private async Task ReplyImageCarouselAsync(string replyToken, string blobDirectoryName)
{
var columns = BlobStorage.ListBlobUri(blobDirectoryName)
.Select(uri =>
new ImageCarouselColumn(uri.ToString(),
new MessageTemplateAction(uri.Segments.Last(), $"I selected image {uri.Segments.Last()}!"))).ToList();
if (columns.Count == 0)
{
await MessagingClient.ReplyMessageAsync(replyToken, "Upload image for \"Carousel Message\".");
return;
}
var template = new ImageCarouselTemplate(columns);
await MessagingClient.ReplyMessageAsync(replyToken, new[] { new TemplateMessage("imageCarousel", template) });
}
public static async Task <HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = null)] HttpRequestMessage req, TraceWriter log)
{
try
{
var channelSecret = System.Configuration.ConfigurationManager.AppSettings["ChannelSecret"];
var events = await req.GetWebhookEventsAsync(channelSecret);
var connectionString = System.Configuration.ConfigurationManager.AppSettings["AzureWebJobsStorage"];
var botStatus = await TableStorage <BotStatus> .CreateAsync(connectionString, "botstatus");
var blobStorage = await BlobStorage.CreateAsync(connectionString, "linebotcontainer");
var app = new LineBotApp(lineMessagingClient, botStatus, blobStorage, log);
/* To run sample apps in the samples directory, comment out the above line and cancel this comment out.
* var app = await AppSwitcher.SwitchAppsAsync(events,lineMessagingClient, botStatus, blobStorage, log);
* //*/
await app.RunAsync(events);
}
catch (InvalidSignatureException e)
{
return(req.CreateResponse(HttpStatusCode.Forbidden, new { e.Message }));
}
catch (LineResponseException e)
{
log.Error(e.ToString());
var debugUserId = System.Configuration.ConfigurationManager.AppSettings["DebugUser"];
if (debugUserId != null)
{
await lineMessagingClient.PushMessageAsync(debugUserId, $"{e.StatusCode}({(int)e.StatusCode}), {e.ResponseMessage.ToString()}");
}
}
catch (Exception e)
{
log.Error(e.ToString());
var debugUserId = System.Configuration.ConfigurationManager.AppSettings["DebugUser"];
if (debugUserId != null)
{
await lineMessagingClient.PushMessageAsync(debugUserId, e.Message);
}
}
return(req.CreateResponse(HttpStatusCode.OK));
}
private async Task UploadImageAsync(string replyToken, string messageId, string blobDirectoryName)
{
var imageStream = await MessagingClient.GetContentStreamAsync(messageId);
var image = Image.FromStream(imageStream);
var imageCount = BlobStorage.ListBlobUri(blobDirectoryName).Count();
if (imageCount == 5)
{
await BlobStorage.DeleteDirectoryAsync(blobDirectoryName);
imageCount = 0;
}
await BlobStorage.UploadImageAsync(image, blobDirectoryName, (imageCount + 1) + ".jpeg");
await MessagingClient.ReplyMessageAsync(replyToken, $"Image uploaded ({imageCount + 1}).");
}
private async Task ReplyImagemapAsync(string replyToken, string messageId, string blobDirectoryName)
{
var imageStream = await MessagingClient.GetContentStreamAsync(messageId);
var image = Image.FromStream(imageStream);
using (var g = Graphics.FromImage(image))
{
g.DrawLine(Pens.Red, image.Width / 2, 0, image.Width / 2, image.Height);
g.DrawLine(Pens.Red, 0, image.Height / 2, image.Width, image.Height / 2);
}
var uri = await UploadImageAsync(1040);
await UploadImageAsync(700);
await UploadImageAsync(460);
await UploadImageAsync(300);
await UploadImageAsync(240);
var imageSize = new ImagemapSize(1024, (int)(1040 * (double)image.Height / image.Width));
var areaWidth = imageSize.Width / 2;
var areaHeight = imageSize.Height / 2;
var imagemapMessage = new ImagemapMessage(uri.ToString().Replace("/1040", ""),
"Sample Imagemap",
imageSize,
new IImagemapAction[] {
new MessageImagemapAction(new ImagemapArea(0, 0, areaWidth, areaHeight), "Area Top-Left"),
new MessageImagemapAction(new ImagemapArea(areaWidth, 0, areaWidth, areaHeight), "Area Top-Right"),
new MessageImagemapAction(new ImagemapArea(0, areaHeight, areaWidth, areaHeight), "Area Bottom-Left"),
new MessageImagemapAction(new ImagemapArea(areaWidth, areaHeight, areaWidth, areaHeight), "Area Bottom-Right"),
});
await MessagingClient.ReplyMessageAsync(replyToken, new[] { imagemapMessage });
async Task <Uri> UploadImageAsync(int baseSize)
{
var img = image.GetThumbnailImage(baseSize, image.Height * baseSize / image.Width, () => false, IntPtr.Zero);
return(await BlobStorage.UploadImageAsync(img, blobDirectoryName + "/" + messageId, baseSize.ToString()));
}
}
public ImagemapSampleApp(LineMessagingClient lineMessagingClient, BlobStorage blobStorage, TraceWriter log)
{
MessagingClient = lineMessagingClient;
BlobStorage = blobStorage;
Log = log;
}
protected override async Task OnMessageAsync(MessageEvent ev)
{
var msg = ev.Message as TextEventMessage;
if (msg == null)
{
return;
}
switch (msg.Text)
{
case "Rectangle-Cover":
await ReplyCarouselTemplateMessageAsync(ev.ReplyToken, ImageAspectRatioType.Rectangle, ImageSizeType.Cover);
break;
case "Square-Contain":
await ReplyCarouselTemplateMessageAsync(ev.ReplyToken, ImageAspectRatioType.Square, ImageSizeType.Contain);
break;
case "Square-Cover":
await ReplyCarouselTemplateMessageAsync(ev.ReplyToken, ImageAspectRatioType.Square, ImageSizeType.Cover);
break;
case "Rectangle-Contein":
default:
await ReplyCarouselTemplateMessageAsync(ev.ReplyToken, ImageAspectRatioType.Rectangle, ImageSizeType.Contain);
break;
}
async Task ReplyCarouselTemplateMessageAsync(string replyToken, ImageAspectRatioType imageAspectRatio, ImageSizeType imageSize)
{
var imageUri = BlobStorage.ListBlobUri(blobDirectoryName).FirstOrDefault(uri => uri.ToString().EndsWith(imageName));
if (imageUri == null)
{
imageUri = await BlobStorage.UploadImageAsync(Properties.Resources.sample_image, blobDirectoryName, imageName);
}
var defaultAction = new MessageTemplateAction("Default-Action", "Default-Action");
var templateMessage = new TemplateMessage("CarouselTemplate",
new CarouselTemplate(new[]
{
new CarouselColumn(
imageAspectRatio + "-" + imageSize,
imageUri.ToString(),
"Test of thumbnail image settings",
new [] { new MessageTemplateAction("Rectangle-Contain", "Rectangle-Contain") },
"#FF0000",
defaultAction),
new CarouselColumn(
imageAspectRatio + "-" + imageSize,
imageUri.ToString(),
"Test of thumbnail image settings",
new [] { new MessageTemplateAction("Rectangle-Cover", "Rectangle-Cover") },
"#00FF00",
defaultAction),
new CarouselColumn(
imageAspectRatio + "-" + imageSize,
imageUri.ToString(),
"Test of thumbnail image settings",
new [] { new MessageTemplateAction("Square-Contain", "Square-Contain") },
"#0000FF",
defaultAction),
new CarouselColumn(
imageAspectRatio + "-" + imageSize,
imageUri.ToString(),
"Test of thumbnail image settings",
new [] { new MessageTemplateAction("Square-Cover", "Square-Cover") },
"#FF00FF",
defaultAction)
},
imageAspectRatio,
imageSize));
await MessagingClient.ReplyMessageAsync(replyToken, new[] { templateMessage });
}
}
public CarouselTemplateSampleApp(LineMessagingClient lineMessagingClient, BlobStorage blobStorage, TraceWriter log)
{
MessagingClient = lineMessagingClient;
BlobStorage = blobStorage;
Log = log;
}
public LineBotApp(LineMessagingClient lineMessagingClient, TableStorage <BotStatus> tableStorage, BlobStorage blobStorage, TraceWriter log)
{
MessagingClient = lineMessagingClient;
SourceState = tableStorage;
BlobStorage = blobStorage;
Log = log;
}
public static async Task <WebhookApplication> SwitchAppsAsync(IEnumerable <WebhookEvent> events, LineMessagingClient line, TableStorage <BotStatus> botStatus, BlobStorage blobStorage, TraceWriter log)
{
var ev = events.First();
var status = await botStatus.FindAsync(ev.Source.Type.ToString(), ev.Source.Id);
if (status == null)
{
status = new BotStatus()
{
SourceType = ev.Source.Type.ToString(),
SourceId = ev.Source.Id,
CurrentApp = "@"
};
}
var message = (ev as MessageEvent)?.Message as TextEventMessage;
var text = message?.Text;
if (text == null || !text.StartsWith("@"))
{
text = status.CurrentApp;
}
text = text.Trim().ToLower();
WebhookApplication app = null;
if (text != "@richmenu")
{
try
{
await line.UnLinkRichMenuFromUserAsync(ev.Source.Id);
}
catch (LineResponseException e)
{
if (e.StatusCode != HttpStatusCode.NotFound)
{
throw;
}
}
}
switch (text)
{
case "@":
app = new LineBotApp(line, botStatus, blobStorage, log);
break;
case "@buttons":
app = new ButtonsTemplateSampleApp(line, blobStorage, log);
break;
case "@carousel":
app = new CarouselTemplateSampleApp(line, blobStorage, log);
break;
case "@postback":
app = new PostbackMessageSampleApp(line, botStatus, log);
break;
case "@imagemap":
app = new ImagemapSampleApp(line, blobStorage, log);
break;
case "@imagecarousel":
app = new ImageCarouselSampleApp(line, blobStorage, log);
break;
case "@datetime":
app = new DateTimePickerSampleApp(line, log);
break;
case "@richmenu":
app = new RichMenuSampleApp(line, log);
break;
default:
text = "@";
app = new LineBotApp(line, botStatus, blobStorage, log);
break;
}
status.CurrentApp = text;
await botStatus.UpdateAsync(status);
return(app);
}
