Antam

Telegram bot for checking gold prices from multiple sources, plus a scheduled weekly channel sender.

❔ How It Works

flowchart LR
    A["/start"] --> B["Send onboarding message"]
    C["/h"] --> D["Scrape harga-emas.org"]
    E["/a"] --> F["Scrape hargaemas.com"]
    G["/p"] --> H["Call Pluang JSON API"]
    D --> I["Build GoldPrice"]
    F --> I
    H --> I
    I --> J["Format Telegram Message"]
    J --> K["Send Reply"]

    L["Wednesday 10:05 SGT Scout"] --> F
    L --> H
    F --> M["Build Buy-only Channel Message"]
    H --> M
    M --> N["Send Channel Alert"]

🤖 Commands

🔎 Price Retrieval by Command

/start

/start does not fetch a price. It sends the onboarding message and explains which command to use for each source.

Current onboarding content: - /a for Antam gold from hargaemas.com - /p for digital gold from pluang.com - /h for digital gold from harga-emas.org - explanation of Beli and Jual

Example output:

Halo, ini adalah bot cek harga emas Antam.

- /a untuk harga emas antam dari hargaemas.com
- /p untuk harga emas digital dari pluang.com
- /h untuk harga emas digital dari harga-emas.org
- /help untuk lihat bantuan ini lagi

Catatan:
- Beli = harga saat kamu membeli emas
- Jual = harga saat kamu menjual kembali emas

/h

/h scrapes https://harga-emas.org/ with http.Get, then parses the HTML with goquery.

Current retrieval flow: 1. Request the page with http.Get("https://harga-emas.org/") 2. Parse the HTML with goquery.NewDocumentFromReader 3. Search table.ComprehensiveTable_table__NjmlD tbody tr 4. Find the row whose first td is exactly Gram (gr) 5. Read the third td with Eq(2) 6. Remove nested span nodes and trim the remaining text 7. Use that single per-gram value for both: - Beli - Jual

Notes: - Telegram response header: Emas Digital - harga-emas.org - This path depends on the current CSS class and the Gram (gr) row label

Example output:

Emas Digital - harga-emas.org
Beli: 2.349.910
Jual: 2.349.910

/a

/a scrapes https://hargaemas.com/ with http.Get, then parses the HTML with goquery.

Current retrieval flow: 1. Request the page with http.Get("https://hargaemas.com/") 2. Parse the HTML with goquery.NewDocumentFromReader 3. Find the first table.table.table-bordered.table-dark 4. Read the second table row at tbody tr index 1 5. Read the first and second td cells 6. In each cell, extract div.price-current 7. Map the site values to bot labels from the user's point of view: - site JUAL -> bot Beli - site BUYBACK -> bot Jual

Example with the live site structure on August 3, 2026: - site JUAL: 2.610.000 -> bot Beli - site BUYBACK: 2.379.000 -> bot Jual

Notes: - Telegram response header: Emas Antam - hargaemas.com - The bot intentionally converts the site wording into user-perspective labels

Example output:

Emas Antam - hargaemas.com
Beli: 2.610.000
Jual: 2.379.000

/p

/p does not scrape HTML. It calls Pluang's JSON API directly.

Current retrieval flow: 1. Create a GET request to https://api-pluang.pluang.com/api/v3/asset/gold/pricing?daysLimit=1 2. Set request headers: - User-Agent - Accept: application/json, text/plain, */* - Referer: https://pluang.com/ 3. Send the request with http.DefaultClient.Do 4. Require HTTP 200 OK 5. Decode the JSON response body 6. Read: - data.current.buy - data.current.sell 7. Format both integer values into Indonesian thousands-separated strings with dots 8. Return them as: - Beli = buy - Jual = sell

Notes: - Telegram response header: Emas Digital - pluang.com - This command is API-backed, not selector-backed

Example output:

Emas Digital - pluang.com
Beli: 2.610.000
Jual: 2.379.000

⏰ Scout Schedule

The Antam scout runs once per week on Wednesday at 10:05 Singapore time.

Current behavior: 1. The scheduler calls getHargaEmasComPrices() 2. The scheduler calls getPluangGoldPrices() 3. The bot builds a buy-only summary from the available results 4. The bot sends the message to TELEGRAM_CHANNEL_ANTAM

Important: - The scheduled scout uses hargaemas.com and pluang.com - The scheduled message includes only Beli - If one source fails, the bot still sends the other source when available - It does not use /start and it does not use /h

Example output:

Emas Antam - hargaemas.com
2.610.000

Emas Digital - pluang.com
2.610.000

🛠️ Setup

Environment Variables

🧷 Notes

• The bot uses Telegram long polling.
• Source-specific parsing is fragile by nature; selector changes on harga-emas.org or hargaemas.com can break /start or /a.
• /p is generally less sensitive to page markup changes because it uses JSON.