#!/bin/bash

manifestCollect()
{
    local app_name="$1"
    local app_dir="$containers_dir$app_name"

    local libreportal_commit
    libreportal_commit=$(git -C "${install_scripts_dir%/scripts/}" rev-parse --short HEAD 2>/dev/null || echo "unknown")

    local compose_file=""
    for candidate in "$app_dir/docker-compose.yml" "$app_dir/compose.yml"; do
        [[ -f "$candidate" ]] && compose_file="$candidate" && break
    done

    local compose_hash="unknown"
    [[ -n "$compose_file" ]] && compose_hash=$(sha256sum "$compose_file" 2>/dev/null | cut -d' ' -f1)

    local images_json="[]"
    if [[ -n "$compose_file" ]]; then
        local images=()
        while IFS= read -r line; do
            local img
            img=$(echo "$line" | sed -E 's/^[[:space:]]*image:[[:space:]]*["'\'']?([^"'\'' ]+)["'\'']?.*/\1/')
            [[ -n "$img" ]] && images+=("\"$img\"")
        done < <(grep -E '^[[:space:]]+image:' "$compose_file" 2>/dev/null)
        if [[ ${#images[@]} -gt 0 ]]; then
            images_json="[$(IFS=,; echo "${images[*]}")]"
        fi
    fi

    local volumes_json="[]"
    if [[ -d "$app_dir" ]]; then
        local vols=()
        while IFS= read -r d; do
            [[ -n "$d" ]] && vols+=("\"$(basename "$d")\"")
        done < <(find "$app_dir" -mindepth 1 -maxdepth 1 -type d 2>/dev/null)
        if [[ ${#vols[@]} -gt 0 ]]; then
            volumes_json="[$(IFS=,; echo "${vols[*]}")]"
        fi
    fi

    local size_bytes
    size_bytes=$(sudo du -sb "$app_dir" 2>/dev/null | awk '{print $1}')
    [[ -z "$size_bytes" ]] && size_bytes=0

    local file_count
    file_count=$(sudo find "$app_dir" -type f 2>/dev/null | wc -l | tr -d ' ')

    local strategy="${CFG_BACKUP_STRATEGY:-auto}"
    declare -f backupResolveStrategy >/dev/null 2>&1 && strategy=$(backupResolveStrategy "$app_name")

    local databases_json="[]"
    if declare -f backupDbDescriptors >/dev/null 2>&1; then
        local dbs=() desc kind container datadir path
        while IFS= read -r desc; do
            [[ -z "$desc" ]] && continue
            IFS=':' read -r kind container datadir path <<< "$desc"
            dbs+=("{\"kind\":\"$kind\",\"container\":\"$container\",\"path\":\"$path\"}")
        done < <(backupDbDescriptors "$app_name")
        [[ ${#dbs[@]} -gt 0 ]] && databases_json="[$(IFS=,; echo "${dbs[*]}")]"
    fi

    cat <<EOF
{
  "version": 2,
  "app": "$app_name",
  "host": "${CFG_INSTALL_NAME:-libreportal}",
  "created_at": "$(date -Iseconds)",
  "libreportal_commit": "$libreportal_commit",
  "engine": "restic",
  "compose_hash": "$compose_hash",
  "images": $images_json,
  "volumes": $volumes_json,
  "size_bytes": $size_bytes,
  "file_count": $file_count,
  "strategy": "$strategy",
  "databases": $databases_json
}
EOF
}