From 1726304559622bcd20c8e3b7006b41a09bada599 Mon Sep 17 00:00:00 2001
From: GGG <gggkiller2@gmail.com>
Date: Thu, 5 Dec 2024 19:18:03 -0300
Subject: [PATCH] nuget-to-json: init

---
 .../by-name/nu/nuget-to-json/nuget-to-json.sh | 119 ++++++++++++++++++
 pkgs/by-name/nu/nuget-to-json/package.nix     |  37 ++++++
 2 files changed, 156 insertions(+)
 create mode 100755 pkgs/by-name/nu/nuget-to-json/nuget-to-json.sh
 create mode 100644 pkgs/by-name/nu/nuget-to-json/package.nix

diff --git a/pkgs/by-name/nu/nuget-to-json/nuget-to-json.sh b/pkgs/by-name/nu/nuget-to-json/nuget-to-json.sh
new file mode 100755
index 000000000000..ff29f414d5b9
--- /dev/null
+++ b/pkgs/by-name/nu/nuget-to-json/nuget-to-json.sh
@@ -0,0 +1,119 @@
+#!@runtimeShell@
+# shellcheck shell=bash
+
+set -euo pipefail
+shopt -s nullglob
+
+export SSL_CERT_FILE=@cacert@/etc/ssl/certs/ca-bundle.crt
+export PATH="@binPath@:$PATH"
+# used for glob ordering of package names
+export LC_ALL=C
+
+if [ $# -eq 0 ]; then
+    >&2 echo "Usage: $0 <packages directory> [path to a file with a list of excluded packages] > deps.json"
+    exit 1
+fi
+
+pkgs=$1
+tmp=$(realpath "$(mktemp -td nuget-to-json.XXXXXX)")
+trap 'rm -r "$tmp"' EXIT
+
+excluded_list=$(realpath "${2:-/dev/null}")
+
+export DOTNET_NOLOGO=1
+export DOTNET_CLI_TELEMETRY_OPTOUT=1
+
+mapfile -t sources < <(dotnet nuget list source --format short | awk '/^E / { print $2 }')
+wait "$!"
+
+declare -a remote_sources
+declare -A base_addresses
+
+for index in "${sources[@]}"; do
+    if [[ -d "$index" ]]; then
+        continue
+    fi
+
+    remote_sources+=("$index")
+
+    base_address=$(
+        curl --compressed --netrc -fsL "$index" |
+            jq -r '.resources[] | select(."@type" == "PackageBaseAddress/3.0.0")."@id"'
+    )
+    if [[ ! "$base_address" == */ ]]; then
+        base_address="$base_address/"
+    fi
+    base_addresses[$index]="$base_address"
+done
+
+(
+    echo '['
+
+    first=true
+    cd "$pkgs"
+    for package in *; do
+        [[ -d "$package" ]] || continue
+        cd "$package"
+        for version in *; do
+            id=$(xmlstarlet sel -t -v /_:package/_:metadata/_:id "$version"/*.nuspec)
+
+            if grep -qxF "$id.$version.nupkg" "$excluded_list"; then
+                continue
+            fi
+
+            # packages in the nix store should have an empty metadata file
+            used_source="$(jq -r '.source // ""' "$version"/.nupkg.metadata)"
+            found=false
+
+            if [[ -z "$used_source" || -d "$used_source" ]]; then
+                continue
+            fi
+
+            for source in "${remote_sources[@]}"; do
+                url="${base_addresses[$source]}$package/$version/$package.$version.nupkg"
+                if [[ "$source" == "$used_source" ]]; then
+                    hash="$(nix-hash --type sha256 --flat --sri "$version/$package.$version".nupkg)"
+                    found=true
+                    break
+                else
+                    if hash=$(nix-prefetch-url "$url" 2>"$tmp"/error); then
+                        hash="$(nix-hash --to-sri --type sha256 "$hash")"
+                        # If multiple remote sources are enabled, nuget will try them all
+                        # concurrently and use the one that responds first. We always use the
+                        # first source that has the package.
+                        echo "$package $version is available at $url, but was restored from $used_source" 1>&2
+                        found=true
+                        break
+                    else
+                        if ! grep -q 'HTTP error 404' "$tmp/error"; then
+                            cat "$tmp/error" 1>&2
+                            exit 1
+                        fi
+                    fi
+                fi
+            done
+
+            if [[ $found = false ]]; then
+                echo "couldn't find $package $version" >&2
+                exit 1
+            fi
+
+            if [[ $first = false ]]; then
+                echo '  , {'
+            else
+                echo '  {'
+            fi
+            echo "    \"pname\": \"$id\""
+            echo "    , \"version\": \"$version\""
+            echo "    , \"hash\": \"$hash\""
+            if [[ "$source" != https://api.nuget.org/v3/index.json ]]; then
+                echo "    , \"url\": \"$url\""
+            fi
+            echo '  }'
+            first=false
+        done
+        cd ..
+    done
+
+    echo ']'
+) | jq .
diff --git a/pkgs/by-name/nu/nuget-to-json/package.nix b/pkgs/by-name/nu/nuget-to-json/package.nix
new file mode 100644
index 000000000000..6a2be3060576
--- /dev/null
+++ b/pkgs/by-name/nu/nuget-to-json/package.nix
@@ -0,0 +1,37 @@
+{
+  lib,
+  runtimeShell,
+  substituteAll,
+  nix,
+  coreutils,
+  jq,
+  xmlstarlet,
+  curl,
+  gnugrep,
+  gawk,
+  cacert,
+}:
+
+substituteAll {
+  name = "nuget-to-json";
+  dir = "bin";
+
+  src = ./nuget-to-json.sh;
+  isExecutable = true;
+
+  inherit runtimeShell cacert;
+  binPath = lib.makeBinPath [
+    nix
+    coreutils
+    jq
+    xmlstarlet
+    curl
+    gnugrep
+    gawk
+  ];
+
+  meta = {
+    description = "Convert a nuget packages directory to a lockfile for buildDotnetModule";
+    mainProgram = "nuget-to-json";
+  };
+}