#!/bin/bash

# Snap Channel Manager for Wekan
# Manages snap channels for Wekan-related packages

# Source settings
source $SNAP/bin/wekan-read-settings

# Wekan-related snap packages
WEKAN_SNAPS=("wekan" "wekan-gantt-gpl" "wekan-ondra")

# Get current channel for a snap
get_current_channel() {
    local snap_name="$1"
    snap list "$snap_name" 2>/dev/null | awk 'NR==2 {print $4}' || echo "not-installed"
}

# Check if snap is on stable channel
is_stable_channel() {
    local snap_name="$1"
    local channel=$(get_current_channel "$snap_name")
    [ "$channel" = "stable" ]
}

# Switch snap to stable channel
switch_to_stable() {
    local snap_name="$1"
    local current_channel=$(get_current_channel "$snap_name")

    if [ "$current_channel" = "not-installed" ]; then
        echo "Snap $snap_name is not installed"
        return 1
    fi

    if [ "$current_channel" = "stable" ]; then
        echo "Snap $snap_name is already on stable channel"
        return 0
    fi

    echo "Switching $snap_name from $current_channel to stable channel..."
    if snap refresh "$snap_name" --channel=stable; then
        echo "Successfully switched $snap_name to stable channel"
        return 0
    else
        echo "Failed to switch $snap_name to stable channel"
        return 1
    fi
}

# Show status of all Wekan snaps
show_status() {
    echo "=== Wekan Snap Channel Status ==="
    echo ""

    local all_stable=true

    for snap_name in "${WEKAN_SNAPS[@]}"; do
        local channel=$(get_current_channel "$snap_name")
        local status=""

        if [ "$channel" = "not-installed" ]; then
            status="[NOT INSTALLED]"
        elif [ "$channel" = "stable" ]; then
            status="[STABLE]"
        else
            status="[NON-STABLE: $channel]"
            all_stable=false
        fi

        printf "%-20s %s\n" "$snap_name:" "$status"
    done

    echo ""
    if [ "$all_stable" = true ]; then
        echo "All Wekan snaps are on stable channel ✓"
    else
        echo "Some Wekan snaps are not on stable channel ⚠"
    fi
}

# Switch all Wekan snaps to stable
switch_all_to_stable() {
    echo "=== Switching All Wekan Snaps to Stable Channel ==="
    echo ""

    local success_count=0
    local total_count=0

    for snap_name in "${WEKAN_SNAPS[@]}"; do
        if [ "$(get_current_channel "$snap_name")" != "not-installed" ]; then
            total_count=$((total_count + 1))
            if switch_to_stable "$snap_name"; then
                success_count=$((success_count + 1))
            fi
            echo ""
        fi
    done

    echo "=== Summary ==="
    echo "Successfully switched: $success_count/$total_count snaps"

    if [ "$success_count" -eq "$total_count" ]; then
        echo "All Wekan snaps are now on stable channel ✓"
        return 0
    else
        echo "Some snaps failed to switch to stable channel ⚠"
        return 1
    fi
}

# Show help
show_help() {
    echo "Wekan Snap Channel Manager"
    echo ""
    echo "Usage: $0 [command]"
    echo ""
    echo "Commands:"
    echo "  status    - Show current channel status for all Wekan snaps"
    echo "  switch    - Switch all Wekan snaps to stable channel"
    echo "  help      - Show this help"
    echo ""
    echo "Wekan-related snaps: ${WEKAN_SNAPS[*]}"
}

# Main execution
case "${1:-status}" in
    "status")
        show_status
        ;;
    "switch")
        switch_all_to_stable
        ;;
    "help"|"-h"|"--help")
        show_help
        ;;
    *)
        echo "Unknown command: $1"
        show_help
        exit 1
        ;;
esac