#!/bin/bash

echo "=================================================="

echo "參數檢查"

echo "--------------------------------------------------"

# 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

# 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

# 顯示 RUNNER_TOKEN 參數
echo "RUNNER_TOKEN=$RUNNER_TOKEN"

# 顯示 KEEP_COUNT 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 "KEEP_COUNT=$KEEP_COUNT" && ([ -z "$KEEP_COUNT" ] || [ "$KEEP_COUNT" = "null" ]) && exit 1

echo "=================================================="

echo "取得成品資訊"

echo "--------------------------------------------------"

RELEASE_URL="$GITEA_SERVER_URL/api/v1/repos/$GITEA_REPOSITORY/releases"

# 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" "$RELEASE_URL")"
else
    # 取得成品資訊
    RELEASE_JSON="$(curl -s "$RELEASE_URL")"
fi

# 計算成品數量並依照時間排序
RELEASE_JSON=$(echo "$RELEASE_JSON" | jq -e 'sort_by(.created_at) | reverse')
RELEASE_COUNT=$(echo "$RELEASE_JSON" | jq 'length')

# 檢查成品數量是否需要清除
[ $RELEASE_COUNT -le $KEEP_COUNT ] && exit 0

echo "=================================================="

echo "刪除舊版本的成品"

echo "--------------------------------------------------"

RELEASE_TO_DELETE=$(echo "$RELEASE_JSON" | jq -c ".[$KEEP_COUNT:]")

echo "$RELEASE_TO_DELETE" | jq -c '.[]' | while IFS= read -r RELEASE_URL; do
  # 檢查是否有成品連結
  ([ -z "$RELEASE_URL" ] || [ "$RELEASE_URL" == "null" ]) && continue
  
  # 取得成品資訊
  RELEASE_ID=$(echo "$RELEASE_URL" | jq -r '.id')
  RELEASE_TAG=$(echo "$RELEASE_URL" | jq -r '.tag_name')
  RELEASE_NAME=$(echo "$RELEASE_URL" | jq -r '.name')

  # 檢查成品編號是否正確
  ([ -z "$RELEASE_ID" ] || [ "$RELEASE_ID" == "null" ]) && continue

  # 刪除成品
  RELEASE_URL="$GITEA_SERVER_URL/api/v1/repos/$GITEA_REPOSITORY/releases/$RELEASE_ID"

  RELEASE_DELETE_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X DELETE -H "$RELEASE_HEADER" "$RELEASE_URL")

  # 檢查刪除成品是否成功
  if [ "$RELEASE_DELETE_CODE" -eq 204 ]; then
    echo "✅ 成功刪除成品: $RELEASE_TAG ($RELEASE_NAME)"
  else
    echo "❌ 刪除成品失敗: $RELEASE_TAG ($RELEASE_NAME), HTTP 狀態碼: $RELEASE_DELETE_CODE"
  fi
done

echo "=================================================="