use tectonic, refactor codebase

Author: gardenerik

.gitignore

@@ -0,0 +1 @@
+.idea/

Dockerfile

@@ -1,9 +1,9 @@
-FROM golang:1.18-bullseye as build
+FROM golang:1.21-bookworm as build
 WORKDIR /build
 COPY . .
 RUN go build -o letter
 
-FROM texlive/texlive:latest
+FROM dxjoke/tectonic-docker:latest
 WORKDIR /app
 RUN adduser texuser
 USER texuser

README.md

@@ -11,11 +11,11 @@ Designed to be run in a Docker container.
 
 ## Usage
 
-Letter accepts input files in uncompressed `.tar` archive. This archive should contain
-all resources needed for your document. Letter builds the document with LuaLaTeX
+Letter accepts input files in a `.zip` archive. This archive should contain
+all resources needed for your document. Letter builds the document with [Tectonic](https://tectonic-typesetting.github.io/en-US/)
 and provides you with the resulting PDF file.
 
-### Synchornous API `POST /sync`
+### Synchronous API `POST /sync`
 
 This endpoint builds the PDF synchronously and sends it in the HTTP response.
 Expects multipart form request with the following fields:
@@ -24,7 +24,7 @@ Expects multipart form request with the following fields:
 
 On success, Letter returns the generated PDF file. When an error happens,
 Letter returns JSON response containing `error` (error description)
-and `tex_output` (LuaLaTeX log).
+and `tectonic_output` (Tectonic log).
 
 ### Asynchronous API `POST /async`
 
@@ -34,7 +34,7 @@ Expects the same fields as the synchronous API, plus:
 
 The callback URL will receive a POST request from Letter with multipart data:
 - `file` - the resulting PDF
-- `tex_output` - LuaLaTeX log
+- `tectonic_output` - Tectonic log
 - `error` - error description (if available)
 
 ### Authentication
@@ -52,6 +52,5 @@ this can be changed using `PORT` environment variable.
 
 ### Requirements
 
-- GoLang 1.18 (or newer) 
-- latexmk
-- lualatex
+- GoLang 1.21 (or newer) 
+- Tectonic

go.mod

@@ -1,26 +1,37 @@
 module naboj.org/letter
 
-go 1.18
+go 1.21
 
-require github.com/gin-gonic/gin v1.8.1
+require (
+	code.cloudfoundry.org/archiver v0.0.0-20240409162627-dfb032b3bdac
+	github.com/gin-gonic/gin v1.9.1
+)
 
 require (
+	github.com/bytedance/sonic v1.11.3 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
+	github.com/chenzhuoyu/iasm v0.9.1 // indirect
+	github.com/cyphar/filepath-securejoin v0.2.4 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
-	github.com/go-playground/locales v0.14.0 // indirect
-	github.com/go-playground/universal-translator v0.18.0 // indirect
-	github.com/go-playground/validator/v10 v10.10.0 // indirect
-	github.com/goccy/go-json v0.9.7 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.19.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/leodido/go-urn v1.2.1 // indirect
-	github.com/mattn/go-isatty v0.0.14 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/pelletier/go-toml/v2 v2.0.1 // indirect
-	github.com/ugorji/go/codec v1.2.7 // indirect
-	golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 // indirect
-	golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
-	golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069 // indirect
-	golang.org/x/text v0.3.6 // indirect
-	google.golang.org/protobuf v1.28.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.0 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
+	golang.org/x/arch v0.7.0 // indirect
+	golang.org/x/crypto v0.22.0 // indirect
+	golang.org/x/net v0.24.0 // indirect
+	golang.org/x/sys v0.19.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,86 +1,98 @@
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main.go

@@ -1,26 +1,14 @@
 package main
 
 import (
-	"github.com/gin-gonic/gin"
 	"log"
-	"naboj.org/letter/web"
-	"os"
+	"naboj.org/letter/pkg"
 )
 
 func main() {
-	gin.SetMode(gin.ReleaseMode)
-
-	r := gin.New()
-	r.Use(gin.Recovery())
-
-	token, present := os.LookupEnv("AUTH_TOKEN")
-	if !present {
-		log.Println("AUTH_TOKEN is not configured, authentication is disabled.")
-	} else {
-		r.Use(web.AuthHandler(token))
+	r := pkg.NewRouter()
+	err := r.Run()
+	if err != nil {
+		log.Panic(err)
 	}
-
-	r.POST("/sync", web.GenerateSynchronously)
-	r.POST("/async", web.GenerateAsynchronously)
-	r.Run()
 }