forecast.sh

#!/bin/bash

source printer.sh

get_weather_forecast() {
    local location=$1
    local apikey=$2

    # Set OpenWeatherMap API key, write your own API key here
    apikey=$(cat apikeyfile.txt)
    API_KEY=$apikey

    # Call OpenWeatherMap API and retrieve weather forecast data
    forecast_data=$(curl -s "http://api.openweathermap.org/data/2.5/forecast?q=${location}&appid=${API_KEY}")

    # Extract relevant weather information from JSON response using grep and cut
    dates=$(echo "$forecast_data" | grep -o '"dt":[0-9]*' | cut -d ":" -f 2 | tr '\n' '|')
    temperature=$(echo "$forecast_data" | grep -o '"temp":[^,]*' | cut -d ":" -f 2 | tr '\n' '|')
    description=$(echo "$forecast_data" | grep -o '"description":"[^"]*"' | cut -d ":" -f 2 | tr -d '"' | tr '\n' '|')
    humidity=$(echo "$forecast_data" | grep -o '"humidity":[^,]*' | cut -d ":" -f 2 | tr -d '}' | tr '\n' '|')
    wind_speed=$(echo "$forecast_data" | grep -o '"speed":[^,]*' | cut -d ":" -f 2 | tr -d '}' | tr '\n' '|')
    clouds=$(echo "$forecast_data" | grep -o '"all":[^,]*' | cut -d ":" -f 2 | tr -d '}' | tr '\n' '|')

    # Function to convert Unix timestamp to readable date
    if [[ "$OSTYPE" == "darwin"* ]]; then
        convert_unix_to_date() {
            local timestamp=$1
            local formatted_date=$(date -r "$timestamp" +"%Y-%m-%d %H:%M:%S")
            echo "$formatted_date"
        }
    else
        convert_unix_to_date() {
            local formatted_date=$(awk -v ts="$timestamp" 'BEGIN { print strftime("%Y-%m-%d %H:%M:%S", ts) }')
            echo "$formatted_date"
        }
        
    fi
    

    IFS='|' read -r -a dates_arr <<< "$dates"
    IFS='|' read -r -a temperature_arr <<< "$temperature"
    IFS='|' read -r -a description_arr <<< "$description"
    IFS='|' read -r -a humidity_arr <<< "$humidity"
    IFS='|' read -r -a wind_speed_arr <<< "$wind_speed"
    IFS='|' read -r -a clouds_arr <<< "$clouds"

    # Convert temperature from Kelvin to Celsius
    for ((i = 0; i < ${#temperature_arr[@]}; i++)); do
        temperature_arr[i]=$(echo "scale=2; ${temperature_arr[i]} - 273.15" | bc)
    done

    # Convert Unix timestamps to readable date format and associate weather information with each date
    for ((i = 0; i < ${#dates_arr[@]}; i++)); do
        curr_date="${dates_arr[i]}"
        curr_temp="${temperature_arr[i]}"
        curr_description="${description_arr[i]}"
        curr_humidity="${humidity_arr[i]}"
        curr_wind_speed="${wind_speed_arr[i]}"
        curr_clouds="${clouds_arr[i]}"

        if [[ $curr_date =~ ^[0-9]+$ ]]; then
            if [[ $curr_date -gt 9999999999 ]]; then
                curr_date=$(expr $curr_date / 1000)
            fi
            formatted_date=$(convert_unix_to_date "$curr_date")

            print_information "$curr_description" $curr_temp $curr_humidity, $curr_wind_speed $curr_clouds "$formatted_date"

        else
            echo "Invalid timestamp: $curr_date"
        fi
    done
}