gems: add pg, sequel, prawn, aws-sdk-s3 for invoicing

- pg + sequel: connect to the storage stack's Postgres.
- prawn + prawn-table: render invoice PDFs.
- aws-sdk-s3: upload PDFs to MinIO and mint presigned download URLs.

Also pulls libpq-dev into the Docker build (for the pg gem) and the
postgresql client lib into the Nix dev shell.

Dockerfile

@@ -2,6 +2,7 @@ FROM ruby:3.4-slim-bookworm
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
+    libpq-dev \
  && rm -rf /var/lib/apt/lists/*
 
 RUN groupadd -g 11000 asxpio \

Gemfile

@@ -12,6 +12,12 @@ gem 'erubi',           '~> 1.13'
 gem 'mail',            '~> 2.8'
 gem 'dotenv',          '~> 3.1'
 
+gem 'pg',              '~> 1.5'
+gem 'sequel',          '~> 5.86'
+gem 'prawn',           '~> 2.5'
+gem 'prawn-table',     '~> 0.2'
+gem 'aws-sdk-s3',      '~> 1.170'
+
 group :development do
   gem 'rerun', '~> 0.14'
 end

Gemfile.lock

@@ -1,7 +1,27 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    aws-eventstream (1.4.0)
+    aws-partitions (1.1253.0)
+    aws-sdk-core (3.249.0)
+      aws-eventstream (~> 1, >= 1.3.0)
+      aws-partitions (~> 1, >= 1.992.0)
+      aws-sigv4 (~> 1.9)
+      base64
+      bigdecimal
+      jmespath (~> 1, >= 1.6.1)
+      logger
+    aws-sdk-kms (1.128.0)
+      aws-sdk-core (~> 3, >= 3.248.0)
+      aws-sigv4 (~> 1.5)
+    aws-sdk-s3 (1.224.0)
+      aws-sdk-core (~> 3, >= 3.248.0)
+      aws-sdk-kms (~> 1)
+      aws-sigv4 (~> 1.5)
+    aws-sigv4 (1.12.1)
+      aws-eventstream (~> 1, >= 1.0.2)
     base64 (0.3.0)
+    bigdecimal (3.3.1)
     date (3.5.1)
     dotenv (3.2.0)
     erubi (1.13.1)
@@ -16,6 +36,7 @@ GEM
     ffi (1.17.4-x86_64-darwin)
     ffi (1.17.4-x86_64-linux-gnu)
     ffi (1.17.4-x86_64-linux-musl)
+    jmespath (1.6.2)
     listen (3.10.0)
       logger
       rb-fsevent (~> 0.10, >= 0.10.3)
@@ -27,6 +48,7 @@ GEM
       net-imap
       net-pop
       net-smtp
+    matrix (0.4.3)
     mini_mime (1.1.5)
     multi_json (1.21.1)
     mustermann (3.1.1)
@@ -40,6 +62,20 @@ GEM
     net-smtp (0.5.1)
       net-protocol
     nio4r (2.7.5)
+    pdf-core (0.10.0)
+    pg (1.6.3)
+    pg (1.6.3-aarch64-linux)
+    pg (1.6.3-aarch64-linux-musl)
+    pg (1.6.3-arm64-darwin)
+    pg (1.6.3-x86_64-darwin)
+    pg (1.6.3-x86_64-linux)
+    pg (1.6.3-x86_64-linux-musl)
+    prawn (2.5.0)
+      matrix (~> 0.4)
+      pdf-core (~> 0.10.0)
+      ttfunk (~> 1.8)
+    prawn-table (0.2.2)
+      prawn (>= 1.3.0, < 3.0.0)
     puma (6.6.1)
       nio4r (~> 2.0)
     rack (3.2.6)
@@ -57,6 +93,8 @@ GEM
       ffi (~> 1.0)
     rerun (0.14.0)
       listen (~> 3.0)
+    sequel (5.104.0)
+      bigdecimal
     sinatra (4.2.1)
       logger (>= 1.6.0)
       mustermann (~> 3.0)
@@ -72,6 +110,8 @@ GEM
       tilt (~> 2.0)
     tilt (2.7.0)
     timeout (0.6.1)
+    ttfunk (1.8.0)
+      bigdecimal (~> 3.1)
 
 PLATFORMS
   aarch64-linux-gnu
@@ -87,15 +127,20 @@ PLATFORMS
   x86_64-linux-musl
 
 DEPENDENCIES
+  aws-sdk-s3 (~> 1.170)
   dotenv (~> 3.1)
   erubi (~> 1.13)
   mail (~> 2.8)
+  pg (~> 1.5)
+  prawn (~> 2.5)
+  prawn-table (~> 0.2)
   puma (~> 6.6)
   rack (~> 3.2)
   rack-protection (~> 4.2)
   rack-session (~> 2.1)
   rackup (~> 2.3)
   rerun (~> 0.14)
+  sequel (~> 5.86)
   sinatra (~> 4.2)
   sinatra-contrib (~> 4.2)
 

flake.nix

@@ -18,6 +18,8 @@
           pkgs.openssl
           pkgs.zlib
           pkgs.libyaml
+          pkgs.postgresql.lib
+          pkgs.postgresql
         ];
 
         shellHook = ''