add combine image logic (#14)

* add combine image logic * remove unnecessary log
2021-09-06 18:56:59 +08:00
parent d1253478a7
commit c7a35c4744
5 changed files with 72 additions and 16 deletions
@@ -1,5 +1,32 @@
---
--- Generated by EmmyLua(https://github.com/EmmyLua)
--- Created by moicen.
--- DateTime: 2021/9/4 12:28
---
+local uuid      = require "resty.jit-uuid"
+local cjson     = require "cjson"
+uuid.seed()
+
+local file_dir = ngx.var.tmp_file_dir
+ngx.req.read_body()
+local req_body = cjson.decode(ngx.req.get_body_data())
+
+local data = req_body["data"]
+local combined = file_dir .. "/" .. uuid.generate_v4() .. ".jpeg";
+local len = table.getn(data)
+local origin = {}
+for i = 1, len do
+    origin[i] = file_dir .. "/" .. data[i] .. " "
+end
+-- in linux
+local magick = "/usr/local/ImageMagick/bin/magick"
+local tmp = io.open(magick,"r")
+if tmp == nil then
+    -- in mac os
+    magick = "/usr/local/bin/magick"
+else
+    io.close(tmp)
+end
+local file = io.popen(magick .. " convert -append " .. table.concat(origin, " ") .. " " .. combined)
+file:read("*all")
+file:close()
+file = io.open(combined)
+local content = file:read("*all")
+file:close()
+os.remove(combined)
+ngx.say(content)