Add: Installer

installer/REAME.md

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+https://gowebexamples.com/forms/
+https://astaxie.gitbooks.io/build-web-application-with-golang/content/en/04.1.html

installer/css/style.css

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+* { font-family:Arial;}
+body { background:#000; color:#fff; margin:0 10vw;}
+h1,h2,h3 {padding:12px 10px;color:#0f0;}
+strong {color:#0f0;}
+p { padding:12px 10px;}
+p.error {background:#f00;}
+input { border:0; background-color:transparent;color:#fff;border-bottom:1px solid #fff; margin-bottom:24px; padding:12px 10px; width:100%;}
+input[type=submit] { border:0;font-size:1.2em; cursor:pointer; background:#fff;color:#000;transition:0.1s;}
+input[type=submit]:hover { background:#0f0;}
+footer { font-size:0.8em; padding:12px 10px; opacity:0.8;}

installer/main.go

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+package main
+
+import (
+    "html/template"
+    "net/http"
+		"fmt"
+		"encoding/json"
+		"io/ioutil"
+		"regexp"
+		"strings"
+		"os"
+		"time"
+)
+
+type InstallerConfig struct {
+	Title				string `json:"title"`
+	BaseUrl			string `json:"baseurl"`
+	Server			ServerConfig `json:"server"`
+	UploadPath	string	`json:"upload_path"`
+	LogLevel		string	`json:"log_level"`
+	LogPath			string	`json:"log_path"`
+	DB					DBConfig `json:"db"`
+	AdminEmail	string `json:"admin_email"`
+}
+
+type	ServerConfig struct {
+		Host			string	`json:"host"`
+		Port			int			`json:"port"`
+}
+
+type DBConfig struct {
+		Dialec		string	`json:"dialect"`
+		Storage		string	`json:"storage"`
+		Logging		bool		`json:"logging"`
+}
+
+type Message struct {
+	Success bool
+	Title string
+	BaseUrl string
+	Email string
+	Errors map[string]string
+}
+
+var rxEmail = regexp.MustCompile(".+@.+\\..+")
+var rxUrl = regexp.MustCompile(`^(?:https?:\/\/)?(?:[^@\/\n]+@)?(?:www\.)?([^:\/\n]+)`)
+var CONFIG_PATH = "/data/config.json"
+var DB_PATH = "/data/db.sqlite"
+var UPLOADS_PATH = "/data/uploads"
+var LOGS_PATH = "/data/logs"
+
+func main() {
+		fmt.Println("Gancio Installer")
+    tmpl := template.Must(template.ParseFiles("templates/_base.html","templates/install.html"))
+		http.Handle("/css/", http.StripPrefix("/css/", http.FileServer(http.Dir("./css"))))
+
+    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+
+				msg := Message{}
+
+				if r.Method != http.MethodPost {
+					// TODO: GET INSTANCE URL FROM DOCKER GANCIO
+					msg.BaseUrl = "https://intancia.convoca.la"
+					msg.Success = false
+          tmpl.ExecuteTemplate(w,"base",msg)
+          return
+        }
+
+				// Validation
+				msg.Errors = make(map[string]string)
+				msg.Email = r.FormValue("adminemail")
+				msg.Title = r.FormValue("title")
+				msg.BaseUrl = r.FormValue("url")
+				msg.Success = false
+
+				// Email
+				match := rxEmail.Match([]byte(msg.Email))
+				if match == false {
+					msg.Errors["Email"] = "Introduce una dirección de correo correcta"
+          tmpl.ExecuteTemplate(w,"base",msg)
+          return
+				}
+
+				// Url
+				match = rxUrl.Match([]byte(msg.BaseUrl))
+				if match == false {
+					msg.Errors["BaseUrl"] = "Introduce una URL correcta"
+          tmpl.ExecuteTemplate(w,"base",msg)
+          return
+				}
+
+				// Title
+				if strings.TrimSpace(msg.Title) == "" {
+					msg.Errors["Title"] = "Introduce un nombre para tu instancia"
+          tmpl.ExecuteTemplate(w,"base",msg)
+          return
+				}
+
+				// Gancio Config
+				serverConfig := ServerConfig{
+					Host: "0.0.0.0",
+					Port: 13120,
+				}
+
+				dbConfig := DBConfig{
+					Dialec: "sqlite",
+					Storage: DB_PATH,
+					Logging: false,
+				}
+
+        gancioConfig := InstallerConfig{
+            Title: r.FormValue("title"),
+            BaseUrl:   r.FormValue("url"),
+						Server: serverConfig,
+						UploadPath: UPLOADS_PATH,
+						LogLevel: "debug",
+						LogPath: LOGS_PATH,
+						DB: dbConfig,
+						AdminEmail: msg.Email,
+        }
+
+				// Write file
+				file, err := json.MarshalIndent(gancioConfig, "", " ")
+				err = ioutil.WriteFile(CONFIG_PATH, file, 0644)
+
+				if err!=nil {
+					msg.Errors["WriteConfig"] = "Fallo al escribir el fichero de configuracion"
+          tmpl.ExecuteTemplate(w,"base",msg)
+          return
+				}
+
+				// Success
+				msg.Success = true
+        tmpl.ExecuteTemplate(w,"base",msg)
+
+				//Bye
+				go func() {
+					time.Sleep(10 * time.Second)
+					os.Exit(3)
+				}()
+
+    })
+
+		fmt.Println("Runing server http://localhost:8080")
+    http.ListenAndServe(":8080", nil)
+}

installer/templates/_base.html

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+{{define "base"}}
+<!DOCTYPE html>
+<html lang="es">
+	<head>
+		<link href="/css/style.css" rel="stylesheet">
+	</head>
+	<body>
+		<h1>Herramienta de configuración de Gancio</h1>
+{{template "content" .}}
+		<footer>
+			Sindominio 2021 - https://sindominio.net
+		</footer>
+</body>
+</html>
+{{end}}

installer/templates/install.html

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+{{define "content"}}
+
+<!-- forms.html -->
+{{with .Errors.Email}}
+<p class="error">{{.}}</p>
+{{end}}
+{{with .Errors.Title}}
+<p class="error">{{.}}</p>
+{{end}}
+{{with .Errors.BaseUrl}}
+<p class="error">{{.}}</p>
+{{end}}
+{{with .Errors.WriteConfig}}
+<p class="error">{{.}}</p>
+{{end}}
+
+
+{{if .Success}}
+    <h2>Instalación completada</h2>
+		<p>¡Felicidades! Tu instancia <strong>{{.Title}}</strong> ha sido configurada correctamente.</p>
+		<p>Un correo electrónico ha sido enviado a <strong>{{.Email}}</strong> con los pasos para recuperar la contraseña de administración.</p>
+		<p>En breve podrás acceder a <strong>{{.BaseUrl}}</strong> para publicar los eventos.</p>
+		<p>Disfruta de un café y vuelve en <span id="timeout">.</span> segundos</p>
+				<script>
+					let timeout = 30;
+					document.getElementById("timeout").innerHTML = timeout;
+					function countdown(n) {
+						document.getElementById("timeout").innerHTML = n;
+						if (n > 0) {
+								n = n-1; 
+								setTimeout(()=>{countdown(n)}, 1000);
+						} else {
+							window.location.reload(); 
+						} 
+					}
+					let idt = setTimeout(()=>{countdown(timeout)},1000);
+				</script>
+	{{else}}
+    <form method="POST">
+        <label>Correo electrónico de administración:</label><br />
+				<input type="email" name="adminemail" placeholder="gancio@sindominio.net" value="{{.Email}}"><br />
+        <label>Nombre de la instáncia:</label><br />
+				<input type="text" name="title" placeholder="Gancio Instance" value="{{.Title}}"><br />
+        <label>Dirección:</label><br />
+				<input readonly="true" id="url" type="url" name="url" placeholder="https://gancio.convoca.la" value="{{.BaseUrl}}"><br />
+        <input type="submit" value="Finalizar instalación">
+    </form>
+				<script>
+					document.getElementById("url").value = window.location.href;
+				</script>
+{{end}}
+
+{{end}}