Refactor code structure for improved readability and maintainability

Author: wjz304

.github/workflows/get.yml

@@ -0,0 +1,82 @@
+#
+# Copyright (C) 2022 Ing <https://github.com/wjz304>
+#
+# This is free software, licensed under the MIT License.
+# See /LICENSE for more information.
+#
+
+name: Get
+
+on:
+  schedule:
+    - cron: "0 12 * * *" # 每天 12:00 UTC 时间运行一次 （北京时间每天 20:00）
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@main
+
+      - name: Init Env
+        run: |
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          git config --global user.name "github-actions[bot]"
+          sudo timedatectl set-timezone "Asia/Shanghai"
+
+      - name: Get fnOS ISO
+        run: |
+          OLD="$(jq 'if type=="array" then . else [] end' "fnOS.json" 2>/dev/null || echo '[]')"
+          OLD="${OLD:-[]}"
+          NEW="[]"
+          # x86_64
+          FNNAS=("https://www.fnnas.com/download?key=fnos" "https://www.fnnas.com/download-arm")
+          for url in "${FNNAS[@]}"; do
+            DATAS=$(curl -sL "${url}" | grep -oP '{[^{}]*fnos[^,]*[\.iso|\.img\.gz][^}]*thunder[^}]*"}' | sort -u | sed 's/\\\"/"/g' | jq -s .)
+
+            while IFS= read -r data; do
+              BASE=$(echo "${data}" | jq -r '.url')
+              ARCH="$(echo "${BASE}" | awk -F'/' '{print $4}' | sed 's/.*/\L&/' | sed 's/^arm$/aarch64/')"
+              NAME=""
+              VER=""
+              if [ "${ARCH}" == "x86_64" ]; then
+                NAME="fnOS-${ARCH}"
+                VER="$(echo "${data}" | jq -r '.version')"
+              fi
+              if [ "${ARCH}" == "aarch64" ]; then
+                NAME="$(echo "${data}" | jq -r '.name')"
+                VER="$(echo "${BASE}" | awk -F'/' '{print $6}')"
+              fi
+              if [ -z "${NAME}" ] || [ -z "${VER}" ]; then
+                continue
+              fi
+              URL="$(echo "${data}" | jq -r '.thunder' | sed 's/^thunder:\/\///' | base64 -d 2>/dev/null | sed 's/^AA//; s/ZZ$//')"
+              HASH="$(echo "${data}" | jq -r '.hash')"
+              # build compact JSON object (includes name) and add only if not present in OLD
+              JSON=$(jq -n --arg arch "${ARCH}" --arg name "${NAME}" --arg ver "${VER}" --arg url "${URL}" --arg hash "${HASH}" '{arch:$arch,name:$name,version:$ver,url:$url,hash:$hash}' | jq -c .)
+
+              if [ -z "${JSON}" ] || ! printf '%s' "${JSON}" | jq -e . >/dev/null 2>&1; then
+                continue
+              fi
+              if printf '%s' "${OLD}" | jq -e --argjson obj "${JSON}" 'index($obj) | not' >/dev/null 2>&1; then
+                NEW=$(printf '%s' "${NEW}" | jq -c --argjson obj "${JSON}" '. + [$obj]')
+              fi
+            done <<<"$(printf '%s' "${DATAS}" | jq -c '.[]')"
+          done
+
+          ALL=$(printf '%s' "${OLD}" "${NEW}" | jq -s '.[0] + .[1] | sort_by(.arch, .name, ([.version | scan("[0-9]+") | tonumber]), .version)')
+          printf '%s' "${ALL}" | jq -S . >"fnOS.json"
+
+      - name: Check and Push
+        if: success()
+        run: |
+          echo "Git push ..."
+          # git checkout main
+          git pull
+          status=$(git status -s | grep -E "fnOS.json" | awk '{printf " %s", $2}')
+          if [ -n "${status}" ]; then
+            git add ${status}
+            git commit -m "update $(date +%Y-%m-%d" "%H:%M:%S)"
+            git push -f
+          fi

README.md

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+## fnOS
+
+fnOS 下载地址：https://raw.githubusercontent.com/FNOSP/fnOS/refs/heads/main/fnOS.json
+
+获取最新版本的 fnOS 镜像下载地址：
+```shell
+# E.g. 获取 fnOS-x86_64 最新版本的下载地址
+curl -skL "https://raw.githubusercontent.com/FNOSP/fnOS/refs/heads/main/fnOS.json" \
+| jq -r '[.[] | select(.name=="fnOS-x86_64")] | sort_by((.version | split(".") | map(tonumber)), .version) | last | .url'
+```