From 21e9dad9ce8c730360e01069d530a19a20dd903c Mon Sep 17 00:00:00 2001
From: Victor <victor@blockbank.ai>
Date: Thu, 28 Nov 2024 15:42:22 +0200
Subject: [PATCH] Updated mods updater script to correctly process mod
 dependencies

---
 docker/files/update-mods.sh | 133 +++++++++++++++++++++++++++++++++++-
 1 file changed, 130 insertions(+), 3 deletions(-)

diff --git a/docker/files/update-mods.sh b/docker/files/update-mods.sh
index 1587a841..e9ac6e1b 100755
--- a/docker/files/update-mods.sh
+++ b/docker/files/update-mods.sh
@@ -23,6 +23,128 @@ print_failure()
   echo "$1"
 }
 
+# Checks game version vs version in mod.
+# Returns 0 if major version differs or mod minor version is less than game version, 1 if ok
+check_game_version() {
+  local game_version="$1"
+  local mod_version="$2"
+
+  local game_major mod_major game_minor mod_minor
+  game_major=$(echo "$game_version" | cut -d '.' -f1)
+  game_minor=$(echo "$game_version" | cut -d '.' -f2)
+  mod_major=$(echo "$mod_version" | cut -d '.' -f1)
+  mod_minor=$(echo "$mod_version" | cut -d '.' -f2)
+
+  if [[ "$game_major" -ne "$mod_major" ]]; then
+    echo 0
+    return
+  fi
+
+  if [[ "$mod_minor" -ge "$game_minor" ]]; then
+    echo 1
+  else
+    echo 0
+  fi
+}
+
+# Checks dependency string with provided version.
+# Only checks for operator based string, ignoring everything else
+# Returns 1 if check is ok, 0 if not
+check_dependency_version()
+{
+  local dependency="$1"
+  local mod_version="$2"
+
+  if [[ "$dependency" =~ ^(\?|!|~|\(~\)) ]]; then
+    echo 1
+  fi
+
+  local condition
+  condition=$(echo "$dependency" | grep -oE '(>=|<=|>|<|=) [0-9]+(\.[0-9]+)*')
+
+  if [[ -z "$condition" ]]; then
+    echo 1
+  fi
+
+  local operator required_version
+  operator=$(echo "$condition" | awk '{print $1}')
+  required_version=$(echo "$condition" | awk '{print $2}')
+
+  case "$operator" in
+    ">=")
+      if [[ "$(printf '%s\n%s\n' "$required_version" "$mod_version" | sort -V | head -n1)" == "$required_version" ]]; then
+        echo 1
+      else
+        echo 0
+      fi
+      ;;
+    ">")
+      if [[ "$(printf '%s\n%s\n' "$required_version" "$mod_version" | sort -V | head -n1)" == "$required_version" && "$required_version" != "$FACTORIO_VERSION" ]]; then
+        echo 1
+      else
+        echo 0
+      fi
+      ;;
+    "<=")
+      if [[ "$(printf '%s\n%s\n' "$required_version" "$mod_version" | sort -V | tail -n1)" == "$required_version" ]]; then
+        echo 1
+      else
+        echo 0
+      fi
+      ;;
+    "<")
+      if [[ "$(printf '%s\n%s\n' "$required_version" "$mod_version" | sort -V | tail -n1)" == "$required_version" && "$required_version" != "$FACTORIO_VERSION" ]]; then
+        echo 1
+      else
+        echo 0
+      fi
+      ;;
+    "=")
+      if [[ "$mod_version" == "$required_version" ]]; then
+        echo 1
+      else
+        echo 0
+      fi
+      ;;
+    *)
+      echo 0
+      ;;
+  esac
+}
+
+get_mod_info()
+{
+  local mod_info_json="$1"
+
+  while IFS= read -r mod_release_info; do
+    local mod_version mod_factorio_version
+    mod_version=$(echo "$mod_release_info" | jq -r ".version")
+    mod_factorio_version=$(echo "$mod_release_info" | jq -r ".info_json.factorio_version")
+
+    if [[ $(check_game_version "$mod_factorio_version" "$FACTORIO_VERSION") == 0 ]]; then
+      echo "  Skipping mod version $mod_version because of factorio version mismatch"  >&2
+      continue
+    fi
+
+    # If we found 'dependencies' element, we also check versions there
+    if [[ $(echo "$mod_release_info" | jq -e '.info_json | has("dependencies") and (.dependencies | length > 0)') == true ]]; then
+      while IFS= read -r dependency; do
+
+        # We only check for 'base' dependency
+        if [[ "$dependency" == base* ]] && [[ $(check_dependency_version "$dependency" "$FACTORIO_VERSION") == 0 ]]; then
+          echo "  Skipping mod version $mod_version, unsatisfied base dependency: $dependency" >&2
+          continue 2
+        fi
+
+      done < <(echo "$mod_release_info" | jq -r '.info_json.dependencies[]')
+    fi
+
+    echo "$mod_release_info" | jq -j ".file_name, \";\", .download_url, \";\", .sha1"
+    break
+
+  done < <(echo "$mod_info_json" | jq -c ".releases|sort_by(.released_at)|reverse|.[]")
+}
+
 update_mod()
 {
   MOD_NAME="$1"
@@ -30,7 +152,7 @@ update_mod()
 
   print_step "Checking for update of mod $MOD_NAME for factorio $FACTORIO_VERSION ..."
 
-  MOD_INFO_URL="$MOD_BASE_URL/api/mods/$MOD_NAME_ENCODED"
+  MOD_INFO_URL="$MOD_BASE_URL/api/mods/$MOD_NAME_ENCODED/full"
   MOD_INFO_JSON=$(curl --silent "$MOD_INFO_URL")
 
   if ! echo "$MOD_INFO_JSON" | jq -e .name >/dev/null; then
@@ -38,7 +160,12 @@ update_mod()
     return 0
   fi
 
-  MOD_INFO=$(echo "$MOD_INFO_JSON" | jq -j --arg version "$FACTORIO_VERSION" ".releases|reverse|map(select(.info_json.factorio_version as \$mod_version | \$version | startswith(\$mod_version)))[0]|.file_name, \";\", .download_url, \";\", .sha1")
+  MOD_INFO=$(get_mod_info "$MOD_INFO_JSON")
+
+  if [[ "$MOD_INFO" == "" ]]; then
+    print_failure "  Not compatible with version"
+    return 0
+  fi
 
   MOD_FILENAME=$(echo "$MOD_INFO" | cut -f1 -d";")
   MOD_URL=$(echo "$MOD_INFO" | cut -f2 -d";")
@@ -90,7 +217,7 @@ update_mod()
 if [[ -f $MOD_DIR/mod-list.json ]]; then
   jq -r ".mods|map(select(.enabled))|.[].name" "$MOD_DIR/mod-list.json" | while read -r mod; do
     if [[ $mod != base ]]; then
-      update_mod "$mod"
+      update_mod "$mod" || true
     fi
   done
 fi