{% extends "base.html" %}
{% block page_title %}{{ workspace_name }}{% endblock %}
{% block title_prefix %}{{ workspace_name }}{% endblock %}
{% block page_icon %}🔗{% endblock %}

{% block topbar %}
<header class="topbar">
  <button class="hamburger-btn" @click="mobileSidebarOpen = true; sidebarCollapsed = false;" title="Menu">
    <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><line x1="3" y1="6" x2="21" y2="6"/><line x1="3" y1="12" x2="21" y2="12"/><line x1="3" y1="18" x2="21" y2="18"/></svg>
  </button>
  <div class="topbar-left">
    <a href="/workspaces" class="breadcrumb" style="color:rgba(255,255,255,.5);text-decoration:none;">Home</a>
    <span class="page-title-topbar">{{ owner }}/{{ repo }}</span>
  </div>
  <div class="topbar-right" style="display:flex;align-items:center;gap:6px;">
    <button class="page-action-btn" @click="showNewFile=!showNewFile" title="New file">📄+</button>
    <button class="page-action-btn" @click="triggerUpload()" title="Upload file">📤</button>
    <input type="file" id="gitea-upload-input" style="display:none" @change="doUpload($event)" multiple>
    <button class="page-action-btn" @click="refreshTree()" title="Refresh">🔄</button>
    <button class="page-action-btn" onclick="window.location='/accounts/settings'" title="Settings">⚙</button>
  </div>
</header>
{% endblock %}

{% block content %}
<!-- Prism.js syntax highlighting -->
<link rel="stylesheet" href="/static/css/prism.css">
<script src="/static/js/prism.min.js"></script>
<style>
.gw-main{display:flex;flex-direction:column;height:calc(100vh - 48px);overflow:hidden;}
.gw-content{padding:24px;overflow-y:auto;flex:1;}
.gw-content h3{font-size:16px;margin-bottom:12px;color:var(--text-dim);}
.gw-content pre{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;padding:16px;overflow-x:auto;font-size:13px;line-height:1.5;white-space:pre-wrap;word-break:break-word;max-height:70vh;overflow-y:auto;}
.gw-content pre[class*="language-"]{background:transparent;border:none;padding:0;margin:0;white-space:pre;word-break:normal;}
.gw-content code[class*="language-"]{font-size:13px;line-height:1.5;tab-size:4;}
.gw-content .empty-state{text-align:center;padding:60px 20px;color:var(--text-dim);}
.gw-content .empty-state h2{font-size:18px;margin-bottom:8px;color:var(--text);}
.gw-content textarea{width:100%;min-height:50vh;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:13px;padding:12px;font-family:monospace;resize:vertical;outline:none;}
.gw-content textarea:focus{border-color:var(--accent);}
.gw-file-toolbar{display:flex;align-items:center;gap:8px;padding:8px 24px;background:var(--bg-secondary);border-bottom:1px solid var(--border);font-size:13px;color:var(--text-dim);}
.gw-file-toolbar strong{color:var(--text);margin-right:12px;}
.gw-commit-bar{display:flex;align-items:center;gap:8px;padding:12px 24px;background:var(--bg-secondary);border-top:1px solid var(--border);flex-wrap:wrap;}
.gw-commit-bar input{flex:1;min-width:180px;padding:8px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:13px;outline:none;}
.gw-commit-bar input:focus{border-color:var(--accent);}

/* Prism theme tweaks for dark UI */
.gw-content pre[class*="language-"]{background:var(--bg-tertiary)!important;border:1px solid var(--border)!important;border-radius:8px!important;padding:16px!important;}
</style>

<div class="gw-main" x-data="giteaWorkspace()">
  <!-- File view -->
  <div x-show="showFile && !showEditor" x-transition>
    <div class="gw-file-toolbar">
      <strong x-text="filePath || ''"></strong>
      <span x-text="formatSize(fileSize)"></span>
      <span style="flex:1;"></span>
      <button class="btn" @click="openEditor()">✏️ Edit</button>
      <button class="btn btn-danger" @click="deleteCurrentFile()">🗑 Delete</button>
    </div>
    <div class="gw-content">
      <!-- Skeleton loading -->
      <div x-show="fileLoading" class="skeleton-file">
        <div class="skeleton" style="height:15px;width:60%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:80%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:40%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:75%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:55%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:90%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:35%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:65%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:45%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:70%;margin-bottom:12px;"></div>
        <div class="skeleton" style="height:15px;width:50%;"></div>
      </div>
      <!-- Syntax-highlighted code -->
      <pre x-show="!fileLoading"><code :class="'language-'+fileLanguage" x-ref="codeBlock" x-text="fileContent"></code></pre>
    </div>
  </div>

  <!-- Editor view -->
  <template x-if="showEditor">
    <div>
      <div class="gw-file-toolbar">
        <strong>Editing: <span x-text="filePath || 'new file'"></span></strong>
        <span style="flex:1;"></span>
        <button class="btn" @click="showEditor=false">Cancel</button>
      </div>
      <div class="gw-content">
        <textarea x-model="editContent"></textarea>
      </div>
      <div class="gw-commit-bar">
        <input type="text" x-model="commitMessage" placeholder="Commit message" list="commit-history">
        <datalist id="commit-history">
          <template x-for="msg in commitHistory" :key="msg">
            <option :value="msg">
          </template>
        </datalist>
        <button class="btn-primary" @click="saveFile()">💾 Commit</button>
      </div>
    </div>
  </template>

  <!-- Empty state -->
  <template x-if="!showFile && !showEditor && !showPrivate">
    <div class="gw-content">
      <div class="empty-state">
        <h2>📁 <span x-text="owner + '/' + repo"></span></h2>
        <p x-show="!showNewFile">Select a file from the sidebar or create a new one</p>
        <!-- New file form -->
        <div x-show="showNewFile" style="margin-top:16px;text-align:left;max-width:400px;margin-left:auto;margin-right:auto;">
          <input type="text" x-model="newFilePath" placeholder="path/to/file.md" class="settings-input" style="margin-bottom:8px;">
          <textarea x-model="newFileContent" placeholder="File content..." class="settings-input" style="height:120px;margin-bottom:8px;"></textarea>
          <input type="text" x-model="newFileMsg" placeholder="Commit message" class="settings-input" style="margin-bottom:8px;">
          <button class="btn btn-primary" @click="createNewFile()">💾 Create file</button>
        </div>
      </div>
    </div>
  </template>

  <!-- Private pages view -->
  <template x-if="showPrivate && !editingPrivate">
    <div class="gw-content">
      <div style="display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;">
        <h3>🔒 Private Pages</h3>
        <button class="btn btn-primary" @click="newPrivate()">+ New Page</button>
      </div>
      <template x-if="privatePages.length === 0">
        <div class="empty-state" style="padding:40px 20px;">
          <p>No private pages yet. Create one to store notes linked to this project.</p>
        </div>
      </template>
      <template x-for="pp in privatePages" :key="pp.id">
        <div style="background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;padding:16px;margin-bottom:8px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;"
             @click="openPrivate(pp.id)">
          <div>
            <div style="font-weight:500;" x-text="pp.title"></div>
            <div style="font-size:12px;color:var(--text-dim);" x-text="pp.updated_at ? new Date(pp.updated_at+'Z').toLocaleString() : ''"></div>
          </div>
          <button class="btn btn-danger" style="padding:4px 8px;font-size:11px;" @click.stop="deletePrivate(pp.id)">🗑</button>
        </div>
      </template>
    </div>
  </template>

  <!-- Private page editor -->
  <template x-if="editingPrivate">
    <div>
      <div class="gw-file-toolbar">
        <strong>Editing: <span x-text="editingPrivateTitle || 'Untitled'"></span></strong>
        <span style="flex:1;"></span>
        <button class="btn" @click="savePrivate()">💾 Save</button>
        <button class="btn" @click="editingPrivate=null;editingPrivateTitle='';editingPrivateContent='';">Cancel</button>
      </div>
      <div class="gw-content">
        <input x-model="editingPrivateTitle" placeholder="Page title" style="width:100%;padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:16px;margin-bottom:12px;outline:none;">
        <textarea x-model="editingPrivateContent" placeholder="Start writing…" style="min-height:60vh;"></textarea>
      </div>
    </div>
  </template>
</div>

<script>
function giteaWorkspace() {
  const params = new URLSearchParams(window.location.search);
  const owner = params.get('owner') || '';
  const repo = params.get('repo') || '';

  return {
    owner, repo,
    showFile: false,
    showEditor: false,
    showPrivate: false,
    privatePages: [],
    editingPrivate: null,
    editingPrivateTitle: '',
    editingPrivateContent: '',
    filePath: '',
    fileContent: '',
    fileSize: 0,
    fileSha: '',
    fileLoading: false,
    fileLanguage: 'text',
    editContent: '',
    commitMessage: 'Update via FlowDeck',
    commitHistory: JSON.parse(localStorage.getItem('fd_commit_msgs') || '[]'),

    init() {
      // Set cookie for sidebar
      document.cookie = 'flowdeck_workspace=gitea:' + this.owner + ':' + this.repo + ';path=/;SameSite=Lax';
      // Load root tree into sidebar
      this.loadSidebarTree();
      // Listen for sidebar clicks on Gitea items
      this.setupSidebarClicks();
    },

    async loadSidebarTree() {
      try {
        var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/tree');
        if (!r.ok) return;
        var d = await r.json();
        var items = d.tree || [];
        var container = document.getElementById('sidebar-workspace-items');
        if (!container) return;
        container.innerHTML = '';
        var self = this;
        items.forEach(function(item) {
          var icon = item.type === 'folder' ? '📁' : '📄';
          var li = document.createElement('li');
          li.className = 'sidebar-item';
          li.setAttribute('data-gitea-path', item.path);
          li.setAttribute('data-gitea-type', item.type === 'folder' ? 'folder' : 'file');
          li.setAttribute('data-gitea-sha', item.sha || '');
          li.style.cssText = 'padding-left:12px;cursor:pointer;display:flex;align-items:center;gap:4px;';
          // Checkbox (hidden by default, visible in multi-select mode)
          var cb = document.createElement('input');
          cb.type = 'checkbox';
          cb.className = 'gitea-checkbox';
          cb.style.cssText = 'flex-shrink:0;margin:0;display:none;';
          cb.addEventListener('click', function(ev) {
            ev.stopPropagation();
            self.selectItem(item.path, li, ev);
          });
          li.appendChild(cb);
          // Icon
          var iconSpan = document.createElement('span');
          iconSpan.className = 'page-icon';
          iconSpan.textContent = icon;
          li.appendChild(iconSpan);
          // Name (with double-click rename)
          var nameSpan = document.createElement('span');
          nameSpan.className = 'page-name';
          nameSpan.textContent = item.name;
          nameSpan.addEventListener('dblclick', function(ev) {
            ev.preventDefault();
            ev.stopPropagation();
            self.startInlineRename(nameSpan, item.path, li);
          });
          li.appendChild(nameSpan);
          container.appendChild(li);
        });
        // Add Private Pages link
        var sep = document.createElement('li');
        sep.style.cssText = 'border-top:1px solid var(--border);margin:8px 0;';
        container.appendChild(sep);
        var pli = document.createElement('li');
        pli.className = 'sidebar-item';
        pli.style.cssText = 'padding-left:12px;cursor:pointer;';
        pli.innerHTML = '<span class="page-icon">🔒</span><span class="page-name">Private Pages</span>';
        pli.addEventListener('click', function(e) {
          e.preventDefault(); e.stopPropagation();
          self.showPrivate = true; self.showFile = false; self.showEditor = false;
          self.loadPrivatePages();
        });
        container.appendChild(pli);
      } catch(e) { console.error('Sidebar tree load failed:', e); }
    },

    setupSidebarClicks() {
      var self = this;
      document.addEventListener('click', function(e) {
        var el = e.target.closest('.sidebar-item[data-gitea-path]');
        if (!el) return;

        var path = el.getAttribute('data-gitea-path');
        var type = el.getAttribute('data-gitea-type');

        // If clicking the checkbox, let its own handler deal with selection
        if (e.target.classList.contains('gitea-checkbox')) return;

        // If clicking the inline rename input, don't navigate
        if (e.target.classList.contains('inline-rename-input')) return;

        // If Shift or Ctrl/Meta is pressed, use multi-selection
        if (e.shiftKey || e.ctrlKey || e.metaKey) {
          e.preventDefault();
          e.stopPropagation();
          self.selectItem(path, el, e);
          return;
        }

        // Normal click: navigate (open file/folder)
        e.preventDefault();
        e.stopPropagation();

        // Update visual "active" state
        document.querySelectorAll('.sidebar-item.active').forEach(function(si) {
          si.classList.remove('active');
        });
        el.classList.add('active');

        if (type === 'folder') {
          self.loadSubdir(path, el);
        } else {
          self.openFile(path, el.getAttribute('data-gitea-sha'));
        }
      });

      // Listen for custom delete event on gitea sidebar items
      document.addEventListener('gitea-delete', function(e) {
        var el = e.target;
        var path = el.getAttribute('data-gitea-path');
        if (!path) return;
        if (!confirm('Delete ' + path + ' from ' + self.owner + '/' + self.repo + '?')) return;
        var sha = el.getAttribute('data-gitea-sha') || '';
        fetch('/api/gitea/projects/' + self.owner + '/' + self.repo + '/file?path=' + encodeURIComponent(path) + '&sha=' + encodeURIComponent(sha) + '&message=' + encodeURIComponent('Delete via FlowDeck'), {
          method: 'DELETE',
        }).then(function(r) {
          if (r.ok) self.refreshTree();
        }).catch(function() {});
      });
    },

    async loadSubdir(path, el) {
      var self = this;
      // Check if already loaded
      var ul = el.querySelector('ul');
      if (ul) {
        ul.style.display = ul.style.display === 'none' ? '' : 'none';
        return;
      }
      try {
        var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/tree?path=' + encodeURIComponent(path));
        if (!r.ok) return;
        var d = await r.json();
        var children = d.tree || [];
        ul = document.createElement('ul');
        ul.className = 'sidebar-items';
        ul.style.paddingLeft = '20px';
        children.forEach(function(child) {
          var icon = child.type === 'folder' ? '📁' : '📄';
          var li = document.createElement('li');
          li.className = 'sidebar-item';
          li.setAttribute('data-gitea-path', child.path);
          li.setAttribute('data-gitea-type', child.type === 'folder' ? 'folder' : 'file');
          li.setAttribute('data-gitea-sha', child.sha || '');
          li.style.cssText = 'cursor:pointer;display:flex;align-items:center;gap:4px;';
          // Checkbox
          var cb = document.createElement('input');
          cb.type = 'checkbox';
          cb.className = 'gitea-checkbox';
          cb.style.cssText = 'flex-shrink:0;margin:0;display:none;';
          cb.addEventListener('click', function(ev) {
            ev.stopPropagation();
            self.selectItem(child.path, li, ev);
          });
          li.appendChild(cb);
          // Icon
          var iconSpan = document.createElement('span');
          iconSpan.className = 'sidebar-icon';
          iconSpan.textContent = icon;
          li.appendChild(iconSpan);
          // Name
          var nameSpan = document.createElement('span');
          nameSpan.textContent = child.name;
          nameSpan.addEventListener('dblclick', function(ev) {
            ev.preventDefault();
            ev.stopPropagation();
            self.startInlineRename(nameSpan, child.path, li);
          });
          li.appendChild(nameSpan);
          ul.appendChild(li);
        });
        el.appendChild(ul);
      } catch(e) {}
    },

    async openFile(path, sha) {
      this.filePath = path;
      this.fileSha = sha || '';
      this.showEditor = false;
      this.showFile = true;
      this.fileLoading = true;
      this.fileLanguage = this.getLanguage(path);
      try {
        var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/file?path=' + encodeURIComponent(path));
        if (r.ok) {
          var d = await r.json();
          this.fileContent = d.content || '';
          this.fileSize = d.content ? d.content.length : 0;
        } else {
          this.fileContent = '[Error loading file]';
        }
      } catch(e) {
        this.fileContent = '[Error loading file]';
      }
      this.fileLoading = false;
      // Highlight after Alpine renders
      var self = this;
      this.$nextTick(function() {
        var block = self.$refs.codeBlock;
        if (block && block.textContent && typeof Prism !== 'undefined') {
          Prism.highlightElement(block);
        }
      });
    },

    getLanguage(path) {
      var ext = (path || '').split('.').pop().toLowerCase();
      var map = {
        js:'javascript', jsx:'javascript', ts:'typescript', tsx:'typescript',
        py:'python', rb:'ruby', rs:'rust', go:'go', java:'java', kt:'kotlin',
        c:'c', cpp:'c', h:'c', hpp:'c', cs:'csharp',
        html:'markup', htm:'markup', xml:'markup', svg:'markup', css:'css', scss:'css',
        json:'json', yaml:'yaml', yml:'yaml', toml:'toml', ini:'ini',
        md:'markdown', sql:'sql', sh:'bash', bash:'bash', zsh:'bash',
        php:'php', swift:'swift', r:'r', lua:'lua', dart:'dart',
        dockerfile:'docker', makefile:'makefile', cmake:'cmake',
      };
      return map[ext] || 'text';
    },

    openEditor() {
      this.editContent = this.fileContent;
      this.showEditor = true;
    },

    async saveFile() {
      if (!this.filePath) return;
      try {
        var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/file', {
          method: 'PUT',
          headers: {'Content-Type': 'application/json', 'X-CSRF-Token': this.getCsrfToken()},
          body: JSON.stringify({
            path: this.filePath, content: this.editContent,
            message: this.commitMessage, sha: this.fileSha,
          })
        });
        if (r.ok) {
          this.fileContent = this.editContent;
          this.showEditor = false;
          if (!this.commitHistory.includes(this.commitMessage)) {
            this.commitHistory.unshift(this.commitMessage);
            if (this.commitHistory.length > 10) this.commitHistory.pop();
            localStorage.setItem('fd_commit_msgs', JSON.stringify(this.commitHistory));
          }
        } else {
          var d = await r.json();
          window.showToast('Failed to save: ' + (d.error || 'Unknown error'), 'error');
        }
      } catch(e) { window.showToast('Network error', 'error'); }
    },

    async deleteCurrentFile() {
      if (!this.filePath) return;
      if (!confirm('Delete ' + this.filePath + ' from ' + this.owner + '/' + this.repo + '?')) return;
      try {
        var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/file?path=' + encodeURIComponent(this.filePath) + '&sha=' + encodeURIComponent(this.fileSha) + '&message=' + encodeURIComponent('Delete via FlowDeck'), {
          method: 'DELETE',
        });
        if (r.ok) {
          this.showFile = false;
          this.filePath = '';
          await this.refreshTree();
        }
      } catch(e) {}
    },

    async refreshTree() {
      // Reload page to refresh sidebar tree
      window.location.reload();
    },

    formatSize(bytes) {
      if (!bytes) return '';
      if (bytes < 1024) return bytes + ' B';
      if (bytes < 1048576) return (bytes/1024).toFixed(1) + ' KB';
      return (bytes/1048576).toFixed(1) + ' MB';
    },

    // ── Private Pages ──

    async loadPrivatePages() {
      try {
        var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/private-pages');
        if (r.ok) { var d = await r.json(); this.privatePages = d.pages || []; }
      } catch(e) {}
    },

    newPrivate() {
      this.editingPrivate = 'new';
      this.editingPrivateTitle = '';
      this.editingPrivateContent = '';
    },

    async openPrivate(id) {
      try {
        var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/private-pages/' + id);
        if (r.ok) {
          var d = await r.json();
          this.editingPrivate = id;
          this.editingPrivateTitle = d.page.title;
          this.editingPrivateContent = d.page.content;
        }
      } catch(e) {}
    },

    async savePrivate() {
      var url = '/api/gitea/projects/' + this.owner + '/' + this.repo + '/private-pages';
      var method = 'POST';
      if (this.editingPrivate !== 'new') {
        url += '/' + this.editingPrivate;
        method = 'PUT';
      }
      try {
        var r = await fetch(url, {
          method, headers: {'Content-Type':'application/json','X-CSRF-Token': this.getCsrfToken ? this.getCsrfToken() : ''},
          body: JSON.stringify({title: this.editingPrivateTitle, content: this.editingPrivateContent})
        });
        if (r.ok) {
          this.editingPrivate = null;
          this.editingPrivateTitle = '';
          this.editingPrivateContent = '';
          await this.loadPrivatePages();
        }
      } catch(e) {}
    },

    // Create new file
    showNewFile: false,
    newFilePath: '',
    newFileContent: '',
    newFileMsg: 'Create via FlowDeck',
    async createNewFile() {
      if (!this.newFilePath.trim()) return;
      try {
        var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/file', {
          method: 'PUT',
          headers: {'Content-Type':'application/json', 'X-CSRF-Token': this.getCsrfToken()},
          body: JSON.stringify({path: this.newFilePath.trim(), content: this.newFileContent, message: this.newFileMsg || 'Create via FlowDeck'})
        });
        if (r.ok) {
          this.showNewFile = false;
          this.newFilePath = '';
          this.newFileContent = '';
          this.newFileMsg = 'Create via FlowDeck';
          await this.loadSidebarTree();
        } else {
          var d = await r.json();
          window.showToast('Failed: ' + (d.error || d.detail || 'Unknown error'), 'error');
        }
      } catch(e) { window.showToast('Error: ' + e.message, 'error'); }
    },

    // Upload files
    triggerUpload() { document.getElementById('gitea-upload-input').click(); },
    async doUpload(ev) {
      var files = ev.target.files;
      if (!files.length) return;
      for (var i = 0; i < files.length; i++) {
        var form = new FormData();
        form.append('file', files[i]);
        form.append('message', 'Upload ' + files[i].name + ' via FlowDeck');
        try {
          var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/upload', {
            method: 'POST',
            headers: {'X-CSRF-Token': this.getCsrfToken()},
            body: form
          });
          if (!r.ok) { var d = await r.json(); console.error('Upload failed:', d.error); }
        } catch(e) { console.error('Upload error:', e); }
      }
      await this.loadSidebarTree();
      ev.target.value = '';
    },

    async deletePrivate(id) {
      if (!confirm('Delete this private page?')) return;
      try {
        var r = await fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/private-pages/' + id, {
          method: 'DELETE', headers: {'X-CSRF-Token': this.getCsrfToken ? this.getCsrfToken() : ''}
        });
        if (r.ok) await this.loadPrivatePages();
      } catch(e) {}
    },

    getCsrfToken() {
      return document.cookie.split('; ').find(function(c) { return c.startsWith('csrf_token='); })?.split('=')[1] || '';
    },

    // ── Multi-selection ──
    multiSelect: false,
    selectedPaths: [],
    lastClickedPath: null,

    toggleMultiSelect() {
      this.multiSelect = !this.multiSelect;
      var cbs = document.querySelectorAll('.gitea-checkbox');
      var self = this;
      cbs.forEach(function(cb) { cb.style.display = self.multiSelect ? '' : 'none'; });
      if (!this.multiSelect) {
        // Clear selection when leaving multi-select mode
        cbs.forEach(function(cb) { cb.checked = false; });
        this.selectedPaths = [];
        this.lastClickedPath = null;
        // Remove selected class
        document.querySelectorAll('.sidebar-item.gitea-selected').forEach(function(el) {
          el.classList.remove('gitea-selected');
        });
      }
    },

    selectItem(path, li, ev) {
      if (ev.shiftKey && this.lastClickedPath) {
        // Range select
        var all = Array.from(document.querySelectorAll('.sidebar-item[data-gitea-path]'));
        var startIdx = all.findIndex(function(el) { return el.getAttribute('data-gitea-path') === this.lastClickedPath; }.bind(this));
        var endIdx = all.findIndex(function(el) { return el.getAttribute('data-gitea-path') === path; }.bind(this));
        if (startIdx >= 0 && endIdx >= 0) {
          var lo = Math.min(startIdx, endIdx);
          var hi = Math.max(startIdx, endIdx);
          this.selectedPaths = [];
          for (var i = lo; i <= hi; i++) {
            this.selectedPaths.push(all[i].getAttribute('data-gitea-path'));
            all[i].classList.add('gitea-selected');
            var cb = all[i].querySelector('.gitea-checkbox');
            if (cb) cb.checked = true;
          }
        }
        this.multiSelect = true;
        this.toggleMultiSelect(); // ensure checkboxes are visible
      } else if (ev.ctrlKey || ev.metaKey) {
        // Toggle single
        var idx = this.selectedPaths.indexOf(path);
        if (idx >= 0) {
          this.selectedPaths.splice(idx, 1);
          li.classList.remove('gitea-selected');
          var cb = li.querySelector('.gitea-checkbox');
          if (cb) cb.checked = false;
        } else {
          this.selectedPaths.push(path);
          li.classList.add('gitea-selected');
          var cb = li.querySelector('.gitea-checkbox');
          if (cb) cb.checked = true;
        }
        this.multiSelect = this.selectedPaths.length > 0;
        this.toggleMultiSelect();
      } else {
        // Normal select — clear multi-selection
        this.selectedPaths = [path];
        this.lastClickedPath = path;
        document.querySelectorAll('.sidebar-item.gitea-selected').forEach(function(el) {
          el.classList.remove('gitea-selected');
        });
        li.classList.add('gitea-selected', 'active');
        var cb = li.querySelector('.gitea-checkbox');
        if (cb) cb.checked = true;
      }
    },

    isSelected(path) {
      return this.selectedPaths.indexOf(path) >= 0;
    },

    // ── Inline rename ──
    startInlineRename(nameSpan, path, li) {
      var originalName = nameSpan.textContent;
      var input = document.createElement('input');
      input.type = 'text';
      input.value = originalName;
      input.className = 'inline-rename-input';
      input.style.cssText = 'flex:1;min-width:0;padding:2px 6px;background:var(--bg-tertiary);border:1px solid var(--accent);border-radius:4px;color:var(--text);font-size:13px;outline:none;';
      nameSpan.replaceWith(input);
      input.focus();
      input.select();
      var self = this;
      var finish = function() { self.finishInlineRename(input, originalName, path, li); };
      var cancel = function() {
        var span = document.createElement('span');
        span.className = 'page-name';
        span.textContent = originalName;
        input.replaceWith(span);
      };
      input.addEventListener('blur', finish);
      input.addEventListener('keydown', function(e) {
        if (e.key === 'Enter') finish();
        if (e.key === 'Escape') { e.stopPropagation(); cancel(); }
      });
    },

    finishInlineRename(input, originalName, path, li) {
      if (input._renaming) return; // guard against double-fire
      input._renaming = true;
      var newName = input.value.trim();
      if (!newName || newName === originalName) {
        var span = document.createElement('span');
        span.className = 'page-name';
        span.textContent = originalName;
        input.replaceWith(span);
        return;
      }
      var self = this;
      // Construct new path by replacing the last segment
      var parts = path.split('/');
      parts.pop();
      var newPath = (parts.length > 0 ? parts.join('/') + '/' : '') + newName;
      fetch('/api/gitea/projects/' + this.owner + '/' + this.repo + '/rename', {
        method: 'POST',
        headers: {'Content-Type': 'application/json', 'X-CSRF-Token': this.getCsrfToken()},
        body: JSON.stringify({old_path: path, new_path: newPath, new_name: newName})
      }).then(function(r) {
        if (r.ok) {
          self.refreshTree();
        } else {
          var span = document.createElement('span');
          span.className = 'page-name';
          span.textContent = originalName;
          input.replaceWith(span);
          window.showToast('Rename failed', 'error');
        }
      }).catch(function() {
        var span = document.createElement('span');
        span.className = 'page-name';
        span.textContent = originalName;
        input.replaceWith(span);
      });
    },
  };
}
</script>
{% endblock %}