[Currency conversion] Responds to e.g. ":10gbp/usd" to convert GBP to USD, can handle decimals, and any currency codes listed in the website below. #espanso #bash #python

currency.yml

  - regex: :(?P<amount>\d+(?:\.\d+)?)(?P<src>\w{3})/(?P<dst>\w{3})
    label: Currency conversion, e.g. ":10gbp/usd"
    replace: "{{output}}"
    vars:
      - name: output
        type: shell
        params:
          cmd: |
            dst_uc=$(echo "{{dst}}" | tr '[:lower:]' '[:upper:]')
            rate=$(curl -s "https://open.er-api.com/v6/latest/{{src}}" | jq -r ".rates.$dst_uc")
            if [ "$rate" = "null" ] || [ -z "$rate" ]; then
              echo "ERR"
            else
              printf "%.2f %s" "$(echo "{{amount}} * $rate" | bc -l)" "$dst_uc"
            fi

currency_py.yml

  - regex: :(?P<amount>\d+(?:\.\d+)?)(?P<src>\w{3})/(?P<dst>\w{3})
    label: Currency conversion, e.g. ":10gbp/usd"  
    replace: "{{output}}"
    vars:
      - name: output
        type: script
        params:
          args:
            - python
            - -c
            - |
              import requests
              try:
                r = requests.get(f"https://open.er-api.com/v6/latest/{{src}}", timeout=3).json()
                rate = r["rates"].get("{{dst}}".upper())
                print("ERR" if rate is None else f"{float('{{amount}}') * rate:.2f} {{dst}}".upper())
              except:
                print("ERR")

Hey, thanks so much for your help. That works great - how can I set it up so the target currency is always NZD so I can just type in :100USD or :10GBP and it will output $167 and $22.55 respectively, no currency unit? I tried ask ChatGPT to do it but for some reason it couldn't, kept getting :ERR or :1ERR for 3 digit numbers...thanks

  - regex: :(?P<amount>\d+(?:\.\d+)?)(?P<src>[A-Z]{3})
    replace: ${{output}}
    vars:
      - name: output
        type: shell
        params:
          cmd: |
            rate=$(curl -s "https://open.er-api.com/v6/latest/{{src}}" | jq -r ".rates.NZD")
            if [ "$rate" = "null" ] || [ -z "$rate" ]; then
              echo "ERR"
            else
              printf "%.2f" "$(echo "{{amount}} * $rate" | bc -l)"
            fi

Thanks. I made a slight modification so it would accept lower case currency does as well:

  - regex: :(?P<amount>\d+(?:\.\d+)?)(?P<src>[a-zA-Z]{3})
    replace: ${{output}}
    vars:
      - name: output
        type: shell
        params:
          cmd: |
            src_upper=$(echo "{{src}}" | tr '[:lower:]' '[:upper:]')
            rate=$(curl -s "https://open.er-api.com/v6/latest/$src_upper" | jq -r ".rates.NZD")
            if [ "$rate" = "null" ] || [ -z "$rate" ]; then
              echo "ERR"
            else
              printf "%.2f" "$(echo "{{amount}} * $rate" | bc -l)"
            fi

👍