chore: import upstream snapshot with attribution

internal/install/install_server.go

@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package install
+
+import (
+	"embed"
+	"fmt"
+	"io/fs"
+	"net/http"
+
+	"github.com/apache/answer/configs"
+	"github.com/apache/answer/internal/base/conf"
+	"github.com/apache/answer/ui"
+	"github.com/gin-gonic/gin"
+	"github.com/segmentfault/pacman/log"
+	"gopkg.in/yaml.v3"
+)
+
+const UIStaticPath = "build/static"
+
+type _resource struct {
+	fs embed.FS
+}
+
+// Open to implement the interface by http.FS required
+func (r *_resource) Open(name string) (fs.File, error) {
+	name = fmt.Sprintf(UIStaticPath+"/%s", name)
+	log.Debugf("open static path %s", name)
+	return r.fs.Open(name)
+}
+
+// NewInstallHTTPServer new install http server.
+func NewInstallHTTPServer() *gin.Engine {
+	gin.SetMode(gin.ReleaseMode)
+	r := gin.New()
+
+	c := &conf.AllConfig{}
+	_ = yaml.Unmarshal(configs.Config, c)
+
+	r.GET("/healthz", func(ctx *gin.Context) { ctx.String(200, "OK") })
+	r.StaticFS(c.UI.BaseURL+"/static", http.FS(&_resource{
+		fs: ui.Build,
+	}))
+
+	// read default config file and extract ui config
+	installApi := r.Group("")
+	installApi.GET(c.UI.BaseURL+"/", CheckConfigFileAndRedirectToInstallPage)
+	installApi.GET(c.UI.BaseURL+"/install", WebPage)
+	installApi.GET(c.UI.BaseURL+"/50x", WebPage)
+	installApi.GET(c.UI.APIBaseURL+"/installation/language/config", GetLangMapping)
+	installApi.GET(c.UI.APIBaseURL+"/installation/language/options", LangOptions)
+	installApi.POST(c.UI.APIBaseURL+"/installation/db/check", CheckDatabase)
+	installApi.POST(c.UI.APIBaseURL+"/installation/config-file/check", CheckConfigFile)
+	installApi.POST(c.UI.APIBaseURL+"/installation/init", InitEnvironment)
+	installApi.POST(c.UI.APIBaseURL+"/installation/base-info", InitBaseInfo)
+
+	r.NoRoute(func(ctx *gin.Context) {
+		ctx.Redirect(http.StatusFound, "/50x")
+	})
+	return r
+}
+
+func WebPage(c *gin.Context) {
+	filePath := ""
+	var file []byte
+	var err error
+	filePath = "build/index.html"
+	c.Header("content-type", "text/html;charset=utf-8")
+	file, err = ui.Build.ReadFile(filePath)
+	if err != nil {
+		log.Error(err)
+		c.Status(http.StatusNotFound)
+		return
+	}
+	c.String(http.StatusOK, string(file))
+}