大大的小蜗牛

#!/bin/bash

# 已測試版本: 
# Memos: v0.18.2 
# Mastodon: v4.2.8

# ======================================================
# 配置開始

# Memos Host
MEMOS_HOST=""

# Memos Access Token
MEMOS_ACCESS_TOKEN=""

# 發布 Memos 的可見性 ('PUBLIC', 'PROTECTED', 'PRIVATE') 三選一
MEMOS_VISIBILITY=PUBLIC

# Mastodon Instance
MASTODON_INSTANCE=""

# Mastodon ID, Find ID: https://INSTANCE/api/v1/accounts/lookup?acct=USERNAME
MASTODON_ID=""

# 跳過回覆和轉嘟
SKIP_MASTODON_REPLY=true
SKIP_MASTODON_REBLOG=true

# 獲取當前用戶的 Home 目錄路徑及保存 ID 的文件，保持默認，不用更改
HOME_DIR=~
FILE_PATH=$HOME_DIR/.mastodon_memos_id.json

# 配置結束
# ======================================================

# 以下內容不用更改

# 檢查 ID 文件是否存在
if [ ! -f "$FILE_PATH" ]; then
  # 如果文件不存在，則創建文件並寫入 JSON 數據
  echo '
{
  "latest_memos_id": "0",
  "latest_mastodon_id": "0",
  "bind": []
}
' > "$FILE_PATH"
  echo "Data file created: $FILE_PATH"
else
  # 如果文件存在，則跳過並進行後續步驟
  echo "Local data exist, skipping..."
fi

# 拼接 API 和 Token
if [[ "$MEMOS_HOST" != */ ]]; then
  MEMOS_HOST="$MEMOS_HOST/"
fi
MEMOS_API_HOST="${MEMOS_HOST}api/v1/memo"
AUTHORIZATION="Bearer ${MEMOS_ACCESS_TOKEN}"

# Memos 獲取最新的 Memos ID
MEMOS_URL="${MEMOS_API_HOST}?creatorId=101&rowStatus=NORMAL&limit=1"
LATEST_MEMOS_ID=$(curl --connect-timeout 60 -s $MEMOS_URL | jq -r '.[0].id')

# Mastodon 的 API
if [[ "$MASTODON_INSTANCE" != */ ]]; then
  MASTODON_INSTANCE="$MASTODON_INSTANCE/"
fi
CONTENT_URL="${MASTODON_INSTANCE}api/v1/accounts/${MASTODON_ID}/statuses?limit=1&exclude_replies=${SKIP_MASTODON_REPLY}&exclude_reblogs=${SKIP_MASTODON_REBLOG}"

# Mastodon 最新 Status 的 ID
LATEST_MASTODON_ID=$(curl --connect-timeout 60 -s $CONTENT_URL | jq -r '.[0].id')

# 定義 LOCAL_MEMOS_ID 變量
LOCAL_MEMOS_ID=$(cat "$FILE_PATH" | jq -r '.latest_memos_id')
LOCAL_MASTODON_ID=$(cat "$FILE_PATH" | jq -r '.latest_mastodon_id')

# Webhook 觸發時，判斷 Mastodon 最新 ID 是否為暫存 ID，防止重複同步
if [ "$LATEST_MASTODON_ID" == "$LOCAL_MASTODON_ID" ]; then
  echo "Mastodon no updated, skipping..."
  echo "Skipped: $(TZ=UTC-8 date +"%Y-%m-%d"" ""%T")"
  echo "============================="
  exit 0
fi

CONTENT=$(curl --connect-timeout 60 -s $CONTENT_URL | jq -r '.[0]')

MEDIA=$(echo $CONTENT | jq -r '.media_attachments')
# 判斷 Media 的內容
if [ "$MEDIA" != "null" ]; then
  MEDIAS=$(echo $CONTENT | jq -r '.media_attachments[] | select(.type=="image") | .url')
  # 拼接圖片 
  images=""
  for url in $MEDIAS; do 
    images="$images![image]($url)\n"
  done
  TEXT=$(echo "$CONTENT" | jq -r '.content' | lynx -dump -stdin -nonumbers -nolist | tr -d '\n' | sed '/^$/N;s/\n\n/\n/g' | sed 's/^[[:space:]]*//;s/[[:space:]]*$//' | sed -E 's/ {2,}/ /g')
  TEXT="$TEXT\n$images"
else
  # 普通內容
  TEXT=$(echo "$CONTENT" | jq -r '.content' | lynx -dump -stdin -nonumbers -nolist | tr -d '\n' | sed '/^$/N;s/\n\n/\n/g' | sed 's/^[[:space:]]*//;s/[[:space:]]*$//' | sed -E 's/ {2,}/ /g')
fi

# 判斷內容是否為空
if [ -z "$TEXT" ] || [ "$TEXT" == "\\n" ]; then
  echo "Content is empty, skipping..."
  echo "Skipped: $(TZ=UTC-8 date +"%Y-%m-%d"" ""%T")"
  echo "============================="
  exit 0
fi

# 雙引號轉義
TEXT=$(echo "$TEXT" | sed 's/"/\\"/g')

# Webhook 觸發時，判斷 Memos 最新 ID 是否為暫存 ID
# 當 Memos 單方面有更新後，驗證 Mastodon 和 Memos 的 ID 綁定關係（Todo）
#if [ "$LATEST_MEMOS_ID" == "$LOCAL_MEMOS_ID" ]; then
#  echo "Memos no updated, skipping..."
#  echo "Skipped: $(TZ=UTC-8 date +"%Y-%m-%d"" ""%T")"
#  echo "============================="
# exit 0
#fi

# 對比 Matodon 和 Memos 的 Content 內容的 MD5 值（不一定精確）
# 後期嘗試引入 GPT 對比內容
CONTENT_MEMOS=$(curl --connect-timeout 60 -s $MEMOS_URL | jq '.[0].content')
CONTENT_MASTODON=$TEXT

# 獲取最新 Memos 的 MD5
LATEST_MEMOS_MD5=$(echo $CONTENT_MEMOS | tr -d '"' | md5sum | cut -d' ' -f1)
# 獲取最新 Mastodon 的 MD5
LATEST_TEXT_MD5=$(echo $TEXT | tr -d '"' | md5sum | cut -d' ' -f1)

# 通過 MD5 判斷內容是否重複
if [ "$LATEST_TEXT_MD5" == "$LATEST_MEMOS_MD5" ]; then
  echo "Content is duplicate, skipping..."
  echo "Skipped: $(TZ=UTC-8 date +"%Y-%m-%d"" ""%T")"
  echo "============================="
  exit 0
fi

# 替換 NeoDB 的評分 Emoji
TEXT=$(echo "$TEXT" | sed "s/:star_empty:/🌑/g; s/:star_half:/🌗/g; s/:star_solid:/🌕/g")

# 去掉最末尾的空行
TEXT=$(echo "$TEXT" | sed 's/\\n$//')

# 發布 Memos 並獲取返回的 JSON 數據
RESPONSE=$(curl -s -X POST \
  -H "Accept: application/json" \
  -H "Authorization: $AUTHORIZATION" \
  -d "{ \"content\": \"$TEXT\", \"visibility\": \"$MEMOS_VISIBILITY\"}" \
  $MEMOS_API_HOST)

# 從返回的 JSON 數據中提取 Memos 的 id 值
NEW_MEMOS_ID=$(echo "$RESPONSE" | jq -r '.id')

# 更新 JSON 文件中的 latest_memos_id 的值
jq ".latest_memos_id = \"$NEW_MEMOS_ID\"" "$FILE_PATH" > "${FILE_PATH}.tmp" && mv "${FILE_PATH}.tmp" "$FILE_PATH"

# 更新 JSON 文件中的 latest_mastodon_id 的值
jq ".latest_mastodon_id = \"$LATEST_MASTODON_ID\"" "$FILE_PATH" > "${FILE_PATH}.tmp" && mv "${FILE_PATH}.tmp" "$FILE_PATH"

# 更新 Mastodon 和 Memos 的 ID 的綁定關係，並確保 "bind" 中的數組保留唯一鍵，鍵也只有唯一值
jq ".bind += [{\"$LATEST_MASTODON_ID\": \"$NEW_MEMOS_ID\"}] | .bind = (.bind | unique)" "$FILE_PATH" > "${FILE_PATH}.tmp" && mv "${FILE_PATH}.tmp" "$FILE_PATH"

echo "Sync Mastodon to Memos Successful!"
echo "Done: $(TZ=UTC-8 date +"%Y-%m-%d"" ""%T")"
echo "============================="

{
  "latest_memos_id": "",
  "latest_mastodon_id": "",
  "bind": []
}

{
  "latest_memos_id": "6231",
  "latest_mastodon_id": "112061852482921394",
  "bind": [
    {
      "112059053750743781": "6230"
    },
    {
      "112061852482921394": "6231"
    }
  ]
}