#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

# === CONFIGURATION ===

# === Utilitaires ===
esc() { printf '%s' "$1" | sed 's/"/""/g'; }
export -f esc

safe_weekday() {
    local iso="$1"
    python3 - <<PY
import sys
from datetime import datetime
s = "$iso"
try:
    dt = datetime.fromisoformat(s)
    print(dt.strftime('%A'))
except Exception:
    print("Unknown")
PY
}
export -f safe_weekday

get_creation_time() {
    local f="$1"
    local ct=""
    for tag in CreateDate MediaCreateDate TrackCreateDate; do
        ct=$(exiftool -"$tag" -d "%Y-%m-%dT%H:%M:%S" -s3 "$f" 2>/dev/null || true)
        [ -n "$ct" ] && break
    done
    if [ -z "$ct" ]; then
        ct="$(date -r "$f" +"%Y-%m-%dT%H:%M:%S")"
    fi
    echo "$ct"
}
export -f get_creation_time

get_duration() {
    local f="$1"
    ffprobe -v error -show_entries format=duration \
        -of default=noprint_wrappers=1:nokey=1 "$f" 2>/dev/null || echo ""
}
export -f get_duration

get_gps() {
    local f="$1"
    local lat lon
    lat="$(exiftool -GPSLatitude -n -s3 "$f" 2>/dev/null || true)"
    lon="$(exiftool -GPSLongitude -n -s3 "$f" 2>/dev/null || true)"
    echo "$lat|$lon"
}
export -f get_gps

reverse_geocode() {
    local lat="$1" lon="$2"
    local json="" postal city district

    if [ -n "$lat" ] && [ -n "$lon" ]; then
        json="$(curl -s "https://nominatim.openstreetmap.org/reverse?format=json&lat=${lat}&lon=${lon}&zoom=16&addressdetails=1")"

        # Extraction sécurisée avec jq
        postal=$(echo "$json" | jq -r '.address.postcode // ""')
        city=$(echo "$json" | jq -r '.address.city // .address.town // .address.village // ""')
        district=$(echo "$json" | jq -r '.address.neighbourhood // .address.suburb // .address.residential // .address.village // .address.municipality // ""')

        # Concaténation formatée, ignorer champs vides
        formatted=""
        [ -n "$postal" ] && formatted="$formatted$postal"
        [ -n "$city" ] && formatted="${formatted:+$formatted, }
        $city"
        [ -n "$district" ] && formatted="${formatted:+$formatted, }
        $district"

        echo "$formatted" | tr '\n' ' ' | tr -s ' ' ' ' | sed 's/ *$//'
    else
        echo ""
    fi
}
export -f reverse_geocode

process_video() {
    local f="$1"

    local ct weekday duration lat lon address
    ct="$(get_creation_time "$f")"
    weekday="$(safe_weekday "$ct")"
    duration="$(get_duration "$f")"
    IFS="|" read -r lat lon <<<"$(get_gps "$f")"
    address="$(reverse_geocode "$lat" "$lon")"

    echo "$ct|$weekday|$duration|$lat|$lon|$address"
    # --- CSV row ---
    # echo "\"$(basename "$f")\",\"$(esc "$f")\",\"$(esc "$ct")\",\"$(esc "$weekday")\",\"$(esc "$duration")\",\"$(esc "$lat")\",\"$(esc "$lon")\",\"$(esc "$formatted")\""
}
export -f process_video