#!/bin/bash

# Script to select an audio file and convert it using convert-to-video.sh
# Accessibility notes: Uses yad with titles, text labels, and standard GTK keyboard navigation.

AUDIO_DIR="$HOME/Audio"
CONVERTER="/usr/local/bin/convert-to-video.sh"

# Check if Audio directory exists
if [[ ! -d "$AUDIO_DIR" ]]; then
    echo "The directory $AUDIO_DIR does not exist." |
    yad --text-info \
        --title="Error" \
        --show-cursor \
        --button="OK:0" \
        --center
    exit 1
fi

# Find audio files (mp3, ogg, opus, wav, flac) case-insensitive
# -maxdepth 1: Only look in the top level of the directory
# -printf "%f\n": Print only the filename followed by a newline
FILES=$(find "$AUDIO_DIR" -maxdepth 1 -type f \( -iname "*.mp3" -o -iname "*.ogg" -o -iname "*.opus" -o -iname "*.wav" -o -iname "*.flac" \) -printf "%f\n" | sort)

# Check if any files were found
if [[ -z "$FILES" ]]; then
    echo "No audio files available in $AUDIO_DIR." |
    yad --text-info \
        --title="No Audio Files" \
        --show-cursor \
        --button="OK:0" \
        --center \
        --width=300
    exit 0
fi

# Display selection dialog
# --list: Create a list box
# --column="File": Single column with header
# --separator="": Return exact value without extra separators
# --search-column=1: Allows typing to jump to files (accessibility win)
SELECTED_FILE=$(echo "$FILES" | yad --list \
    --title="Select Audio File" \
    --text="Select an audio file to convert:" \
    --column="File" \
    --separator="" \
    --width=600 \
    --height=500 \
    --center \
    --search-column=1)

# Check exit status
# 0 = OK/Enter
# Any other value (1, 252) = Cancel or Close
RET=$?

# If user canceled or selection is empty, exit silently
if [[ $RET -ne 0 ]] || [[ -z "$SELECTED_FILE" ]]; then
    exit 0
fi

# Construct full path
INPUT_FILE="$AUDIO_DIR/$SELECTED_FILE"

# Run the conversion
# We use a subshell to run the command and pipe output to yad
(
    echo "# Converting: $SELECTED_FILE"
    # Run the converter script
    "$CONVERTER" "$INPUT_FILE"
    # Send 100% to yad to close the progress bar (due to --auto-close)
    echo "100"
) | yad --progress \
    --title="Converting" \
    --text="Starting conversion for $SELECTED_FILE... This can take a long time." \
    --pulsate \
    --auto-close \
    --auto-kill \
    --center \
    --width=500 \
    --button="Cancel:1"

# Check if the process completed successfully (yad returns 0 on auto-close/success)
PROGRESS_RET=$?

if [[ $PROGRESS_RET -eq 0 ]]; then
    echo "Transcode complete." |
    yad --text-info \
        --title="Success" \
        --show-cursor \
        --button="OK:0" \
        --center \
        --width=300
fi

exit 0