update

scripts/combine.lua

@@ -2,34 +2,44 @@
 --package.path = package.path .. ';/usr/local/opt/openresty/nginx/scripts/?.lua';
 package.path = package.path .. ';<SCRIPT_PATH>/?.lua';
 
+-- Requires
 local uuid = require "resty.jit-uuid"
 local cjson = require "cjson"
 local pl = require "pl.pretty"
-
 local http = require "resty.http"
 local verify = require('lib.jwt_verify')
 
+-- Verify token
 local httpc = http:new()
 local authHeader = ngx.req.get_headers().Authorization
 local sudoerToken = ngx.req.get_headers().HtySudoerToken
-
 verify(httpc, authHeader, sudoerToken)
-
 uuid.seed()
 
+-- Get ngx var
 local file_dir = ngx.var.tmp_file_dir
+
+-- Read request body
 ngx.req.read_body()
 local req_body = cjson.decode(ngx.req.get_body_data())
 ngx.log(ngx.INFO, 'REQ_BODY -> ', ngx.req.get_body_data())
-local image_origin = read_body["payload"]["image_origin"]
+
 local images = req_body["payload"]["images"]
 
-ngx.log(ngx.INFO, "IMAGE ORIGIN -> ", image_origin)
+local image_origin = read_body["payload"]["image_origin"]
 
-local combined_uuid = uuid.generate_v4()
+-- Judge payload image origin
-local output_filename = combined_uuid .. ".jpeg";
+if image_origin == "WX" then
-local output_filepath = file_dir .. "/" .. output_filename
+    ngx.log(ngx.INFO, "IMAGE ORIGIN -> ", image_origin)
+elseif image_origin == "LOCAL" then
+    ngx.log(ngx.INFO, "IMAGE ORIGIN -> ", image_origin)
+else
+    ngx.status = 400
+    ngx.log(ngx.ERR, "COMBINE REQUEST PAYLOAD IMAGES ORIGIN NOT FOUND.")
+    return
+end
 
+-- Judge payload images para length
 local len = table.getn(images)
 if len == 0 then
     ngx.status = 500
@@ -37,6 +47,20 @@ if len == 0 then
     return ;
 end
 
+-- If combine images from WX
+local wx_download_images = {}
+if image_origin == "WX" then
+    for i = 1, len do
+        ngx.log(ngx.INFO, "DOWNLOAD WX URL -> ", images[i])
+        wx_download_images[i] = get_wx_media(httpc,  images[i], cjson, pl);
+    end
+end
+
+-- Prepare combined file name and path
+local combined_uuid = uuid.generate_v4()
+local output_filename = combined_uuid .. ".jpeg";
+local output_filepath = file_dir .. "/" .. output_filename
+
 local origin = {}
 
 -- 从 nginx 变量取
@@ -53,11 +77,15 @@ for i = 1, len do
     local incoming
 
     if image_origin == "WX" then
-        ngx.log(ngx.INFO, "DOWNLOAD WX FILE -> ", images[i])
+        ngx.log(ngx.INFO, "DOWNLOAD WX FILE -> ", wx_download_images[i])
-        incoming = get_wx_media(httpc,  images[i], cjson, pl);
+        incoming = wx_download_images[i]
-    else
+    elseif image_origin == "LOCAL" then
-        ngx.log(ngx.INFO, "COMBINE FILE -> ", images[i])
+        ngx.log(ngx.INFO, "LOCAL FILE -> ", images[i])
         incoming = file_dir .. "/" .. images[i]
+    else
+        ngx.status = 400
+        ngx.log(ngx.ERR, "COMBINE REQUEST PAYLOAD IMAGES ORIGIN NOT FOUND.")
+        return
     end
 
     origin[i] = incoming .. ".png "