rename to datastar-ep-1 and cp datastar-ep-2

datastar-ep-2/go.mod

@@ -0,0 +1,15 @@
+module datastar
+
+go 1.25.2
+
+require (
+	github.com/starfederation/datastar-go v1.0.3
+	github.com/zepyrshut/hrender v0.0.0-20251208222655-1e403e42aac7
+)
+
+require (
+	github.com/CAFxX/httpcompression v0.0.9 // indirect
+	github.com/andybalholm/brotli v1.2.0 // indirect
+	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+)

datastar-ep-2/go.sum

@@ -0,0 +1,35 @@
+github.com/CAFxX/httpcompression v0.0.9 h1:0ue2X8dOLEpxTm8tt+OdHcgA+gbDge0OqFQWGKSqgrg=
+github.com/CAFxX/httpcompression v0.0.9/go.mod h1:XX8oPZA+4IDcfZ0A71Hz0mZsv/YJOgYygkFhizVPilM=
+github.com/andybalholm/brotli v1.0.5/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
+github.com/andybalholm/brotli v1.2.0 h1:ukwgCxwYrmACq68yiUqwIWnGY0cTPox/M94sVwToPjQ=
+github.com/andybalholm/brotli v1.2.0/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/google/brotli/go/cbrotli v0.0.0-20230829110029-ed738e842d2f/go.mod h1:nOPhAkwVliJdNTkj3gXpljmWhjc4wCaVqbMJcPKWP4s=
+github.com/klauspost/compress v1.16.7/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
+github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
+github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
+github.com/klauspost/pgzip v1.2.6/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs=
+github.com/pierrec/lz4/v4 v4.1.18/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/starfederation/datastar-go v1.0.3 h1:DnzgsJ6tDHDM6y5Nxsk0AGW/m8SyKch2vQg3P1xGTcU=
+github.com/starfederation/datastar-go v1.0.3/go.mod h1:stm83LQkhZkwa5GzzdPEN6dLuu8FVwxIv0w1DYkbD3w=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/ulikunitz/xz v0.5.11/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
+github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
+github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
+github.com/valyala/gozstd v1.20.1/go.mod h1:y5Ew47GLlP37EkTB+B4s7r6A5rdaeB7ftbl9zoYiIPQ=
+github.com/zepyrshut/hrender v0.0.0-20251204134824-5eb5dc8eaf21 h1:jUfJj+Ymdd9krHUt3YzBxR5kFoRAp+RD3u4Yir/KSGQ=
+github.com/zepyrshut/hrender v0.0.0-20251204134824-5eb5dc8eaf21/go.mod h1:KxR0Cisj52sFFxMTm3o+OJWBqP/khUpA1bjjc49iAiM=
+github.com/zepyrshut/hrender v0.0.0-20251204145920-50fdd9cb5ff1 h1:Zpay8/pWw++3B/QXsGbF3eTI1z2tGynguQWAnERIg9c=
+github.com/zepyrshut/hrender v0.0.0-20251204145920-50fdd9cb5ff1/go.mod h1:KxR0Cisj52sFFxMTm3o+OJWBqP/khUpA1bjjc49iAiM=
+github.com/zepyrshut/hrender v0.0.0-20251208222655-1e403e42aac7 h1:qVpI47wId0u0dTMk8QHGaiml2vWzDjsFgCDr0JnyOCg=
+github.com/zepyrshut/hrender v0.0.0-20251208222655-1e403e42aac7/go.mod h1:KxR0Cisj52sFFxMTm3o+OJWBqP/khUpA1bjjc49iAiM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

datastar-ep-2/main.go

@@ -0,0 +1,176 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"sort"
+	"strconv"
+
+	"github.com/starfederation/datastar-go/datastar"
+	"github.com/zepyrshut/hrender"
+)
+
+type TodoList struct {
+	ID        int
+	Name      string
+	Completed bool
+}
+
+var todoList = []TodoList{
+	{
+		ID:        1,
+		Name:      "Sacar a la perra",
+		Completed: false,
+	},
+	{
+		ID:        2,
+		Name:      "Limpiar la casa",
+		Completed: false,
+	},
+	{
+		ID:        3,
+		Name:      "Ir al supermercado",
+		Completed: false,
+	},
+}
+
+type TodoSignals struct {
+	NewTodoName string `json:"newtodo"`
+}
+
+func main() {
+	templatesFS := os.DirFS("./templates")
+
+	h := hrender.NewHTMLRender(templatesFS, false)
+
+	mux := http.NewServeMux()
+	mux.Handle("GET /", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set(hrender.ContentType, hrender.ContentTextHTMLUTF8)
+		err := h.RenderW(w, "pages/index", hrender.H{})
+		if err != nil {
+			http.Error(w, "error loading template", http.StatusInternalServerError)
+		}
+	}))
+
+	mux.Handle("GET /todo", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		sort.Slice(todoList, func(i, j int) bool {
+			return todoList[i].ID > todoList[j].ID
+		})
+
+		templ, err := h.RenderS("fragments/todo-widget", hrender.H{
+			"TodoList": todoList,
+		})
+		if err != nil {
+			http.Error(w, "error loading template", http.StatusInternalServerError)
+		}
+
+		sse := datastar.NewSSE(w, r)
+		if err := sse.PatchElements(templ); err != nil {
+			log.Println("error", err)
+		}
+	}))
+
+	mux.Handle("GET /todo/new", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		templ, err := h.RenderS("fragments/todo-row-edit", hrender.H{})
+		if err != nil {
+			http.Error(w, "error loading template", http.StatusInternalServerError)
+		}
+
+		sse := datastar.NewSSE(w, r)
+		if err := sse.PatchElements(templ,
+			datastar.WithModePrepend(),
+			datastar.WithSelectorID("todo-list-body"),
+		); err != nil {
+			log.Println("error", err)
+		}
+	}))
+
+	mux.Handle("POST /todo", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var signals TodoSignals
+		if err := datastar.ReadSignals(r, &signals); err != nil {
+			http.Error(w, err.Error(), http.StatusBadRequest)
+		}
+
+		newID := 0
+		sort.Slice(todoList, func(i, j int) bool {
+			return todoList[i].ID > todoList[j].ID
+		})
+		newID = todoList[0].ID + 1
+
+		newItem := TodoList{
+			ID:        newID,
+			Name:      signals.NewTodoName,
+			Completed: false,
+		}
+
+		todoList = append(todoList, newItem)
+
+		templ, _ := h.RenderS("fragments/todo-row", hrender.H{
+			"ID":        newID,
+			"Name":      newItem.Name,
+			"Completed": false,
+		})
+
+		sse := datastar.NewSSE(w, r)
+
+		if err := sse.PatchElements(templ,
+			datastar.WithModeReplace(),
+			datastar.WithSelectorID("new-todo-row"),
+		); err != nil {
+			http.Error(w, "bad request", http.StatusBadRequest)
+			return
+		}
+
+		signals.NewTodoName = ""
+		sse.MarshalAndPatchSignals(signals)
+	}))
+
+	mux.Handle("PATCH /todo/{id}/completed", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		log.Println("patch todo triggered")
+
+		idStr := r.PathValue("id")
+		id, err := strconv.Atoi(idStr)
+		if err != nil {
+			http.Error(w, "invalid id", http.StatusBadRequest)
+			return
+		}
+
+		var foundItem *TodoList
+		for i := range todoList {
+			if todoList[i].ID == id {
+				todoList[i].Completed = true
+				foundItem = &todoList[i]
+				break
+			}
+		}
+
+		if foundItem == nil {
+			http.Error(w, "item not found", http.StatusNotFound)
+			return
+		}
+
+		templ, err := h.RenderS("fragments/todo-row", hrender.H{
+			"ID":        foundItem.ID,
+			"Name":      foundItem.Name,
+			"Completed": true,
+		})
+		if err != nil {
+			http.Error(w, "error loading template", http.StatusInternalServerError)
+		}
+
+		sse := datastar.NewSSE(w, r)
+		if err := sse.PatchElements(templ, datastar.WithModeOuter(),
+			datastar.WithSelectorID(fmt.Sprintf("todo-%d", id)),
+		); err != nil {
+			http.Error(w, "error", http.StatusInternalServerError)
+		}
+	}))
+
+	log.Println("server started on port 8080")
+	err := http.ListenAndServe(":8080", mux)
+	if err != nil {
+		panic(fmt.Sprintf("server cannot start %v", err))
+	}
+}

datastar-ep-2/templates/fragments/todo-row-edit.html

@@ -0,0 +1,12 @@
+<li id="new-todo-row">
+  <form data-on-submit="@post('/todo')">
+    <input
+      type="text"
+      name="name"
+      data-bind-newtodo
+      placeholder="Nueva tarea..."
+      autofocus
+    />
+    <button type="submit">enviar</button>
+  </form>
+</li>

datastar-ep-2/templates/fragments/todo-row.html

@@ -0,0 +1,15 @@
+<li id="todo-{{ .ID }}">
+  <button
+    {{
+    if
+    .Completed
+    }}
+    disabled
+    {{
+    end
+    }}
+    data-on-click="@patch('/todo/{{.ID}}/completed')"
+  >
+    {{ .ID }} {{ .Name }} - {{ .Completed }}
+  </button>
+</li>

datastar-ep-2/templates/fragments/todo-widget.html

@@ -0,0 +1,9 @@
+<div id="todo-container">
+  <h2>Listado de tareas</h2>
+
+  <button data-on-click="@get('/todo/new')">Nueva tarea</button>
+
+  <ol id="todo-list-body">
+    {{ range .TodoList }} {{ template "fragments/todo-row" . }} {{ end }}
+  </ol>
+</div>

datastar-ep-2/templates/pages/index.html

@@ -0,0 +1,15 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>Lista de tareas</title>
+    <script
+      type="module"
+      src="https://cdn.jsdelivr.net/gh/starfederation/datastar@main/bundles/datastar.js"
+    ></script>
+  </head>
+  <body>
+    <div data-on-load="@get('/todo')" id="todo-container">Cargando...</div>
+  </body>
+</html>