1 files changed, 45 insertions, 5 deletions

diff --git a/vrsite/static.go b/vrsite/static.go
index 7d31b1d..b299975 100644
--- a/vrsite/static.go
+++ b/vrsite/static.go
@@ -13,6 +13,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"runtime"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -31,7 +32,7 @@ func run(dir string, name string, args ...string) []byte {
 	return out
 }
 
-func buildSite(logPath, repoAbs, out, title string, theme, light *Theme) {
+func buildSite(logPath, repoAbs, out, title string, theme, light *Theme, themes *themeSet) {
 	start := time.Now()
 	entries := readLog(logPath)
 	ranked := buildModel(title, entries, "").Ranked
@@ -80,7 +81,7 @@ func buildSite(logPath, repoAbs, out, title string, theme, light *Theme) {
 		fatal("tar: %v", err)
 	}
 
-	writeSite(site, out, tmp)
+	writeSite(site, out, tmp, themes)
 	stubs := 0
 	for _, f := range site.All {
 		if f.Stub != "" {
@@ -92,8 +93,12 @@ func buildSite(logPath, repoAbs, out, title string, theme, light *Theme) {
 		time.Since(start).Round(time.Millisecond), out)
 }
 
-func writeSite(site *Site, out, srcDir string) {
-	tpl := newTemplates()
+func writeSite(site *Site, out, srcDir string, themes *themeSet) {
+	if themes == nil {
+		themes = &themeSet{}
+	}
+	hl := newHighlighter(site.Theme, site.Light)
+	tpl := newTemplates(hl)
 	if err := os.MkdirAll(out, 0o755); err != nil {
 		fatal("%v", err)
 	}
@@ -113,7 +118,6 @@ func writeSite(site *Site, out, srcDir string) {
 	}
 	// phase A: content — coverage percentages must exist before any tree
 	// or index below is written
-	hl := newHighlighter(site.Theme, site.Light)
 	each(func(f *File) {
 		src, err := os.ReadFile(filepath.Join(srcDir, f.Path))
 		switch {
@@ -142,6 +146,13 @@ func writeSite(site *Site, out, srcDir string) {
 			fatal("%v", err)
 		}
 	}
+	// the picker travels with the export: a <script src>/<link> pair loads
+	// from the filesystem, which is why the menu is a script and not JSON
+	for name, b := range map[string][]byte{"themes.css": themes.CSS, "themes.js": themes.JS} {
+		if err := os.WriteFile(filepath.Join(out, name), b, 0o644); err != nil {
+			fatal("%v", err)
+		}
+	}
 
 	// shared tree fragment: the only nav tree, fetched by every page; "@@" is
 	// replaced with the page root by app.js, since the fragment is fetched
@@ -196,6 +207,35 @@ func writeSite(site *Site, out, srcDir string) {
 		render(dst, &page{Kind: "file", Title: f.Path + " — " + site.Title,
 			Root: strings.Repeat("../", depth), Current: f.Path, File: f})
 	})
+
+	// phase C: a page per note, so a permalink handed to someone else opens
+	// in the export exactly as it does in the live app. The source is read
+	// again rather than kept from phase A: an export is a batch job, and the
+	// alternative is holding every file in memory for the sake of a few
+	// hundred excerpts.
+	if err := os.MkdirAll(filepath.Join(out, "note"), 0o755); err != nil {
+		fatal("%v", err)
+	}
+	for _, n := range site.Notes {
+		p := &page{Kind: "note", Title: noteTitle(n) + " — " + site.Title,
+			Root: "../", Current: n.File, Note: n, Thread: site.NoteThread(n.ID)}
+		if n.File != "" && n.Start > 0 {
+			src, err := os.ReadFile(filepath.Join(srcDir, n.File))
+			switch {
+			case err != nil:
+				p.ExErr = "not present in the archived commit"
+			case bytes.IndexByte(src, 0) >= 0:
+				p.ExErr = "binary file — not rendered"
+			default:
+				var cov []uint8
+				if f, ok := site.Files[n.File]; ok {
+					cov = f.Cov
+				}
+				p.Excerpt, p.ExFrom, p.ExTo = excerptFor(n.File, src, cov, hl, n)
+			}
+		}
+		render(filepath.Join(out, "note", strconv.Itoa(n.ID)+".html"), p)
+	}
 }
 
 func mustCreate(path string) *os.File {