#!/usr/bin/env bash
# G2 smoke — fixtures variant. Same shape as g2_smoke.sh but points
# embedd at the Go fake Ollama (cmd/fake_ollama) instead of a real
# Ollama install. Useful for CI / fresh-clone reviewers who don't
# have Ollama set up.
#
# Validates the embed contract end-to-end:
#   - POST /v1/embed → 200, dim=768
#   - Same text twice → byte-identical vector (fake is deterministic)
#   - Different texts → different vectors
#   - Bad model → 4xx (fake rejects unknown models with 404 → embedd
#     maps to 502)
#
# What this DOESN'T cover:
#   - Real semantic similarity (fake vectors are sha256-derived; not
#     semantically meaningful)
#   - Real Ollama API quirks (timeouts, version-specific shapes)
#
# Closes R-006 partial: embedd no longer needs real Ollama for the
# CI / fresh-clone path. MinIO mocking is a separate Sprint 0
# follow-up.
#
# Usage: ./scripts/g2_smoke_fixtures.sh

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

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

FAKE_PORT=11435  # distinct from real Ollama at 11434
EMBEDD_PORT=3216
GATEWAY_PORT=3110
VECTORD_PORT=3215

echo "[g2-fixtures] building fake_ollama + embedd + vectord + gateway..."
go build -o bin/ ./cmd/fake_ollama ./cmd/embedd ./cmd/vectord ./cmd/gateway

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

PIDS=()
TMP="$(mktemp -d)"
cleanup() {
    echo "[g2-fixtures] cleanup"
    for p in "${PIDS[@]}"; do [ -n "$p" ] && kill "$p" 2>/dev/null || true; done
    rm -rf "$TMP"
}
trap cleanup EXIT INT TERM

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
}

# 1. Start fake_ollama on port 11435
echo "[g2-fixtures] launching fake_ollama on :${FAKE_PORT}..."
./bin/fake_ollama --bind "127.0.0.1:${FAKE_PORT}" --dim 768 \
    > "$TMP/fake_ollama.log" 2>&1 &
PIDS+=($!)
poll_health "$FAKE_PORT" || { echo "fake_ollama failed"; cat "$TMP/fake_ollama.log"; exit 1; }

# 2. Write override config pointing embedd at fake_ollama
CFG="$TMP/lakehouse_fixtures.toml"
sed "s|provider_url *= *\".*\"|provider_url = \"http://127.0.0.1:${FAKE_PORT}\"|" \
    lakehouse.toml > "$CFG"

# 3. Start embedd, vectord, gateway with the override config
echo "[g2-fixtures] launching embedd/vectord/gateway with fixture config..."
for SPEC in "vectord:${VECTORD_PORT}" "embedd:${EMBEDD_PORT}" "gateway:${GATEWAY_PORT}"; do
    NAME="${SPEC%:*}"; PORT="${SPEC#*:}"
    ./bin/"$NAME" --config "$CFG" > "$TMP/${NAME}.log" 2>&1 &
    PIDS+=($!)
    if ! poll_health "$PORT"; then
        echo "[g2-fixtures] $NAME failed to bind on :$PORT"
        tail -10 "$TMP/${NAME}.log"
        exit 1
    fi
done

# 4. Run the assertions
FAILED=0

echo "[g2-fixtures] /v1/embed with one text → 200 + dim=768"
RESP=$(curl -sS -X POST "http://127.0.0.1:${GATEWAY_PORT}/v1/embed" \
    -H 'Content-Type: application/json' \
    -d '{"texts":["hello world"]}')
DIM=$(echo "$RESP" | jq -r '.dimension // empty')
N=$(echo "$RESP" | jq -r '.vectors | length')
MODEL=$(echo "$RESP" | jq -r '.model // empty')
if [ "$DIM" = "768" ] && [ "$N" = "1" ] && [ "$MODEL" = "nomic-embed-text" ]; then
    echo "  ✓ dim=768, model=nomic-embed-text"
else
    echo "  ✗ dim=$DIM n=$N model=$MODEL"; FAILED=1
fi

echo "[g2-fixtures] same text twice → byte-identical vector (deterministic)"
V1=$(curl -sS -X POST "http://127.0.0.1:${GATEWAY_PORT}/v1/embed" \
    -H 'Content-Type: application/json' \
    -d '{"texts":["test"]}' | jq -c '.vectors[0]')
V2=$(curl -sS -X POST "http://127.0.0.1:${GATEWAY_PORT}/v1/embed" \
    -H 'Content-Type: application/json' \
    -d '{"texts":["test"]}' | jq -c '.vectors[0]')
if [ "$V1" = "$V2" ]; then
    echo "  ✓ deterministic"
else
    echo "  ✗ same input → different vectors (fake should be deterministic)"; FAILED=1
fi

echo "[g2-fixtures] different texts → different vectors"
VA=$(curl -sS -X POST "http://127.0.0.1:${GATEWAY_PORT}/v1/embed" \
    -H 'Content-Type: application/json' \
    -d '{"texts":["alpha"]}' | jq -c '.vectors[0]')
VB=$(curl -sS -X POST "http://127.0.0.1:${GATEWAY_PORT}/v1/embed" \
    -H 'Content-Type: application/json' \
    -d '{"texts":["beta"]}' | jq -c '.vectors[0]')
if [ "$VA" != "$VB" ]; then
    echo "  ✓ different texts diverge"
else
    echo "  ✗ different texts produced identical vectors"; FAILED=1
fi

echo "[g2-fixtures] bad model → 4xx/5xx (fake returns 404, embedd maps to 502)"
HTTP=$(curl -s -o /dev/null -w "%{http_code}" \
    -X POST "http://127.0.0.1:${GATEWAY_PORT}/v1/embed" \
    -H 'Content-Type: application/json' \
    -d '{"texts":["x"],"model":"definitely-not-loaded"}')
if [ "$HTTP" -ge 400 ] && [ "$HTTP" -lt 600 ]; then
    echo "  ✓ unknown model → $HTTP"
else
    echo "  ✗ unknown model → $HTTP"; FAILED=1
fi

if [ "$FAILED" = "0" ]; then
    echo "[g2-fixtures] ✓ G2 fixture-mode acceptance: PASSED"
    exit 0
else
    echo "[g2-fixtures] ✗ G2 fixture-mode acceptance: FAILED"
    exit 1
fi