.sections || [])) {
    html += '<div class="ws-doc-section">';
    if (section.heading) html += '<div class="ws-doc-heading">' + esc(section.heading) + '</div>';
    if (section.content) html += '<div class="ws-doc-content">' + renderMarkdown(section.content) + '</div>';
    html += '</div>';
  }
  // Actions (e.g. PDF export)
  if (art.actions && art.actions.length) {
    html += '<div class="ws-card-actions">';
    for (const a of art.actions) {
      html += '<button class="control-btn ws-card-btn" data-action="' + esc(a.action || '') + '">' + esc(a.label || '') + '</button>';
    }
    html += '</div>';
  }
  el.innerHTML = html;
  _wireActions(el);
}

function renderActionBar(el, art) {
  for (const a of (art.actions || [])) {
    const btn = document.createElement('button');
    btn.className = 'control-btn';
    btn.textContent = a.label || '';
    btn.onclick = () => _sendAction(a.action, a.payload || {});
    el.appendChild(btn);
  }
}

function renderStatus(el, art) {
  const d = art.data || {};
  const dt = d.display_type || 'text';
  el.classList.add('display-' + dt);
  if (dt === 'progress') {
    const pct = Math.min(100, Math.max(0, Number(d.value) || 0));
    el.innerHTML = '<span class="cd-label">' + esc(d.label) + '</span>'
      + '<div class="cd-bar"><div class="cd-fill" style="width:' + pct + '%"></div></div>'
      + '<span class="cd-pct">' + pct + '%</span>';
  } else if (dt === 'info') {
    el.innerHTML = '<span class="cd-icon">\u2139</span><span class="cd-label">' + esc(d.label) + '</span>';
  } else {
    el.innerHTML = '<span class="cd-label">' + esc(d.label || '') + '</span>'
      + (d.value ? '<span class="cd-value">' + esc(String(d.value)) + '</span>' : '');
  }
}

function renderMachine(el, art) {
  const d = art.data || {};
  const mid = d.machine_id || '';
  // Header
  let html = '<div class="ws-machine-header"><span class="ws-machine-name">' + esc(mid) + '</span>'
    + '<span class="ws-machine-state">' + esc(d.current || '') + '</span></div>';
  // Content
  for (const text of (d.content || [])) {
    html += '<div class="ws-machine-content">' + esc(text) + '</div>';
  }
  // Stored data
  const stored = d.stored_data || {};
  if (Object.keys(stored).length) {
    html += '<div class="ws-machine-data">';
    for (const [k, v] of Object.entries(stored)) {
      html += '<span class="ws-machine-datum">' + esc(k) + '=' + esc(String(v)) + '</span>';
    }
    html += '</div>';
  }
  // Buttons
  if (art.actions && art.actions.length) {
    html += '<div class="ws-card-actions">';
    for (const a of art.actions) {
      html += '<button class="control-btn ws-card-btn" data-action="' + esc(a.action || '') + '">' + esc(a.label || '') + '</button>';
    }
    html += '</div>';
  }
  el.innerHTML = html;
  _wireActions(el);
}

// --- Helpers ---

function _wireActions(el) {
  el.querySelectorAll('.ws-card-link').forEach(link => {
    link.onclick = (e) => { e.stopPropagation(); _sendAction(link.dataset.action, {}); };
  });
  el.querySelectorAll('.ws-card-btn').forEach(btn => {
    btn.onclick = (e) => { e.stopPropagation(); _sendAction(btn.dataset.action, {}); };
  });
}

// --- Legacy control rendering (backward compat) ---

export function dockControls(controls) {
  setDashboard(controls);
  const body = document.getElementById('workspace-body');
  if (!body) return;
  body.innerHTML = '';
  const container = document.createElement('div');
  container.className = 'controls-container';

  for (const ctrl of controls) {
    if (ctrl.type === 'button') {
      const btn = document.createElement('button');
      btn.className = 'control-btn';
      btn.textContent = ctrl.label;
      btn.onclick = () => _sendAction(ctrl.action, ctrl.payload || ctrl.data || {});
      container.appendChild(btn);
    } else if (ctrl.type === 'table') {
      const table = document.createElement('table');
      table.className = 'control-table';
      if (ctrl.columns) {
        const thead = document.createElement('tr');
        for (const col of ctrl.columns) {
          const th = document.createElement('th'); th.textContent = col; thead.appendChild(th);
        }
        table.appendChild(thead);
      }
      for (const row of (ctrl.data || [])) {
        const tr = document.createElement('tr');
        if (Array.isArray(row)) {
          for (const cell of row) { const td = document.createElement('td'); td.textContent = cell; tr.appendChild(td); }
        } else if (typeof row === 'object') {
          for (const col of (ctrl.columns || Object.keys(row))) { const td = document.createElement('td'); td.textContent = row[col] ?? ''; tr.appendChild(td); }
        }
        table.appendChild(tr);
      }
      container.appendChild(table);
    } else if (ctrl.type === 'label') {
      const lbl = document.createElement('div');
      lbl.className = 'control-label';
      lbl.innerHTML = '<span class="cl-text">' + esc(ctrl.text || '') + '</span><span class="cl-value">' + esc(String(ctrl.value ?? '')) + '</span>';
      container.appendChild(lbl);
    } else if (ctrl.type === 'display') {
      const disp = document.createElement('div');
      const dt = ctrl.display_type || 'text';
      disp.className = 'control-display display-' + dt;
      if (dt === 'progress') {
        const pct = Math.min(100, Math.max(0, Number(ctrl.value) || 0));
        disp.innerHTML = '<span class="cd-label">' + esc(ctrl.label) + '</span><div class="cd-bar"><div class="cd-fill" style="width:' + pct + '%"></div></div><span class="cd-pct">' + pct + '%</span>';
      } else {
        disp.innerHTML = '<span class="cd-label">' + esc(ctrl.label) + '</span>' + (ctrl.value ? '<span class="cd-value">' + esc(String(ctrl.value)) + '</span>' : '');
      }
      container.appendChild(disp);
    } else if (ctrl.type === 'card') {
      const card = document.createElement('div');
      card.className = 'ws-card';
      let html = '';
      if (ctrl.title) html += '<div class="ws-card-title">' + esc(ctrl.title) + '</div>';
      if (ctrl.subtitle) html += '<div class="ws-card-subtitle">' + esc(ctrl.subtitle) + '</div>';
      if (ctrl.fields && ctrl.fields.length) {
        html += '<div class="ws-card-fields">';
        for (const f of ctrl.fields) {
          html += '<div class="ws-card-field"><span class="ws-card-key">' + esc(f.label || '') + '</span><span class="ws-card-val">' + esc(String(f.value ?? '')) + '</span></div>';
        }
        html += '</div>';
      }
      if (ctrl.actions && ctrl.actions.length) {
        html += '<div class="ws-card-actions">';
        for (const a of ctrl.actions) {
          html += '<button class="control-btn ws-card-btn" data-action="' + esc(a.action || '') + '">' + esc(a.label || '') + '</button>';
        }
        html += '</div>';
      }
      card.innerHTML = html;
      _wireActions(card);
      container.appendChild(card);
    }
  }
  body.appendChild(container);
}

export function clearDashboard() {
  const body = document.getElementById('workspace-body');
  if (body) body.innerHTML = '';
}