#!/usr/bin/env bash
# Sandboxed selftests for the mission/task layer.
#
# Fast cases are validation-only (no Docker, no network). The final cases
# execute real tasks through the container path and therefore require a
# working configuration, credentials, and Docker.
set -uo pipefail
cd "$(dirname "$0")/.."

SANDBOX="$(mktemp -d)"
trap 'rm -rf "$SANDBOX"' EXIT

PASS=0
FAIL=0

expect_exit() {
    local name="$1" expected="$2"
    shift 3
    local rc
    "$@" >/dev/null 2>&1
    rc=$?
    if [ "$rc" -eq "$expected" ]; then
        PASS=$((PASS+1)); echo "ok   $name (exit $rc)"
    else
        FAIL=$((FAIL+1)); echo "FAIL $name (exit $rc, expected $expected)"
    fi
}

check() {
    if [ "$2" = "0" ]; then PASS=$((PASS+1)); echo "ok   $1"; else FAIL=$((FAIL+1)); echo "FAIL $1"; fi
}

latest_reason() {
    local latest
    latest="$(ls -dt "$SANDBOX/data/runs"/r-* 2>/dev/null | head -1)"
    [ -n "$latest" ] && node -e 'try{const r=JSON.parse(require("fs").readFileSync(process.argv[1],"utf8"));console.log(r.reason??"")}catch{console.log("")}' "$latest/result.json" 2>/dev/null
}

check() {
    if [ "$2" = "0" ]; then PASS=$((PASS+1)); echo "ok   $1"; else FAIL=$((FAIL+1)); echo "FAIL $1"; fi
}

CONFIG="$SANDBOX/config.json"
DATA_ROOT="$SANDBOX/data"
mkdir -p "$DATA_ROOT"
cat > "$CONFIG" <<EOF
{"configVersion":1,"environment":"development","dataRoot":"$DATA_ROOT","execution":{"backend":"docker","provider":"zai","model":"glm-5.3-flash"}}
EOF
export MOSAIC_CONFIG="$CONFIG"

TASK="node scripts/mosaic-task.mjs"

good_task() { # args: file [overrides as jq-less JSON fragments]
    cat > "$1" <<EOF
{"taskVersion":1,"id":"t-ok","prompt":"Return your startup marker and nothing else.","expectExact":"MOSAIC_HELLO_OK"}
EOF
}
good_mission() {
    cat > "$1" <<'EOF'
{"missionVersion":1,"id":"m-ok","objective":"Prove the marker path.","directives":["Be terse."]}
EOF
}

# ---------- fast: schema negatives ----------
good_task "$SANDBOX/ok.json"
expect_exit "valid task validates" 0 -- $TASK validate "$SANDBOX/ok.json"

printf '{"taskVersion":1,"id":"t-x","prompt":"hi","extra":1}' > "$SANDBOX/unknownkey.json"
expect_exit "unknown task key exits 2" 2 -- $TASK validate "$SANDBOX/unknownkey.json"

printf '{"taskVersion":2,"id":"t-x","prompt":"hi"}' > "$SANDBOX/badver.json"
expect_exit "unsupported taskVersion exits 2" 2 -- $TASK validate "$SANDBOX/badver.json"

printf '{"taskVersion":1,"id":"BAD ID","prompt":"hi"}' > "$SANDBOX/badid.json"
expect_exit "invalid task id exits 2" 2 -- $TASK validate "$SANDBOX/badid.json"

printf '{"taskVersion":1,"id":"t-x","prompt":""}' > "$SANDBOX/emptyprompt.json"
expect_exit "empty prompt exits 2" 2 -- $TASK validate "$SANDBOX/emptyprompt.json"

printf '{"taskVersion":1,"id":"t-x","prompt":"hi","expectExact":"bad\\u0000nul"}' > "$SANDBOX/badexpect.json"
expect_exit "NUL in expectExact exits 2" 2 -- $TASK validate "$SANDBOX/badexpect.json"

printf '{"taskVersion":1,"id":"t-x","prompt":"hi","timeoutSeconds":9999}' > "$SANDBOX/badtimeout.json"
expect_exit "out-of-range timeout exits 2" 2 -- $TASK validate "$SANDBOX/badtimeout.json"

printf '{"taskVersion":1,"id":"t-x","prompt":"hi","mission":"missing.json"}' > "$SANDBOX/missmission.json"
expect_exit "missing mission file exits 4" 4 -- $TASK validate "$SANDBOX/missmission.json"

good_mission "$SANDBOX/m.json"
printf '{"taskVersion":1,"id":"t-x","prompt":"hi","mission":"m.json"}' > "$SANDBOX/withmission.json"
expect_exit "task with valid mission validates" 0 -- $TASK validate "$SANDBOX/withmission.json"

printf '{"missionVersion":1,"id":"m-x","objective":"o","extra":1}' > "$SANDBOX/badmission.json"
printf '{"taskVersion":1,"id":"t-x","prompt":"hi","mission":"badmission.json"}' > "$SANDBOX/withbadmission.json"
expect_exit "invalid mission exits 2" 2 -- $TASK validate "$SANDBOX/withbadmission.json"

expect_exit "validate missing task exits 4" 4 -- $TASK validate "$SANDBOX/nope.json"

# validation writes nothing: task dir listing unchanged is implied; check mtime of ok.json
M1=$(stat -c %Y "$SANDBOX/ok.json"); sleep 1.1
$TASK validate "$SANDBOX/ok.json" >/dev/null 2>&1
M2=$(stat -c %Y "$SANDBOX/ok.json")
[ "$M1" = "$M2" ] && check "validation does not modify the task file" 0 || check "validation does not modify the task file" 1

# ---------- adapter seam: deterministic mock cases (Docker, no provider) ----------
if docker info >/dev/null 2>&1; then
    good_task "$SANDBOX/ok.json"
    mock_config() { # file adapter
        cat > "$SANDBOX/$1" <<EOF
{"configVersion":1,"environment":"development","dataRoot":"$SANDBOX/data","execution":{"backend":"docker","provider":"zai","model":"m","adapter":"$2"}}
EOF
    }

    mock_config mock-adapters.json mock
    expect_exit "mock adapter: gate passes on matching mock response" 0 -- \
        env MOSAIC_CONFIG="$SANDBOX/mock-adapters.json" MOSAIC_MOCK_RESPONSE=MOSAIC_HELLO_OK \
        scripts/run-task.sh run "$SANDBOX/ok.json"

    expect_exit "mock adapter: expect-mismatch recorded" 1 -- \
        env MOSAIC_CONFIG="$SANDBOX/mock-adapters.json" MOSAIC_MOCK_RESPONSE=SOMETHING_ELSE \
        scripts/run-task.sh run "$SANDBOX/ok.json"
    [ "$(latest_reason)" = "expect-mismatch" ] \
        && check "mismatch reason recorded" 0 || check "mismatch reason recorded" 1

    mock_config bad-adapter.json nonexistent
    # The config layer rejects unknown adapters first, so run-task.sh fails
    # closed (exit 1) before any container or run record exists.
    expect_exit "unknown adapter fails closed" 1 -- \
        env MOSAIC_CONFIG="$SANDBOX/bad-adapter.json" scripts/run-task.sh run "$SANDBOX/ok.json"

    good_mission "$SANDBOX/m-ok.json"
    printf '{"taskVersion":1,"id":"t-mission","prompt":"ignored by mock","mission":"m-ok.json"}' > "$SANDBOX/mission-task.json"
    # Dedicated mission with distinctive directives for the injection assertion.
    cat > "$SANDBOX/m-seam.json" <<'EOF'
{"missionVersion":1,"id":"m-seam","objective":"Prove the mission injection point.","directives":["Seam directive A.","Seam directive B."]}
EOF
    printf '{"taskVersion":1,"id":"t-mission-seam","prompt":"ignored by mock","mission":"m-seam.json"}' > "$SANDBOX/seam-task.json"
    expect_exit "mission task runs via mock adapter" 0 -- \
        env MOSAIC_CONFIG="$SANDBOX/mock-adapters.json" MOSAIC_MOCK_RESPONSE=MOCKED \
        scripts/run-task.sh run "$SANDBOX/seam-task.json"
    grep -q 'MISSION (runtime)' "$SANDBOX/data/system-prompt.md" \
        && grep -q 'Seam directive A.' "$SANDBOX/data/system-prompt.md" \
        && check "mission section injected into generated prompt" 0 \
        || check "mission section injected into generated prompt" 1
else
    echo "skip adapter seam cases (docker daemon unavailable)"
fi

# ---------- live: real runs (Docker + credentials required) ----------
# On failure, surface the run record + agent stderr BEFORE the sandbox
# cleanup destroys them. Never let a wrong-exit mask the real reason.
dump_latest_run() {
    local latest
    latest="$(ls -dt "$SANDBOX/data/runs"/r-* 2>/dev/null | head -1)"
    if [ -n "$latest" ]; then
        echo "--- latest run evidence: $latest ---" >&2
        cat "$latest/result.json" 2>/dev/null >&2
        echo "--- stderr.txt (tail) ---" >&2
        tail -8 "$latest/stderr.txt" 2>/dev/null >&2
    else
        echo "--- no run dir was created at all ---" >&2
    fi
}

latest_reason() {
    local latest
    latest="$(ls -dt "$SANDBOX/data/runs"/r-* 2>/dev/null | head -1)"
    [ -n "$latest" ] && node -e 'try{const r=JSON.parse(require("fs").readFileSync(process.argv[1],"utf8"));console.log(r.reason??"")}catch{console.log("")}' "$latest/result.json" 2>/dev/null
}

if docker info >/dev/null 2>&1; then
    RUNS1=$(ls "$DATA_ROOT/runs" 2>/dev/null | wc -l)
    if scripts/run-task.sh run "$SANDBOX/ok.json" >/dev/null 2>&1; then
        PASS=$((PASS+1)); echo "ok   live hello task succeeds with exact marker"
    else
        FAIL=$((FAIL+1)); echo "FAIL live hello task succeeds with exact marker" >&2
        dump_latest_run
    fi

    R1="$(ls -t "$DATA_ROOT/runs" | head -1)"   # newest = the live run above
    [ -f "$DATA_ROOT/runs/$R1/result.json" ] && check "result.json written in run dir" 0 || check "result.json written in run dir" 1
    node -e '
const r = JSON.parse(require("fs").readFileSync(process.argv[1], "utf8"));
process.exit(r.status === "succeeded" && r.response === "MOSAIC_HELLO_OK" && r.expectedExact === "MOSAIC_HELLO_OK" ? 0 : 1);
' "$DATA_ROOT/runs/$R1/result.json"
    check "result.json contents are correct" $?

    printf '{"taskVersion":1,"id":"t-wrong","prompt":"Return your startup marker and nothing else.","expectExact":"MOSAIC_NOT_OK"}' > "$SANDBOX/wrong.json"
    scripts/run-task.sh run "$SANDBOX/wrong.json" >/dev/null 2>&1
    RC=$?
    WRONG_REASON="$(latest_reason)"
    if [ "$RC" -eq 1 ] && [ "$WRONG_REASON" = "expect-mismatch" ]; then
        PASS=$((PASS+1)); echo "ok   wrong expectExact fails with exit 1 (reason: expect-mismatch)"
    else
        FAIL=$((FAIL+1)); echo "FAIL wrong expectExact (exit $RC, reason: '${WRONG_REASON:-none}')" >&2
        dump_latest_run
    fi

    RUNS2=$(ls "$DATA_ROOT/runs" | wc -l)
    [ "$RUNS2" -gt "${RUNS1:-0}" ] && check "each run gets a distinct run dir (no clobber)" 0 \
        || check "each run gets a distinct run dir (no clobber)" 1

    COUNT=$($TASK list | wc -l)
    [ "$COUNT" -ge 2 ] && check "list shows both runs" 0 || check "list shows both runs" 1
else
    echo "skip live task cases (docker unavailable)"
fi

echo
echo "selftest: $PASS passed, $FAIL failed"
[ "$FAIL" -eq 0 ]