#!/usr/bin/env bats
# Seam: LAN DNS (Pi-hole) on dankclaw.
#
# The Pi-hole quadlet is the LAN's authoritative DNS for the flat
# franksdank.cloud / franksdank.casa name scheme. It retired the dnsmasq
# quadlet (2026-08-24; Pi-hole FTL is a dnsmasq fork, so the addn-hosts
# record file carries over unchanged). Every Caddy vhost name must have an
# A record pointing at the host that runs it, records must stay inside the
# LAN, and the quadlet must be boot-persistent.

load helpers

PIHOLE_DIR="$REPO_ROOT/dankclaw/pihole"
QUADLET="$PIHOLE_DIR/quadlet/pihole.container"
ENV_EXAMPLE="$PIHOLE_DIR/env.example"
HOSTS="$PIHOLE_DIR/addn-hosts"

@test "the pihole quadlet container file exists" {
    [ -f "$QUADLET" ]
}

@test "the pihole quadlet is installed for boot" {
    grep -q 'WantedBy=default.target' "$QUADLET"
}

@test "the pihole quadlet publishes port 53 tcp and udp" {
    grep -qE '^PublishPort=0\.0\.0\.0:53:53/tcp$' "$QUADLET"
    grep -qE '^PublishPort=0\.0\.0\.0:53:53/udp$' "$QUADLET"
}

@test "the pihole quadlet publishes the web UI on 8083" {
    grep -qE '^PublishPort=0\.0\.0\.0:8083:80/tcp$' "$QUADLET"
}

@test "the pihole quadlet restarts on failure" {
    grep -q '^Restart=always' "$QUADLET"
}

@test "the pihole quadlet reads its env file" {
    grep -q '^EnvironmentFile=/home/dank/Containers/pihole/env$' "$QUADLET"
}

@test "the pihole quadlet mounts the addn-hosts record file into the FTL hostsdir" {
    # FTL (a dnsmasq fork) does not read /etc/dnsmasq.d/ (the generated
    # dnsmasq.conf has no conf-dir). Its only file-based local-record
    # mechanism is hostsdir=/etc/pihole/hosts (each file parsed as an
    # /etc/hosts file). Mount the record file there, read-only.
    grep -qE '^Volume=/home/dank/Containers/pihole/addn-hosts:/etc/pihole/hosts/addn-hosts:ro$' "$QUADLET"
}

@test "the pihole sysctl drop-in pins the unprivileged port threshold to 53" {
    # Rootless port 53 needs ip_unprivileged_port_start <= 53 at boot. The
    # repo drop-in is the single source of truth; a later-sorted file that
    # reset it to 80 took LAN DNS down after the 2026-08-26 reboot.
    local f="$PIHOLE_DIR/sysctl/99-dnsmasq.conf"
    [ -f "$f" ]
    grep -q '^net.ipv4.ip_unprivileged_port_start=53$' "$f"
}

@test "deploy_pihole installs the sysctl drop-in and applies it at boot-path" {
    grep -q 'dankclaw/pihole/sysctl/99-dnsmasq.conf' "$REPO_ROOT/scripts/deploy-remote.sh"
    grep -q 'sysctl --system' "$REPO_ROOT/scripts/deploy-remote.sh"
}

@test "deploy_pihole neutralizes the sysctl.conf override (processed after sysctl.d)" {
    # systemd-sysctl applies /etc/sysctl.conf LAST, so a stale line there
    # beats every drop-in. The 2026-08-26 port-53 outage had one.
    grep -q '/etc/sysctl.conf' "$REPO_ROOT/scripts/deploy-remote.sh"
}

@test "the pihole env example has placeholder values only" {
    [ -f "$ENV_EXAMPLE" ]
    grep -q '^WEBPASSWORD=changeme$' "$ENV_EXAMPLE"
    grep -q '^ServerIP=192\.168\.0\.143$' "$ENV_EXAMPLE"
    grep -q '^DNS1=1\.1\.1\.1$' "$ENV_EXAMPLE"
}

@test "the retired dnsmasq quadlet files are out of the repo" {
    [ ! -f "$REPO_ROOT/dankclaw/dnsmasq/dnsmasq.container" ]
    [ ! -f "$REPO_ROOT/dankclaw/dnsmasq/dnsmasq.conf" ]
    [ ! -f "$REPO_ROOT/dankclaw/dnsmasq/Containerfile" ]
}

@test "every addn-hosts line is a valid IPv4 address plus hostnames" {
    local bad=0 line
    while IFS= read -r line; do
        [ -z "$line" ] && continue
        case "$line" in \#*) continue ;; esac
        if ! echo "$line" | grep -qE '^([0-9]{1,3}\.){3}[0-9]{1,3}[[:space:]]+[a-z0-9.-]+([[:space:]]+[a-z0-9.-]+)*$'; then
            echo "BAD LINE: $line"
            bad=1
        fi
    done < "$HOSTS"
    [ "$bad" -eq 0 ]
}

@test "every addn-hosts IP is inside the homelab LAN" {
    ! awk '!/^[[:space:]]*#/ && NF {print $1}' "$HOSTS" \
        | grep -vE '^(192\.168\.0\.[0-9]{1,3})$' \
        | grep -q .
}

@test "every addn-hosts name is under franksdank.cloud or franksdank.casa" {
    local bad=0 line ip n
    while IFS= read -r line; do
        [ -z "$line" ] && continue
        case "$line" in \#*) continue ;; esac
        ip="$(echo "$line" | awk '{print $1}')"
        for n in $(echo "$line" | cut -d' ' -f2-); do
            echo "$n" | grep -qE '(^|\.)franksdank\.(cloud|casa)$' \
                || { echo "UNEXPECTED TLD on $ip: $n"; bad=1; }
        done
    done < "$HOSTS"
    [ "$bad" -eq 0 ]
}

# vhost_names <caddyfile> — print site-block names under the flat scheme.
# Handles both single-address blocks ("name {") and multi-address blocks
# ("name1 name2 {"), one name per line.
vhost_names() {
    grep -E '^(http://)?[a-z0-9.-]+\.franksdank\.(cloud|casa)([[:space:]]+[a-z0-9.-]+\.franksdank\.(cloud|casa))*[[:space:]]*\{' "$1" \
        | sed -E 's/^[[:space:]]+//; s/[[:space:]]*\{$//' \
        | tr ' ' '\n' \
        | sed -E 's#^http://##'
}

# record_ip_for <name> — print the IP a name maps to in addn-hosts
record_ip_for() {
    awk -v n="$1" '{ip=$1; for (i=2; i<=NF; i++) if ($i==n) print ip}' "$HOSTS" | head -1
}

# Caddy is consolidated on dankclaw (192.168.0.143): it fronts every service
# on both hosts, so every vhost name resolves to that one IP.

@test "every Caddyfile vhost has an A record on 192.168.0.143" {
    local names n ip
    names="$(vhost_names "$REPO_ROOT/dankclaw/Caddyfile")"
    [ -n "$names" ] || { echo "no .franksdank vhosts found in dankclaw/Caddyfile"; return 1; }
    while IFS= read -r n; do
        [ -z "$n" ] && continue
        ip="$(record_ip_for "$n")"
        [ "$ip" = "192.168.0.143" ] || { echo "$n -> '$ip' (want 192.168.0.143)"; return 1; }
    done <<< "$names"
}

@test "the pihole admin name has an A record on 192.168.0.143" {
    [ "$(record_ip_for pihole.franksdank.cloud)" = "192.168.0.143" ]
}

@test "no addn-hosts records point at the old per-host split (192.168.0.235)" {
    ! awk '!/^[[:space:]]*#/ && NF {print $1}' "$HOSTS" | grep -q '^192\.168\.0\.235$'
}

@test "the retired llms name has no A record" {
    ! grep -qE '\billms\.franksdank\.cloud\b' "$HOSTS"
}

@test "no secret material in the pihole files" {
    local f
    while IFS= read -r f; do
        has_no_leaked_secret "$f"
        has_no_leaked_sudo_pw "$f"
    done < <(find "$PIHOLE_DIR" -type f | sort)
}