const { getLayout } = require('../../utils/layout');
const { api, API_BASE, getImageUrl, uploadFileCompat } = require('../../utils/request');

var MOOD_OPTIONS = ['😊', '🥰', '😢', '😤', '😴', '🤩', '🥺', '😎', '🤔', '😭', '😋', '😌'];
var WEATHER_OPTIONS = ['☀️', '⛅', '☁️', '🌧️', '⛈️', '❄️', '🌤️', '🌥️', '🌈', '🌪️', '🌫️', '🌙'];

Page({
  onResize: function() { this.setData(getLayout()); },
  data: {
    editorContent: '', loading: true, loadError: false,
    diaryId: 0,
    form: { title: '', content: '' },
    tempImages: [],
    existingImages: [],
    submitting: false,
    contentLength: 0
  },

  onLoad: function(options) {
    this.setData(getLayout());
    var id = options.id;
    if (!id) {
      wx.showToast({ title: '参数错误', icon: 'none' });
      return;
    }
    this.setData({ diaryId: parseInt(id) });
    this.loadDiary();
  },

  loadDiary: async function() {
    if (this._pageLoading) return;
    this._pageLoading = true;
    this.setData({loading:true, loadError:false});
    try {
      var data = await api.diaryDetail(this.data.diaryId);
      var title = data.title || '';
      var content = data.content || '';
      var imgs = data.images || [];
      if (typeof imgs === 'string') {
        try { imgs = JSON.parse(imgs); } catch(e) { imgs = []; }
      }
      if (!Array.isArray(imgs)) imgs = [];
      var tempImages = imgs.map(function(p) { return getImageUrl(p); });
      this.setData({
        'form.title': title,
        'form.content': content,
        editorContent: content,
        'form.lat': data.lat || 0,
        'form.lng': data.lng || 0,
        'form.location': data.location || '',
        tempImages: tempImages,
        existingImages: imgs,
        contentLength: content.length
      });
    } catch (e) {
      this.setData({loadError:true});
      wx.showToast({ title: '加载日记失败', icon: 'none' });
    }
    finally { this._pageLoading = false; this.setData({loading:false}); }
  },

  onTitleInput: function(e) {
    this.setData({ 'form.title': e.detail.value });
  },
  onContentInput: function(e) {
    var val = e.detail.value || '';
    // 正文只存于逻辑层，避免每次敲字回传长文本影响原生输入。
    this.data.form.content = val;
    this.setData({ contentLength: val.length });
  },

  chooseImages: function() {
    var self = this;
    wx.chooseImage({
      count: 9 - this.data.tempImages.length,
      sizeType: ['compressed'],
      sourceType: ['album', 'camera'],
      success: function(res) {
        self.setData({ tempImages: self.data.tempImages.concat(res.tempFilePaths) });
      }
    });
  },

  // ===== 删除单张图片 =====
  removeImage: function(e) {
    var index = parseInt(e.currentTarget.dataset.index);
    var images = this.data.tempImages;
    var existing = this.data.existingImages;
    images.splice(index, 1);
    existing.splice(index, 1);
    this.setData({ tempImages: images, existingImages: existing });
  },

  submit: async function() {
    if (this.data.loading || this.data.loadError) return;
    if (this.data.submitting) return;
    var content = this.data.form.content;
    if (!content || !content.trim()) {
      wx.showToast({ title: '请填写日记内容', icon: 'none' });
      return;
    }
    this.setData({ submitting: true });

    try {
      var uploadPaths = [];
      var existing = this.data.existingImages || [];
      var temps = this.data.tempImages || [];

      // 判断哪些是新上传的图片（tempFilePaths 以 http 开头的是已有图片，否则是新选的）
      for (var i = 0; i < temps.length; i++) {
        var p = temps[i];
        if (p.indexOf('http') === 0) {
          // 已有图片，用原始路径
          uploadPaths.push(existing[i] || '');
        } else {
          // 新图片，需要上传
          wx.showLoading({ title: '上传图片中...' });
          var res = await this._uploadImage(p);
          wx.hideLoading();
          if (res) uploadPaths.push(res);
        }
      }

      await api.diaryUpdate({
        id: this.data.diaryId,
        title: this.data.form.title || '',
        content: content.trim(),
        images: uploadPaths,
        // 保留原有地理位置（编辑时位置不变）
        lat: this.data.form.lat || 0,
        lng: this.data.form.lng || 0,
        location: this.data.form.location || ''
      });

      // 清除详情页缓存

      wx.showToast({ title: '修改成功 ✨', icon: 'success' });
      setTimeout(function() { wx.navigateBack(); }, 1500);
    } catch (e) {
      wx.hideLoading();
      wx.showToast({ title: (e && (e.error || e.message || e.errMsg)) || '修改失败', icon: 'none' });
    } finally {
      this.setData({ submitting: false });
    }
  },

  _uploadImage: async function(filePath) {
    try {
      var data = await uploadFileCompat({
        url: API_BASE + '/upload',
        filePath: filePath,
        name: 'file',
        formData: { sub_dir: 'diaries' }
      });
      var path = data && (data.path || data.url || '');
      if (!path) {
        // 内容安全检测失败：抛出错误提示用户
        if (data && data.error) {
          throw data;
        }
        try {
          var retryData = await uploadFileCompat({
            url: API_BASE + '/upload',
            filePath: filePath,
            name: 'file',
            formData: { sub_dir: 'diaries' }
          });
          path = retryData && (retryData.path || retryData.url || '');
        } catch(retryErr) {
          console.error('图片上传重试失败', retryErr);
        }
      }
      return path;
    } catch(e) {
      // 内容安全违规错误：直接抛出，中断发布并提示用户
      if (e && e.error) {
        throw e;
      }
      console.error('图片上传失败', e);
      return '';
    }
  },

  goBack: function() {
    wx.navigateBack();
  }
});