From 090e484e72117c22c5afca2d35877b4948a1c176 Mon Sep 17 00:00:00 2001
From: Asaf Gartner <asaf@handmadedev.org>
Date: Wed, 23 Jun 2021 23:13:22 +0300
Subject: [PATCH] Snippet page

---
 src/templates/src/snippet.html |  27 ++++++++
 src/templates/types.go         |   1 +
 src/website/routes.go          |   1 +
 src/website/snippet.go         | 117 +++++++++++++++++++++++++++++++++
 src/website/timeline_helper.go |   3 +
 5 files changed, 149 insertions(+)
 create mode 100644 src/templates/src/snippet.html
 create mode 100644 src/website/snippet.go

diff --git a/src/templates/src/snippet.html b/src/templates/src/snippet.html
new file mode 100644
index 00000000..79d00153
--- /dev/null
+++ b/src/templates/src/snippet.html
@@ -0,0 +1,27 @@
+{{ template "base.html" . }}
+
+{{ define "content" }}
+<div class="content-block">
+    <div class="flex flex-column pa3 mb2 br3">
+        <div class="mb2 flex items-center">
+            <img class="avatar-icon lite mr2" src="{{ .Snippet.OwnerAvatarUrl }}"/>
+			<a class="user" href="{{ .Snippet.OwnerUrl }}">{{ .Snippet.OwnerName }}</a>
+			<a class="tr" style="flex: 1 1 auto;" href="{{ .Snippet.Url }}">{{ timehtml (relativedate .Snippet.Date) .Snippet.Date }}</a>
+        </div>
+        <p class="mb2">{{ .Snippet.Description }}</p>
+        <div>
+			{{ if snippetimage .Snippet }}
+                <img src="{{ .Snippet.AssetUrl }}" />
+			{{ else if snippetvideo .Snippet }}
+                <video src="{{ .Snippet.AssetUrl }}" preload="metadata" controls />
+			{{ else if snippetaudio .Snippet }}
+                <audio src="{{ .Snippet.AssetUrl }}" controls />
+			{{ else if snippetyoutube .Snippet }}
+                <div class="mb3 aspect-ratio aspect-ratio--16x9">
+                    <iframe class="aspect-ratio--object" src="https://www.youtube-nocookie.com/embed/{{ .Snippet.YoutubeID }}" allow="accelerometer; encrypted-media; gyroscope;" allowfullscreen frameborder="0" />
+                </div>
+			{{ end }}
+        </div>
+    </div>
+</div>
+{{ end }}
diff --git a/src/templates/types.go b/src/templates/types.go
index 3f12f4f0..4b796440 100644
--- a/src/templates/types.go
+++ b/src/templates/types.go
@@ -246,6 +246,7 @@ type TimelineItem struct {
 	Width             int
 	Height            int
 	AssetUrl          string
+	MimeType          string
 	YoutubeID         string
 
 	Title       string
diff --git a/src/website/routes.go b/src/website/routes.go
index b5a6de44..e3e9a4ed 100644
--- a/src/website/routes.go
+++ b/src/website/routes.go
@@ -108,6 +108,7 @@ func NewWebsiteRoutes(conn *pgxpool.Pool, perfCollector *perf.PerfCollector) htt
 	mainRoutes.GET(hmnurl.RegexFeed, Feed)
 	mainRoutes.GET(hmnurl.RegexAtomFeed, AtomFeed)
 	mainRoutes.GET(hmnurl.RegexShowcase, Showcase)
+	mainRoutes.GET(hmnurl.RegexSnippet, Snippet)
 	mainRoutes.GET(hmnurl.RegexProjectIndex, ProjectIndex)
 	mainRoutes.GET(hmnurl.RegexUserProfile, UserProfile)
 
diff --git a/src/website/snippet.go b/src/website/snippet.go
new file mode 100644
index 00000000..aa6d744a
--- /dev/null
+++ b/src/website/snippet.go
@@ -0,0 +1,117 @@
+package website
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"git.handmade.network/hmn/hmn/src/db"
+	"git.handmade.network/hmn/hmn/src/models"
+	"git.handmade.network/hmn/hmn/src/oops"
+	"git.handmade.network/hmn/hmn/src/templates"
+)
+
+type SnippetData struct {
+	templates.BaseData
+	Snippet templates.TimelineItem
+}
+
+func Snippet(c *RequestContext) ResponseData {
+	snippetId := -1
+	snippetIdStr, found := c.PathParams["snippetid"]
+	if found && snippetIdStr != "" {
+		var err error
+		if snippetId, err = strconv.Atoi(snippetIdStr); err != nil {
+			return FourOhFour(c)
+		}
+	}
+	if snippetId < 1 {
+		return FourOhFour(c)
+	}
+
+	c.Perf.StartBlock("SQL", "Fetch snippet")
+	type snippetQuery struct {
+		Owner          models.User            `db:"owner"`
+		Snippet        models.Snippet         `db:"snippet"`
+		Asset          *models.Asset          `db:"asset"`
+		DiscordMessage *models.DiscordMessage `db:"discord_message"`
+	}
+	snippetQueryResult, err := db.QueryOne(c.Context(), c.Conn, snippetQuery{},
+		`
+		SELECT $columns
+		FROM
+			handmade_snippet AS snippet
+			INNER JOIN auth_user AS owner ON owner.id = snippet.owner_id
+			LEFT JOIN handmade_asset AS asset ON asset.id = snippet.asset_id
+			LEFT JOIN handmade_discordmessage AS discord_message ON discord_message.id = snippet.discord_message_id
+		WHERE snippet.id = $1
+		`,
+		snippetId,
+	)
+	if err != nil {
+		if errors.Is(err, db.ErrNoMatchingRows) {
+			return FourOhFour(c)
+		} else {
+			return ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to fetch snippet"))
+		}
+	}
+	c.Perf.EndBlock()
+
+	snippetData := snippetQueryResult.(*snippetQuery)
+
+	snippet := SnippetToTimelineItem(&snippetData.Snippet, snippetData.Asset, snippetData.DiscordMessage, &snippetData.Owner, c.Theme)
+
+	opengraph := []templates.OpenGraphItem{
+		templates.OpenGraphItem{Property: "og:site_name", Value: "Handmade.Network"},
+		templates.OpenGraphItem{Property: "og:type", Value: "article"},
+		templates.OpenGraphItem{Property: "og:url", Value: snippet.Url},
+		templates.OpenGraphItem{Property: "og:title", Value: fmt.Sprintf("Snippet by %s", snippet.OwnerName)},
+		templates.OpenGraphItem{Property: "og:description", Value: string(snippet.Description)},
+	}
+
+	if snippet.Type == templates.TimelineTypeSnippetImage {
+		opengraphImage := []templates.OpenGraphItem{
+			templates.OpenGraphItem{Property: "og:image", Value: snippet.AssetUrl},
+			templates.OpenGraphItem{Property: "og:image:width", Value: strconv.Itoa(snippet.Width)},
+			templates.OpenGraphItem{Property: "og:image:height", Value: strconv.Itoa(snippet.Height)},
+			templates.OpenGraphItem{Property: "og:image:type", Value: snippet.MimeType},
+			templates.OpenGraphItem{Name: "twitter:card", Value: "summary_large_image"},
+		}
+		opengraph = append(opengraph, opengraphImage...)
+	} else if snippet.Type == templates.TimelineTypeSnippetVideo {
+		opengraphVideo := []templates.OpenGraphItem{
+			templates.OpenGraphItem{Property: "og:video", Value: snippet.AssetUrl},
+			templates.OpenGraphItem{Property: "og:video:width", Value: strconv.Itoa(snippet.Width)},
+			templates.OpenGraphItem{Property: "og:video:height", Value: strconv.Itoa(snippet.Height)},
+			templates.OpenGraphItem{Property: "og:video:type", Value: snippet.MimeType},
+			templates.OpenGraphItem{Name: "twitter:card", Value: "player"},
+		}
+		opengraph = append(opengraph, opengraphVideo...)
+	} else if snippet.Type == templates.TimelineTypeSnippetAudio {
+		opengraphAudio := []templates.OpenGraphItem{
+			templates.OpenGraphItem{Property: "og:audio", Value: snippet.AssetUrl},
+			templates.OpenGraphItem{Property: "og:audio:type", Value: snippet.MimeType},
+			templates.OpenGraphItem{Name: "twitter:card", Value: "player"},
+		}
+		opengraph = append(opengraph, opengraphAudio...)
+	} else if snippet.Type == templates.TimelineTypeSnippetYoutube {
+		opengraphYoutube := []templates.OpenGraphItem{
+			templates.OpenGraphItem{Property: "og:video", Value: fmt.Sprintf("https://youtube.com/watch?v=%s", snippet.YoutubeID)},
+			templates.OpenGraphItem{Name: "twitter:card", Value: "player"},
+		}
+		opengraph = append(opengraph, opengraphYoutube...)
+	}
+
+	baseData := getBaseData(c)
+	baseData.OpenGraphItems = opengraph
+	var res ResponseData
+	err = res.WriteTemplate("snippet.html", SnippetData{
+		BaseData: baseData,
+		Snippet:  snippet,
+	}, c.Perf)
+	if err != nil {
+		return ErrorResponse(http.StatusInternalServerError, oops.New(err, "failed to render snippet template"))
+	}
+	return res
+}
diff --git a/src/website/timeline_helper.go b/src/website/timeline_helper.go
index 8a7c69bb..27e8f3cb 100644
--- a/src/website/timeline_helper.go
+++ b/src/website/timeline_helper.go
@@ -118,6 +118,7 @@ func SnippetToTimelineItem(snippet *models.Snippet, asset *models.Asset, discord
 	itemType := templates.TimelineTypeUnknown
 	youtubeId := ""
 	assetUrl := ""
+	mimeType := ""
 	width := 0
 	height := 0
 	discordMessageUrl := ""
@@ -142,6 +143,7 @@ func SnippetToTimelineItem(snippet *models.Snippet, asset *models.Asset, discord
 			itemType = templates.TimelineTypeSnippetAudio
 		}
 		assetUrl = hmnurl.BuildS3Asset(asset.S3Key)
+		mimeType = asset.MimeType
 		width = asset.Width
 		height = asset.Height
 	}
@@ -165,6 +167,7 @@ func SnippetToTimelineItem(snippet *models.Snippet, asset *models.Asset, discord
 		Width:             width,
 		Height:            height,
 		AssetUrl:          assetUrl,
+		MimeType:          mimeType,
 		YoutubeID:         youtubeId,
 	}
 }