#!/bin/bash

################################################################################
# Mail Queue Inspector
################################################################################
# Purpose: View and analyze mail queue
################################################################################

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
source "$SCRIPT_DIR/lib/common-functions.sh"
source "$SCRIPT_DIR/lib/system-detect.sh"
source "$SCRIPT_DIR/lib/email-functions.sh"

show_banner "Mail Queue Inspector"

# Detect MTA
MTA=$(detect_mta)

if [ "$MTA" = "unknown" ]; then
    print_error "No supported mail server (Exim/Postfix) detected"
    exit 1
fi

print_info "Detected mail server: $MTA"
echo ""

# Show queue summary
if [ "$MTA" = "exim" ]; then
    print_header "Queue Summary"
    exim -bpc | while read count; do
        if [ "$count" -gt 0 ]; then
            print_warning "$count messages in queue"
        else
            print_success "Mail queue is empty"
        fi
    done
    echo ""

    # Show queue details if not empty
    queue_count=$(exim -bpc)
    if [ "$queue_count" -gt 0 ]; then
        print_header "Recent Queue Messages (last 20)"
        exim -bp | head -40
        echo ""

        print_header "Frozen Messages"
        frozen=$(exim -bp | grep frozen | wc -l)
        if [ "$frozen" -gt 0 ]; then
            print_warning "$frozen frozen messages found"
            exim -bp | grep frozen | head -10
        else
            print_success "No frozen messages"
        fi
    fi

elif [ "$MTA" = "postfix" ]; then
    print_header "Queue Summary"
    mailq | tail -1
    echo ""

    print_header "Queue Details"
    mailq | head -50
fi

echo ""
print_info "Use 'exim -Mvl <message_id>' to view message details"
print_info "Use 'exim -Mrm <message_id>' to remove a message"
echo ""