Fetching Weather hourly

To avoid calling the ansiweather script multiple times, you can save its output to a temporary file and then parse it as needed. Here’s the updated script that does this:

#!/bin/bash

# Define the directory and file paths
DIRECTORY="/path/to/directory/$(date +%Y)"
mkdir -p "$DIRECTORY"
FILE="$DIRECTORY/weather-$(date +%Y-%m-%d).md"
TEMP_FILE="${XDG_RUNTIME_DIR:-/tmp}/ansiweather_output"

# Fetch the weather information and save it to a temporary file
ansiweather > "$TEMP_FILE"

# Get the current date in the desired format
CURRENT_DATE=$(date +"# %a, %b %d, %Y")

# Extract sunrise and sunset information from the temporary file
SUNRISE=$(grep 'Sunrise' "$TEMP_FILE")
SUNSET=$(grep 'Sunset' "$TEMP_FILE")

# Remove Sunrise and Sunset from the main weather information
WEATHER_INFO=$(grep -v 'Sunrise\|Sunset' "$TEMP_FILE")

# Check if the file exists
if [ ! -f "$FILE" ]; then
    # File doesn't exist, create it with the current date, sunrise, and sunset information
    echo -e "$CURRENT_DATE\n\n$SUNRISE\n$SUNSET\n" > "$FILE"
fi

# Get the current time
CURRENT_TIME=$(date +"%H:%M")

# Append the current time as a markdown header and the weather information to the file
echo -e "## $CURRENT_TIME\n$WEATHER_INFO\n" >> "$FILE"

# Clean up the temporary file
rm "$TEMP_FILE"

Explanation:

Setup Directories and File Path:
- Create the directory for the current year if it doesn’t already exist.
- Define the file path for the weather log of the current day.
- Define a temporary file path using either $XDG_RUNTIME_DIR or /tmp.
Fetch Weather Information:
- Run ansiweather once and save its output to the temporary file.
Format Date and Extract Sunrise/Sunset:
- Format the current date as a markdown H1 header.
- Extract the lines containing Sunrise and Sunset from the temporary file.
- Remove Sunrise and Sunset lines from the main weather information using grep.
Check File Existence:
- If the file does not exist, create it with the date, sunrise, and sunset information.
Append Current Weather Information:
- Append the current time as a markdown H2 header and the weather information to the file.
Cleanup:
- Remove the temporary file after processing.

This script ensures the weather information is fetched only once and parsed efficiently, while also handling the file creation and logging as per your requirements.

The expression ${XDG_RUNTIME_DIR:-/tmp} is a parameter expansion in Bash that means:

${XDG_RUNTIME_DIR}: This is a shell variable. It refers to the runtime directory for the current user as defined by the XDG Base Directory Specification.
:-: This is a default value operator. It means “use the value of the variable if it’s set and not null; otherwise, use the default value provided after :-.”
/tmp: This is the default value to use if XDG_RUNTIME_DIR is not set or is null.

In summary, ${XDG_RUNTIME_DIR:-/tmp} will evaluate to the value of XDG_RUNTIME_DIR if it is set and non-null. If XDG_RUNTIME_DIR is not set or is null, it will default to /tmp.

This is useful for ensuring that your script can handle cases where XDG_RUNTIME_DIR might not be set, providing a fallback directory for temporary files.

Here’s a breakdown of how it works in different scenarios:

If XDG_RUNTIME_DIR is set to /run/user/1000, then ${XDG_RUNTIME_DIR:-/tmp} will expand to /run/user/1000.
If XDG_RUNTIME_DIR is not set, then ${XDG_RUNTIME_DIR:-/tmp} will expand to /tmp.

This ensures that your script has a valid directory path to use for temporary files regardless of the environment it’s running in.

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