mirror of https://github.com/jlelse/GoBlog
Reactions
parent
ddd097f809
commit
1e03474539
@ -0,0 +1,7 @@
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create table reactions (
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path text not null,
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reaction text not null,
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count integer default 0,
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primary key (path, reaction),
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foreign key (path) references posts(path) on update cascade on delete cascade
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);
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@ -0,0 +1,105 @@
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package main
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import (
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"encoding/json"
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"errors"
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"net/http"
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"github.com/samber/lo"
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"go.goblog.app/app/pkgs/bufferpool"
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"go.goblog.app/app/pkgs/contenttype"
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)
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// Hardcoded for now
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var allowedReactions = []string{
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"❤️",
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"👍",
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"🎉",
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"😂",
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"😱",
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}
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func (a *goBlog) reactionsEnabled() bool {
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return a.cfg.Reactions != nil && a.cfg.Reactions.Enabled
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}
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const reactionsPostParam = "reactions"
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func (a *goBlog) reactionsEnabledForPost(post *post) bool {
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return a.reactionsEnabled() && post != nil && post.firstParameter(reactionsPostParam) != "false"
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}
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func (a *goBlog) postReaction(w http.ResponseWriter, r *http.Request) {
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path := r.FormValue("path")
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reaction := r.FormValue("reaction")
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if path == "" || reaction == "" {
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a.serveError(w, r, "", http.StatusBadRequest)
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return
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}
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err := a.saveReaction(reaction, path)
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if err != nil {
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a.serveError(w, r, "", http.StatusBadRequest)
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return
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}
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}
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func (a *goBlog) saveReaction(reaction, path string) error {
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// Check if reaction is allowed
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if !lo.Contains(allowedReactions, reaction) {
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return errors.New("reaction not allowed")
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}
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// Insert reaction
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_, err := a.db.exec("insert into reactions (path, reaction, count) values (?, ?, 1) on conflict (path, reaction) do update set count=count+1", path, reaction)
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return err
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}
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func (a *goBlog) getReactions(w http.ResponseWriter, r *http.Request) {
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path := r.FormValue("path")
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reactions, err := a.getReactionsFromDatabase(path)
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if err != nil {
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a.serveError(w, r, "", http.StatusInternalServerError)
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return
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}
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buf := bufferpool.Get()
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defer bufferpool.Put(buf)
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err = json.NewEncoder(buf).Encode(reactions)
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if err != nil {
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a.serveError(w, r, "", http.StatusInternalServerError)
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return
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}
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w.Header().Set(contentType, contenttype.JSONUTF8)
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_ = a.min.Get().Minify(contenttype.JSON, w, buf)
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}
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func (a *goBlog) getReactionsFromDatabase(path string) (map[string]int, error) {
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sqlBuf := bufferpool.Get()
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defer bufferpool.Put(sqlBuf)
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sqlArgs := []any{}
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sqlBuf.WriteString("select reaction, count from reactions where path=? and reaction in (")
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sqlArgs = append(sqlArgs, path)
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for i, reaction := range allowedReactions {
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if i > 0 {
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sqlBuf.WriteString(",")
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}
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sqlBuf.WriteString("?")
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sqlArgs = append(sqlArgs, reaction)
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}
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sqlBuf.WriteString(") and path not in (select path from post_parameters where parameter=? and value=?)")
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sqlArgs = append(sqlArgs, reactionsPostParam, "false")
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rows, err := a.db.query(sqlBuf.String(), sqlArgs...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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reactions := map[string]int{}
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for rows.Next() {
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var reaction string
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var count int
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err = rows.Scan(&reaction, &count)
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if err != nil {
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return nil, err
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}
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reactions[reaction] = count
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}
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return reactions, nil
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}
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@ -0,0 +1,148 @@
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package main
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import (
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"net/http"
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"net/http/httptest"
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"net/url"
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"strings"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func Test_reactionsLowLevel(t *testing.T) {
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app := &goBlog{
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cfg: createDefaultTestConfig(t),
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}
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_ = app.initConfig()
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_ = app.initDatabase(false)
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defer app.db.close()
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app.initComponents(false)
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err := app.saveReaction("🖕", "/testpost")
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assert.ErrorContains(t, err, "not allowed")
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err = app.saveReaction("❤️", "/testpost")
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assert.ErrorContains(t, err, "constraint failed")
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// Create a post
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err = app.createPost(&post{
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Path: "/testpost",
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Content: "test",
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Status: statusPublished,
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})
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require.NoError(t, err)
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// Create 4 reactions
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for i := 0; i < 4; i++ {
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err = app.saveReaction("❤️", "/testpost")
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assert.NoError(t, err)
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}
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// Check if reaction count is 4
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reacts, err := app.getReactionsFromDatabase("/testpost")
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require.NoError(t, err)
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assert.Equal(t, 1, len(reacts))
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assert.Equal(t, 4, reacts["❤️"])
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// Change post path
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err = app.replacePost(&post{
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Path: "/newpost",
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Content: "test",
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Status: statusPublished,
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}, "/testpost", statusPublished)
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require.NoError(t, err)
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// Check if reaction count is 4
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reacts, err = app.getReactionsFromDatabase("/newpost")
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require.NoError(t, err)
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assert.Equal(t, 1, len(reacts))
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assert.Equal(t, 4, reacts["❤️"])
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// Delete post
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err = app.deletePost("/newpost")
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require.NoError(t, err)
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err = app.deletePost("/newpost")
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require.NoError(t, err)
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// Check if reaction count is 0
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reacts, err = app.getReactionsFromDatabase("/newpost")
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require.NoError(t, err)
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assert.Equal(t, 0, len(reacts))
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// Create a post with disabled reactions
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err = app.createPost(&post{
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Path: "/testpost2",
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Content: "test",
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Status: statusPublished,
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Parameters: map[string][]string{
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"reactions": {"false"},
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},
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})
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require.NoError(t, err)
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// Create reaction
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err = app.saveReaction("❤️", "/testpost2")
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require.NoError(t, err)
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// Check if reaction count is 0
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reacts, err = app.getReactionsFromDatabase("/testpost2")
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require.NoError(t, err)
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assert.Equal(t, 0, len(reacts))
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}
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func Test_reactionsHighLevel(t *testing.T) {
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app := &goBlog{
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cfg: createDefaultTestConfig(t),
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}
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_ = app.initConfig()
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_ = app.initDatabase(false)
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defer app.db.close()
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app.initComponents(false)
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// Send unsuccessful reaction
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form := url.Values{
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"reaction": {"❤️"},
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"path": {"/testpost"},
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}
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req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(form.Encode()))
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req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
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rec := httptest.NewRecorder()
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app.postReaction(rec, req)
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assert.Equal(t, http.StatusBadRequest, rec.Code)
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// Create a post
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err := app.createPost(&post{
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Path: "/testpost",
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Content: "test",
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})
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require.NoError(t, err)
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// Send successful reaction
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form = url.Values{
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"reaction": {"❤️"},
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"path": {"/testpost"},
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}
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req = httptest.NewRequest(http.MethodPost, "/", strings.NewReader(form.Encode()))
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req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
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rec = httptest.NewRecorder()
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app.postReaction(rec, req)
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assert.Equal(t, http.StatusOK, rec.Code)
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// Check if reaction count is 1
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req = httptest.NewRequest(http.MethodGet, "/?path=/testpost", nil)
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rec = httptest.NewRecorder()
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app.getReactions(rec, req)
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assert.Equal(t, http.StatusOK, rec.Code)
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assert.Equal(t, `{"❤️":1}`, rec.Body.String())
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// Get reactions for a non-existing post
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req = httptest.NewRequest(http.MethodGet, "/?path=/non-existing-post", nil)
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rec = httptest.NewRecorder()
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app.getReactions(rec, req)
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assert.Equal(t, http.StatusOK, rec.Code)
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assert.Equal(t, `{}`, rec.Body.String())
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}
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@ -0,0 +1,54 @@
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(function () {
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// Get reactions element
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let reactions = document.querySelector('#reactions')
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// Get post path
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let path = reactions.dataset.path
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// Define update counts function
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let updateCounts = function () {
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// Fetch reactions json
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fetch('/-/reactions?path=' + encodeURI(path))
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.then(response => response.json())
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.then(json => {
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// For every reaction
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for (let reaction in json) {
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// Get reaction buttons
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let button = document.querySelector('#reactions button[data-reaction="' + reaction + '"]')
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// Set reaction count
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button.innerText = reaction + ' ' + json[reaction]
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}
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})
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}
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// Get allowed reactions
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let allowed = reactions.dataset.allowed.split(',')
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allowed.forEach(allowedReaction => {
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// Create reaction button
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let button = document.createElement('button')
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button.dataset.reaction = allowedReaction
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// Set click event
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button.addEventListener('click', function () {
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// Send reaction to server
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let data = new FormData()
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data.append('path', path)
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data.append('reaction', allowedReaction)
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fetch('/-/reactions', { method: 'POST', body: data })
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.then(updateCounts)
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})
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// Set reaction text
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button.innerText = allowedReaction
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// Add button to reactions element
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reactions.appendChild(button)
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})
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// Update reaction counts
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updateCounts()
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})()
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