diff --git a/entrypoint.sh b/entrypoint.sh
index 9e71d87..7ee7e92 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,96 +1,109 @@
 #!/bin/bash
 
-echo "=================================================="
+set -euo pipefail
 
-echo "參數檢查"
+readonly LINE="=================================================="
+readonly SUBLINE="--------------------------------------------------"
 
-echo "--------------------------------------------------"
+section() {
+    printf '\n%s\n%s\n%s\n' "$LINE" "$1" "$SUBLINE"
+}
 
-# 顯示 GITEA_SERVER_URL 參數，並檢查是否為空或 "null"，如果是則輸出錯誤訊息並退出
-echo "GITEA_SERVER_URL=$GITEA_SERVER_URL" && ([ -z "$GITEA_SERVER_URL" ] || [ "$GITEA_SERVER_URL" = "null" ]) && exit 1
+info() {
+    printf '[info] %s\n' "$1"
+}
 
-# 顯示 GITEA_REPOSITORY 參數，並檢查是否為空或 "null"，如果是則輸出錯誤訊息並退出
-echo "GITEA_REPOSITORY=$GITEA_REPOSITORY" && ([ -z "$GITEA_REPOSITORY" ] || [ "$GITEA_REPOSITORY" = "null" ]) && exit 1
+fail() {
+    printf '[error] %s\n' "$1" >&2
+    exit 1
+}
 
-# 顯示 RUNNER_TOKEN 參數
-echo "RUNNER_TOKEN=$RUNNER_TOKEN"
+require_env() {
+    local name="$1"
+    local value="$2"
 
-# 顯示 IS_BETA 參數，未設定時預設為 false
-echo "IS_BETA=$IS_BETA" && ([ -z "$IS_BETA" ] || [ "$IS_BETA" = "null" ]) && IS_BETA="false"
+    if [ -z "$value" ] || [ "$value" = "null" ]; then
+        fail "$name 未設定"
+    fi
 
-echo "=================================================="
+    printf '%s=%s\n' "$name" "$value"
+}
 
-echo "取得最新的版本號"
+write_output() {
+    printf 'version=%s\n' "$1" >> "$GITHUB_OUTPUT"
+}
 
-echo "--------------------------------------------------"
+section "參數檢查"
 
-# 組合 RELEASE_URL 參數，並顯示出來
-RELEASE_URL="$GITEA_SERVER_URL/api/v1/repos/$GITEA_REPOSITORY/releases" && echo "RELEASE_URL=$RELEASE_URL"
+require_env "GITEA_SERVER_URL" "${GITEA_SERVER_URL:-}"
+require_env "GITEA_REPOSITORY" "${GITEA_REPOSITORY:-}"
 
-# 檢查是否為空或 "null"
-if [ -n "$RUNNER_TOKEN" ] && [ "$RUNNER_TOKEN" != "null" ]; then
-    # 組合 RELEASE_HEADER 參數，並顯示出來
-    RELEASE_HEADER="Authorization: token $RUNNER_TOKEN" && echo "RELEASE_HEADER=$RELEASE_HEADER"
-
-    # 取得成品資訊
-    RELEASE_JSON="$(curl -s -H "$RELEASE_HEADER" "$RELEASE_URL")"
+if [ -n "${RUNNER_TOKEN:-}" ] && [ "${RUNNER_TOKEN:-}" != "null" ]; then
+    printf 'RUNNER_TOKEN=%s\n' '***'
 else
-    # 取得成品資訊
-    RELEASE_JSON="$(curl -s "$RELEASE_URL")"
+    printf 'RUNNER_TOKEN=%s\n' '未提供'
 fi
 
-# 從成品資訊取得最新的正式版版本號（排除 beta，去除 v 前綴）
-LATEST_VERSION=$(echo "$RELEASE_JSON" | jq -r '[.[] | select(.tag_name | test("-beta\\.") | not)] | if length > 0 then .[0].tag_name else "v0.0.0" end' | sed 's/^v//')
+IS_BETA="${IS_BETA:-false}"
+if [ "$IS_BETA" = "null" ] || [ -z "$IS_BETA" ]; then
+    IS_BETA="false"
+fi
+printf 'IS_BETA=%s\n' "$IS_BETA"
 
-# 並檢查是否為空或 "null" 後
-([ -z "$LATEST_VERSION" ] || [ "$LATEST_VERSION" = "null" ]) && LATEST_VERSION="0.0.0"
+section "取得版本資料"
 
-# 顯示 LATEST_VERSION 參數
-echo "LATEST_VERSION=$LATEST_VERSION"
+RELEASE_URL="$GITEA_SERVER_URL/api/v1/repos/$GITEA_REPOSITORY/releases"
+info "RELEASE_URL=$RELEASE_URL"
 
-echo "=================================================="
+if [ -n "${RUNNER_TOKEN:-}" ] && [ "${RUNNER_TOKEN:-}" != "null" ]; then
+    info "使用授權 token 取得 release"
+    RELEASE_JSON="$(curl -fsS -H "Authorization: token $RUNNER_TOKEN" "$RELEASE_URL")"
+else
+    info "使用匿名請求取得 release"
+    RELEASE_JSON="$(curl -fsS "$RELEASE_URL")"
+fi
 
-echo "計算版本號"
+LATEST_VERSION="$(
+    printf '%s' "$RELEASE_JSON" | jq -r '
+        [ .[] | select(.tag_name | test("-beta\\.") | not) | .tag_name ][0] // "v0.0.0"
+    ' | sed 's/^v//'
+)"
 
-echo "--------------------------------------------------"
+if [ -z "$LATEST_VERSION" ] || [ "$LATEST_VERSION" = "null" ]; then
+    LATEST_VERSION="0.0.0"
+fi
+
+info "LATEST_VERSION=$LATEST_VERSION"
+
+section "計算版本號"
 
-# 分解版本號
 IFS='.' read -r MAJOR MINOR PATCH <<< "$LATEST_VERSION"
+MAJOR="${MAJOR:-0}"
+MINOR="${MINOR:-0}"
+PATCH="${PATCH:-0}"
 
-# 確保變數為數字
-MAJOR=${MAJOR:-0}
-MINOR=${MINOR:-0}
-PATCH=${PATCH:-0}
-
-# 增加 PATCH 版本
 PATCH=$((PATCH + 1))
+if [ "$PATCH" -ge 10 ]; then
+    PATCH=0
+    MINOR=$((MINOR + 1))
+fi
 
-# 如果 PATCH >= 10，重置為 0 並增加 MINOR 版本
-[ $PATCH -ge 10 ] && { PATCH=0; MINOR=$((MINOR + 1)); }
+if [ "$MINOR" -ge 10 ]; then
+    MINOR=0
+    MAJOR=$((MAJOR + 1))
+fi
 
-# 如果 MINOR >= 10，重置為 0 並增加 MAJOR 版本
-[ $MINOR -ge 10 ] && { MINOR=0; MAJOR=$((MAJOR + 1)); }
-
-# 組合新的版本號
 NEW_VERSION="$MAJOR.$MINOR.$PATCH"
 
-# 如果是 beta 版本，計算 beta 編號
 if [ "$IS_BETA" = "true" ]; then
-    # 從所有 release 中找出符合 NEW_VERSION-beta.N 的最大 beta 編號
-    BETA=$(echo "$RELEASE_JSON" | jq -r --arg prefix "v$NEW_VERSION-beta." \
-        '[.[] | select(.tag_name | startswith($prefix)) | .tag_name | ltrimstr($prefix) | tonumber] | if length > 0 then max else 0 end')
-    
+    BETA="$(
+        printf '%s' "$RELEASE_JSON" | jq -r --arg prefix "v$NEW_VERSION-beta." '
+            [ .[] | select(.tag_name | startswith($prefix)) | .tag_name | ltrimstr($prefix) | tonumber ] | if length > 0 then max else 0 end
+        '
+    )"
     BETA=$((BETA + 1))
-
-    NEW_VERSION="$NEW_VERSION-beta.$BETA" && echo "NEW_VERSION=$NEW_VERSION"
-
-    # 將版本輸出到環境變數
-    echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT && exit 0
+    NEW_VERSION="$NEW_VERSION-beta.$BETA"
 fi
 
-echo "NEW_VERSION=$NEW_VERSION"
-
-echo "=================================================="
-
-# 將版本輸出到環境變數
-echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
\ No newline at end of file
+info "NEW_VERSION=$NEW_VERSION"
+write_output "$NEW_VERSION"