docs: update readme

README.md

@@ -1,7 +1,7 @@
 # Elaina ![Go](https://github.com/wuhan005/Elaina/workflows/Go/badge.svg) [![Go Report Card](https://goreportcard.com/badge/github.com/wuhan005/Elaina)](https://goreportcard.com/report/github.com/wuhan005/Elaina) ![Docker Image Size (latest by date)](https://img.shields.io/docker/image-size/wuhan005/elaina) ![Docker Image Version (latest by date)](https://img.shields.io/docker/v/wuhan005/elaina)
 
 <img align="right" src="elaina.gif" width="40%"/>
-Docker-based remote code runner.
+Container-based remote code runner.
 
 [简体中文](https://github.com/wuhan005/Elaina/blob/master/README_zh.md)
 
@@ -10,20 +10,19 @@ Docker-based remote code runner.
 ### Step 1: Install dependencies
 
 * [Docker](https://docs.docker.com/get-docker/) (v20.10.0 or higher)
+* [Postgres](https://www.postgresql.org/download/) (v13.1 or higher)
 
 ### Step 2: Pull internal docker images
 
-The [`docker/images/`](https://github.com/wuhan005/Elaina/tree/master/docker/images) folder provides the Dockerfile of
-the programming language runtime environment that Elaina supports.
-
 Use `docker pull` command to pull the images from DockerHub before you start running the Elaina. This operation only
 needs to be performed once.
 
 ```bash
-docker pull elainaruntime/golang
-docker pull elainaruntime/php
-docker pull elainaruntime/python
-docker pull elainaruntime/javascript
+docker pull glot/php:latest
+docker pull glot/python:latest
+docker pull glot/golang:latest
+docker pull glot/javascript:latest
+docker pull glot/c:latest
 ```
 
 ### Step 3: Build and start the Elaina server
@@ -42,30 +41,22 @@ go build .
 
 #### Set environment variables.
 
-Postgres database configuration.
-
 ```bash
-export PGPORT=5432
-export PGHOST=<REDACTED>
-export PGUSER=<REDACTED>
-export PGPASSWORD=<REDACTED>
-export PGDATABASE=<REDACTED>
-export PGSSLMODE=disable
+export APP_PASSWORD=<REDACTED>
+export RUNTIME_MODE=docker
+export POSTGRES_DSN=postgres://postgres:<REDACTED>@127.0.0.1:5432/elaina
 ```
 
 #### Run the Elaina server.
 
 ```bash
-# Set the web manager panel password.
-export APP_PASSWORD=<REDACTED>
-
 ./Elaina
 ```
 
 ### Step 4: Have fun!
 
-Visit `http://<your-host>:8080/m/` to login to the manager panel.
+Visit `http://<your-host>:8080/` to login to the manager panel.
 
 ## License
 
-MIT
+MIT License

README_zh.md

@@ -1,26 +1,25 @@
 # Elaina ![Go](https://github.com/wuhan005/Elaina/workflows/Go/badge.svg) [![Go Report Card](https://goreportcard.com/badge/github.com/wuhan005/Elaina)](https://goreportcard.com/report/github.com/wuhan005/Elaina) ![Docker Image Size (latest by date)](https://img.shields.io/docker/image-size/wuhan005/elaina) ![Docker Image Version (latest by date)](https://img.shields.io/docker/v/wuhan005/elaina)
 
 <img align="right" src="elaina.gif" width="40%"/>
-基于 Docker 的远程代码运行器。
+基于容器的远程代码运行器。
 
 ## 开始使用
 
 ### 步骤 1: 安装依赖
 
 * [Docker](https://docs.docker.com/get-docker/) (v20.10.0 或更高)
-* [Docker Compose](https://docs.docker.com/compose/install/) (v1.27.4 或更高)
+* [Postgres](https://www.postgresql.org/download/) (v13.1 或更高)
 
 ### 步骤 2: 拉取内置 Docker 镜像
 
-[`docker/images/`](https://github.com/wuhan005/Elaina/tree/master/docker/images) 文件夹内提供的 Elaina 所支持的编程语言运行环境。
-
 在运行 Elaina 前，请使用 `docker pull` 命令从 DockerHub 拉取这些镜像。该操作只需执行一次即可。
 
 ```bash
-docker pull elainaruntime/golang
-docker pull elainaruntime/php
-docker pull elainaruntime/python
-docker pull elainaruntime/javascript
+docker pull glot/php:latest
+docker pull glot/python:latest
+docker pull glot/golang:latest
+docker pull glot/javascript:latest
+docker pull glot/c:latest
 ```
 
 ### Step 3: 编译并启动 Elaina
@@ -39,30 +38,22 @@ go build .
 
 #### 设置环境变量
 
-Postgres 数据库配置。
-
 ```bash
-export PGPORT=5432
-export PGHOST=<REDACTED>
-export PGUSER=<REDACTED>
-export PGPASSWORD=<REDACTED>
-export PGDATABASE=<REDACTED>
-export PGSSLMODE=disable
+export APP_PASSWORD=<REDACTED>
+export RUNTIME_MODE=docker
+export POSTGRES_DSN=postgres://postgres:<REDACTED>@127.0.0.1:5432/elaina
 ```
 
 #### 运行 Elaina
 
 ```bash
-# 设置 Web 管理面板的密码
-export APP_PASSWORD=<REDACTED>
-
 ./Elaina
 ```
 
 ### 步骤 4: 走你！
 
-浏览器访问 `http://<your-host>:8080/m/` 来登录管理员面板。
+浏览器访问 `http://<your-host>:8080/` 来登录管理员面板。
 
 ## 开源协议
 
-MIT
+MIT License

internal/form/form.go

@@ -10,81 +10,36 @@ import (
 	"reflect"
 
 	"github.com/flamego/flamego"
-	"github.com/sirupsen/logrus"
 	"github.com/wuhan005/govalid"
-	"golang.org/x/text/language"
-)
-
-type ErrorCategory string
 
-const (
-	ErrorCategoryDeserialization ErrorCategory = "deserialization"
-	ErrorCategoryValidation      ErrorCategory = "validation"
+	"github.com/wuhan005/Elaina/internal/context"
 )
 
-type Error struct {
-	Category ErrorCategory
-	Error    error
-}
-
 func Bind(model interface{}) flamego.Handler {
 	// Ensure not pointer.
 	if reflect.TypeOf(model).Kind() == reflect.Ptr {
 		panic("form: pointer can not be accepted as binding model")
 	}
 
-	return flamego.ContextInvoker(func(c flamego.Context) {
+	return func(ctx context.Context) {
 		obj := reflect.New(reflect.TypeOf(model))
-		r := c.Request().Request
+		r := ctx.Request().Request
 		if r.Body != nil {
 			defer func() { _ = r.Body.Close() }()
 
 			if err := json.NewDecoder(r.Body).Decode(obj.Interface()); err != nil {
-				c.Map(Error{Category: ErrorCategoryDeserialization, Error: err})
-				if _, err := c.Invoke(errorHandler); err != nil {
-					panic("form: " + err.Error())
-				}
+				_ = ctx.Error(http.StatusBadRequest, "Failed to parse request body")
 				return
 			}
 		}
 
-		acceptLanguage := r.Header.Get("Accept-Language")
-		languageTags, _, _ := language.ParseAcceptLanguage(acceptLanguage)
-		languageTag := language.Chinese
-		if len(languageTags) > 0 {
-			languageTag = languageTags[0]
-		}
-
-		errors, ok := govalid.Check(obj.Interface(), languageTag)
+		errors, ok := govalid.Check(obj.Interface())
 		if !ok {
-			c.Map(Error{Category: ErrorCategoryValidation, Error: errors[0]})
-			if _, err := c.Invoke(errorHandler); err != nil {
-				panic("form: " + err.Error())
-			}
+			_ = ctx.Error(http.StatusBadRequest, errors[0].Error())
 			return
 		}
 
 		// Validation passed.
-		c.Map(obj.Elem().Interface())
-	})
-}
-
-func errorHandler(c flamego.Context, error Error) {
-	c.ResponseWriter().WriteHeader(http.StatusBadRequest)
-	c.ResponseWriter().Header().Set("Content-Type", "application/json; charset=utf-8")
-
-	var msg string
-	if error.Category == ErrorCategoryDeserialization {
-		msg = "invalid request body"
-	} else {
-		msg = error.Error.Error()
-	}
-
-	body := map[string]interface{}{
-		"msg": msg,
-	}
-	err := json.NewEncoder(c.ResponseWriter()).Encode(body)
-	if err != nil {
-		logrus.WithError(err).Error("Failed to encode response")
+		ctx.Map(obj.Elem().Interface())
 	}
 }