#!/usr/bin/env bash
# chatd smoke — Phase 4 acceptance gate.
#
# Validates:
#   - chatd boots and reports providers via GET /v1/chat/providers
#   - bare model name routes to local Ollama (default provider)
#   - explicit "ollama/<m>" prefix also routes to local Ollama
#   - :cloud suffix without ollama_cloud key registered → 404
#   - unknown/foo prefix falls through to Ollama default
#   - POST /v1/chat returns provider-stamped response with token counts
#
# Requires: Ollama on :11434 with qwen3.5:latest (or any chat-capable
# model — override via SMOKE_MODEL env). Skips (exit 0) if Ollama is
# absent so this can run on CI boxes without local Ollama.
#
# Usage: ./scripts/chatd_smoke.sh

set -euo pipefail
cd "$(dirname "$0")/.."

export PATH="$PATH:/usr/local/go/bin"

SMOKE_MODEL="${SMOKE_MODEL:-qwen3.5:latest}"

if ! curl -sS --max-time 3 http://localhost:11434/api/tags >/dev/null 2>&1; then
  echo "[chatd-smoke] Ollama not reachable on :11434 — skipping"
  exit 0
fi

if ! curl -sS http://localhost:11434/api/tags | jq -e --arg m "$SMOKE_MODEL" \
    '.models[] | select(.name == $m)' >/dev/null 2>&1; then
  echo "[chatd-smoke] $SMOKE_MODEL not loaded in Ollama — skipping"
  exit 0
fi

echo "[chatd-smoke] building chatd + gateway..."
go build -o bin/ ./cmd/chatd ./cmd/gateway

pkill -f "bin/(chatd|gateway)" 2>/dev/null || true
sleep 0.3

PIDS=()
TMP="$(mktemp -d)"
CFG="$TMP/chatd.toml"

cleanup() {
  echo "[chatd-smoke] cleanup"
  for p in "${PIDS[@]:-}"; do [ -n "${p:-}" ] && kill "$p" 2>/dev/null || true; done
  rm -rf "$TMP"
}
trap cleanup EXIT INT TERM

# Test config: chatd talks only to local Ollama (no cloud keys).
# This proves the bare-name + prefix-routing + :cloud-without-cloud
# behaviors without needing API keys in CI.
cat > "$CFG" <<EOF
[gateway]
bind         = "127.0.0.1:3110"
storaged_url = "http://127.0.0.1:3211"
catalogd_url = "http://127.0.0.1:3212"
ingestd_url  = "http://127.0.0.1:3213"
queryd_url   = "http://127.0.0.1:3214"
vectord_url  = "http://127.0.0.1:3215"
embedd_url   = "http://127.0.0.1:3216"
pathwayd_url = "http://127.0.0.1:3217"
matrixd_url  = "http://127.0.0.1:3218"
observerd_url = "http://127.0.0.1:3219"
chatd_url    = "http://127.0.0.1:3220"

[chatd]
bind       = "127.0.0.1:3220"
ollama_url = "http://localhost:11434"
# Empty *_key_env values disable each provider — only ollama registers.
ollama_cloud_key_env = "_DISABLED_NEVER_SET_OLLAMA_CLOUD"
openrouter_key_env   = "_DISABLED_NEVER_SET_OPENROUTER"
opencode_key_env     = "_DISABLED_NEVER_SET_OPENCODE"
kimi_key_env         = "_DISABLED_NEVER_SET_KIMI"
ollama_cloud_key_file = ""
openrouter_key_file   = ""
opencode_key_file     = ""
kimi_key_file         = ""
timeout_secs = 60
EOF

poll_health() {
  local port="$1" deadline=$(($(date +%s) + 5))
  while [ "$(date +%s)" -lt "$deadline" ]; do
    if curl -sS --max-time 1 "http://127.0.0.1:$port/health" >/dev/null 2>&1; then return 0; fi
    sleep 0.05
  done
  return 1
}

echo "[chatd-smoke] launching chatd → gateway..."
./bin/chatd   -config "$CFG" > /tmp/chatd.log   2>&1 & PIDS+=($!)
poll_health 3220 || { echo "chatd failed"; tail /tmp/chatd.log; exit 1; }
./bin/gateway -config "$CFG" > /tmp/gateway.log 2>&1 & PIDS+=($!)
poll_health 3110 || { echo "gateway failed"; tail /tmp/gateway.log; exit 1; }

# 1. providers listing — only ollama registered when other keys absent
echo "[chatd-smoke] /v1/chat/providers — only ollama registered:"
RESP="$(curl -sS http://127.0.0.1:3110/v1/chat/providers)"
PROVIDERS_COUNT="$(echo "$RESP" | jq -r '.providers | length')"
OLLAMA_AVAIL="$(echo "$RESP" | jq -r '.providers.ollama')"
if [ "$PROVIDERS_COUNT" != "1" ] || [ "$OLLAMA_AVAIL" != "true" ]; then
  echo "  ✗ wanted only ollama=true; got $RESP"
  exit 1
fi
echo "  ✓ exactly 1 provider (ollama, available=true)"

# 2. bare model name → ollama default
echo "[chatd-smoke] POST /v1/chat with bare model name:"
RESP="$(curl -sS -X POST http://127.0.0.1:3110/v1/chat \
  -H 'Content-Type: application/json' \
  -d "{\"model\":\"$SMOKE_MODEL\",\"messages\":[{\"role\":\"user\",\"content\":\"reply with the word ok and nothing else\"}],\"max_tokens\":10}")"
PROV="$(echo "$RESP" | jq -r '.provider')"
CONTENT="$(echo "$RESP" | jq -r '.content')"
LATENCY="$(echo "$RESP" | jq -r '.latency_ms')"
if [ "$PROV" != "ollama" ] || [ -z "$CONTENT" ] || [ "$LATENCY" -lt 0 ] 2>/dev/null; then
  echo "  ✗ expected provider=ollama, non-empty content, positive latency; got $RESP"
  exit 1
fi
echo "  ✓ provider=ollama, latency=${LATENCY}ms, content=$(echo "$CONTENT" | head -c 60 | tr -d '\n')…"

# 3. explicit ollama/ prefix (prefix stripped before upstream call)
echo "[chatd-smoke] POST /v1/chat with explicit ollama/ prefix:"
RESP="$(curl -sS -X POST http://127.0.0.1:3110/v1/chat \
  -H 'Content-Type: application/json' \
  -d "{\"model\":\"ollama/$SMOKE_MODEL\",\"messages\":[{\"role\":\"user\",\"content\":\"reply ok\"}],\"max_tokens\":5}")"
PROV="$(echo "$RESP" | jq -r '.provider')"
MODEL="$(echo "$RESP" | jq -r '.model')"
if [ "$PROV" != "ollama" ] || [ "$MODEL" != "$SMOKE_MODEL" ]; then
  echo "  ✗ expected provider=ollama, model=$SMOKE_MODEL (prefix stripped); got prov=$PROV model=$MODEL"
  exit 1
fi
echo "  ✓ ollama/$SMOKE_MODEL → provider=ollama, model=$SMOKE_MODEL (prefix stripped)"

# 4. :cloud suffix without ollama_cloud registered → 404
echo "[chatd-smoke] POST /v1/chat with :cloud suffix (no cloud provider):"
STATUS="$(curl -sS -o /tmp/cloud404.json -w '%{http_code}' -X POST http://127.0.0.1:3110/v1/chat \
  -H 'Content-Type: application/json' \
  -d '{"model":"kimi-k2.6:cloud","messages":[{"role":"user","content":"hi"}]}')"
if [ "$STATUS" != "404" ]; then
  echo "  ✗ expected 404; got $STATUS body=$(cat /tmp/cloud404.json)"
  exit 1
fi
echo "  ✓ kimi-k2.6:cloud → 404 (ollama_cloud not registered, no silent fall-through to local)"

# 5. unknown prefix falls through to ollama default; upstream 502s
#    because the ollama provider doesn't strip unknown prefixes
#    (it would silently rewrite operator-supplied names). Expected
#    behavior: route to default provider, let upstream reject the
#    literal model name.
echo "[chatd-smoke] POST /v1/chat with unknown/ prefix (falls through, upstream 502s):"
STATUS="$(curl -sS -o /dev/null -w '%{http_code}' -X POST http://127.0.0.1:3110/v1/chat \
  -H 'Content-Type: application/json' \
  -d "{\"model\":\"unknown/$SMOKE_MODEL\",\"messages\":[{\"role\":\"user\",\"content\":\"hi\"}],\"max_tokens\":5}")"
if [ "$STATUS" != "502" ]; then
  echo "  ✗ expected 502 (upstream rejects literal 'unknown/...'); got $STATUS"
  exit 1
fi
echo "  ✓ unknown/<model> → ollama default → upstream 502 (no silent prefix-strip)"

# 6. missing model field → 400
echo "[chatd-smoke] POST /v1/chat with missing model field:"
STATUS="$(curl -sS -o /dev/null -w '%{http_code}' -X POST http://127.0.0.1:3110/v1/chat \
  -H 'Content-Type: application/json' \
  -d '{"messages":[{"role":"user","content":"hi"}]}')"
if [ "$STATUS" != "400" ]; then
  echo "  ✗ expected 400 for missing model; got $STATUS"
  exit 1
fi
echo "  ✓ missing model → 400"

echo "[chatd-smoke] chatd acceptance gate: PASSED (6/6)"