[pixiv] How to write downloaded file information into a single txt file and assign aliases to user IDs?

[1223334444abc]

I would like to save the information of the downloaded files. How can I achieve this?

For example, when running gallery-dl.exe https://www.pixiv.net/users/1234567, I want to write the information of all the downloaded image files into a txt file named with the current date (e.g., Pixiv/ABC/24.11.25.txt) located in the "Pixiv", "{user[name]}" folder.

The format of the information in the file should be:

↲[{date:D%Y-%m-%d}](pid-{id}){title}.{extension}【{caption}】{tags!S}
One file per line, similar to:

↲[2021-1-2](pid-12345677)はぴにゅい.png【コメントとか返信できてないけど全部見てます！ありがたやー??<br />今年もよろしくお願いします！】少年,サンバイザー
↲[2023-10-21](pid-12345678)花束💐.jpg【】VOCALOID,鏡音レン,プロセカ
↲[2024-8-30](pid-92382211)今月色々_p0.jpg【最近すごい肩が痛い、やだね<br /><br />全部fanboxに差分あります<br />(三枚目はPixivボーナスです)<br /><br />pixivFANBOX】R-18,男の子,ボクサーパンツ,ボクサーブリーフ
↲[2024-8-30](pid-92382211)今月色々_p1.jpg【最近すごい肩が痛い、やだね<br /><br />全部fanboxに差分あります<br />(三枚目はPixivボーナスです)<br /><br />pixivFANBOX】R-18,男の子,ボクサーパンツ,ボクサーブリーフ
...

Additionally, since {user[name]} often changes, I have created a mapping table for {user[id]} and folder names. How can I make gallery-dl save files to the corresponding folder under the Pixiv folder based on {user[id]}? I have a txt file similar to this:

123456|ABC
123232|CBA
123333|LLL

Here is my current download configuration, which seems to have some errors and does not achieve the desired result:

        "pixiv":
        {
            "#": "override global archive path for pixiv",
            "archive": "~/gallery-dl/archive-pixiv.sqlite3",

            "#": "set custom directory and filename format strings for all pixiv downloads",
            "proxy": "http://127.0.0.1:1080",
            "filename":
            {
                "type == 'ugoira'": "{id}_p{num}_delay{frames[0]['delay']}ms.{extension}",
                "num > 0"         : "(pid-{id}){title}_p{num}.{extension}",
                ""                : "(pid-{id}){title}.{extension}"
            },
            "directory":
            {
                "type == 'ugoira'": ["Pixiv", "{user[name]}", "OX163", "(pid-{id}){title}"],
                ""                : ["Pixiv", "{user[name]}", "OX163"]
            },
            "refresh-token": "*",
            "cookies": {
                "PHPSESSID": "*"
            },

            "#": "transform ugoira into lossless MKVs",
            "ugoira": true,
            "postprocessors": ["ugoira-copy"],

            "path-restrict": {"\\": "_", "/": "_", ":": ";", "?": "", "*": "", "<": "", ">": "", "|": ""},
            
            "postprocessors": [
            {
                "name": "metadata",
                "event": "post",
                "filename": "{_now:%y.%m.%d}.txt",
                "open": "a",
                "directory": ["Pixiv", "{user[name]}"],
                "refresh-token": "*",

                "format":[
                    "type == 'ugoira'": "[{date:D%Y-%m-%d}](pid-{id}){title}_p{num}_delay{frames[0]['delay']}ms.{extension}【{caption}】{tags!S}",
                    "num > 0"         : "[{date:D%Y-%m-%d}](pid-{id}){title}_p{num}.{extension}【{caption}】{tags!S}",
                    ""                : "[{date:D%Y-%m-%d}](pid-{id}){title}.{extension}【{caption}】{tags!S}"
                ]
            }
    ]
        },