From 29e244c48222278c2f255ff2adf45e3af7c9f895 Mon Sep 17 00:00:00 2001
From: Lukasz Kasprzak <lukas@labunix.xyz>
Date: Fri, 24 Jul 2026 16:50:45 +0200
Subject: export: internal/export (Markdown/Text/ReadingsPDF via pure-Go
 go-pdf/fpdf + embedded DejaVu Sans, covers pl/la/gr); cli --md/--pdf/--out;
 web /export + download links; v0.22.0

---
 internal/web/server.go | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'internal/web/server.go')

diff --git a/internal/web/server.go b/internal/web/server.go
index 006bbdb..45ab06f 100644
--- a/internal/web/server.go
+++ b/internal/web/server.go
@@ -25,6 +25,7 @@ import (
 	"github.com/lukaszkasprzak/lectio/internal/bible"
 	"github.com/lukaszkasprzak/lectio/internal/bookmarks"
 	"github.com/lukaszkasprzak/lectio/internal/config"
+	"github.com/lukaszkasprzak/lectio/internal/export"
 	"github.com/lukaszkasprzak/lectio/internal/i18n"
 	"github.com/lukaszkasprzak/lectio/internal/liturgy"
 	"github.com/lukaszkasprzak/lectio/internal/readings"
@@ -67,6 +68,7 @@ func NewServer(cfg config.Config) http.Handler {
 	mux := http.NewServeMux()
 	mux.HandleFunc("GET /{$}", func(w http.ResponseWriter, r *http.Request) { indexHandler(s.get())(w, r) })
 	mux.HandleFunc("GET /readings", func(w http.ResponseWriter, r *http.Request) { readingsHandler(s.get())(w, r) })
+	mux.HandleFunc("GET /export", func(w http.ResponseWriter, r *http.Request) { exportHandler(s.get())(w, r) })
 	mux.HandleFunc("GET /reader", func(w http.ResponseWriter, r *http.Request) { readerHandler(s.get(), s.table())(w, r) })
 	mux.HandleFunc("GET /theme.css", func(w http.ResponseWriter, r *http.Request) { themeCSSHandler(s.get())(w, r) })
 	mux.HandleFunc("GET /settings", settingsGet(s))
@@ -337,6 +339,48 @@ func readingsHandler(cfg config.Config) http.HandlerFunc {
 	}
 }
 
+// exportHandler serves GET /export?fmt=txt|md|pdf: the current day's readings
+// as a downloadable file (Content-Disposition attachment), reusing the same
+// date/lectionary/all/version resolution as the reading pane.
+func exportHandler(cfg config.Config) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		date, lectionary, all, versions, _ := resolveQuery(cfg, r)
+		secs, dayInfo, loadVersions, err := loadSections(cfg, lectionary, date, all, versions)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		if len(secs) == 0 {
+			http.Error(w, i18n.Get(cfg.UILanguage).NoReadingsDay, http.StatusNotFound)
+			return
+		}
+		version := cfg.DefaultVersion
+		if len(loadVersions) > 0 {
+			version = loadVersions[0]
+		}
+
+		switch r.URL.Query().Get("fmt") {
+		case "pdf":
+			data, perr := export.ReadingsPDF(date, dayInfo, secs, version, lectionary, cfg.UILanguage)
+			if perr != nil {
+				http.Error(w, perr.Error(), http.StatusInternalServerError)
+				return
+			}
+			w.Header().Set("Content-Type", "application/pdf")
+			w.Header().Set("Content-Disposition", `attachment; filename="lectio-`+date+`.pdf"`)
+			w.Write(data)
+		case "md":
+			w.Header().Set("Content-Type", "text/markdown; charset=utf-8")
+			w.Header().Set("Content-Disposition", `attachment; filename="lectio-`+date+`.md"`)
+			io.WriteString(w, export.Markdown(date, dayInfo, secs, version, lectionary, cfg.UILanguage))
+		default:
+			w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+			w.Header().Set("Content-Disposition", `attachment; filename="lectio-`+date+`.txt"`)
+			io.WriteString(w, export.Text(date, dayInfo, secs, version, lectionary, cfg.UILanguage))
+		}
+	}
+}
+
 // renderOrError returns RenderReadings' fragment, or (on a readings.Load
 // error, or no sections at all for the date) a small escaped error
 // paragraph, localised via lang -- readings.Load errors are expected in
-- 
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