#!/usr/bin/env bash
# lib/cloud.sh — cloud storage provider abstraction.
# Resolves SSR_CLOUD_DIR based on SSR_CLOUD_PROVIDER from config.

ssr::cloud::resolve_dir() {
    local provider="${SSR_CLOUD_PROVIDER:-icloud}" custom="${SSR_CLOUD_PATH:-}"

    case "$provider" in
        icloud)
            printf '%s\n' "$HOME/Library/Mobile Documents/com~apple~CloudDocs"
            ;;
        dropbox)
            if [[ -d "$HOME/Library/CloudStorage" ]]; then
                find "$HOME/Library/CloudStorage" -maxdepth 1 -type d -name 'Dropbox*' -print -quit 2>/dev/null \
                    || printf '%s\n' "$HOME/Dropbox"
            else
                printf '%s\n' "$HOME/Dropbox"
            fi
            ;;
        googledrive)
            find "$HOME/Library/CloudStorage" -maxdepth 1 -type d -name 'GoogleDrive-*' -print -quit 2>/dev/null \
                || ssr::die "Google Drive folder not found under ~/Library/CloudStorage"
            ;;
        onedrive)
            find "$HOME/Library/CloudStorage" -maxdepth 1 -type d -name 'OneDrive-*' -print -quit 2>/dev/null \
                || ssr::die "OneDrive folder not found under ~/Library/CloudStorage"
            ;;
        custom)
            [[ -n "$custom" ]] || ssr::die "SSR_CLOUD_PROVIDER=custom requires SSR_CLOUD_PATH"
            printf '%s\n' "$custom"
            ;;
        *)
            ssr::die "Unknown SSR_CLOUD_PROVIDER: $provider (use: icloud|dropbox|googledrive|onedrive|custom)"
            ;;
    esac
}

# Returns the per-host backup directory under the cloud root.
ssr::cloud::backup_dir() {
    local cloud host uuid
    cloud="$(ssr::cloud::resolve_dir)"
    host="$(hostname -s)"
    uuid="$(/usr/sbin/system_profiler SPHardwareDataType 2>/dev/null \
        | awk '/Hardware UUID/ { print $3 }')"
    [[ -n "$uuid" ]] || uuid="no-uuid"
    local subdir="${SSR_BACKUP_SUBDIR:-BACKUP}"
    printf '%s/%s/%s - %s\n' "$cloud" "$subdir" "$host" "$uuid"
}

# Parent directory for Mackup file_system storage: same cloud subfolder as
# per-host backups (SSR_BACKUP_SUBDIR). ~/.mackup.cfg sets path=<this> and
# directory=mackup — Mackup places files under <this>/mackup/ (not SSR-controlled).
ssr::cloud::mackup_dir() {
    local cloud subdir
    cloud="$(ssr::cloud::resolve_dir)"
    subdir="${SSR_BACKUP_SUBDIR:-BACKUP}"
    printf '%s/%s\n' "$cloud" "$subdir"
}

ssr::cloud::ensure_available() {
    local cloud
    cloud="$(ssr::cloud::resolve_dir)"
    [[ -d "$cloud" ]] || ssr::die "Cloud directory not available: $cloud"
    ssr::ok "Cloud provider: ${SSR_CLOUD_PROVIDER:-icloud} → $cloud"
}