#!/usr/bin/env bash
# Fast, sandboxed selftests for the auth checkpoint (M19, corrected in #48).
#
# No Docker, no network, no real credentials. Mosaic-managed accounts live
# under the data root (config-driven, like every other tool); the default
# harness credential appears only as an explicit PI_AUTH_FILE fixture.
# The suite asserts the core safety property: credential MATERIAL from
# fixtures never reaches auth.sh or agent.sh output.
set -uo pipefail
cd "$(dirname "$0")/.."

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

PASS=0
FAIL=0
# Status colors: terminal-only, NO_COLOR-respecting; plain when piped.
if [ -t 1 ] && [ -z "${NO_COLOR:-}" ]; then
    C_OK=$'\033[0;32m'; C_FAIL=$'\033[0;31m'; C_RESET=$'\033[0m'
else
    C_OK=""; C_FAIL=""; C_RESET=""
fi

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

SECRET="SK-TEST-DO-NOT-PRINT-9f2b"
TOKEN="ACCESS-TOKEN-SHOULD-NOT-PRINT"
ENVVAL="ENVVAL-SHOULD-NOT-PRINT"
mkdir -p "$SANDBOX/pi" "$SANDBOX/data/auth" "$SANDBOX/data/state" "$SANDBOX/empty"

# mock system config: data root inside the sandbox (never the real one)
printf '{"configVersion":1,"environment":"development","dataRoot":"%s","execution":{"backend":"docker","provider":"zai","model":"m","adapter":"mock"}}' "$SANDBOX/data" > "$SANDBOX/mock-config.json"
CFG="MOSAIC_CONFIG=$SANDBOX/mock-config.json"

# release pointer so agent.sh's ensure stays on the no-op fast path
REL="$(tr -d '[:space:]' < RELEASE)"
printf '{"pointerVersion":1,"release":"%s","imageTag":"mosaic-poc-agent:0.84.4-r%s","activatedAt":"2026-01-01T00:00:00Z"}\n' "$REL" "$REL" > "$SANDBOX/data/state/active.json"

# fixtures: a default-harness credential and two mosaic-managed accounts
printf '{"anthropic":{"type":"oauth","access":"%s"},"zai":{"type":"api_key","key":"%s"}}' "$TOKEN" "$SECRET" > "$SANDBOX/pi/auth.json"
printf '{}' > "$SANDBOX/data/auth/work.json"
printf '{}' > "$SANDBOX/data/auth/personal.json"
chmod 600 "$SANDBOX/pi/auth.json" "$SANDBOX/data/auth/work.json" "$SANDBOX/data/auth/personal.json"

# status: missing default harness credential -> exit 3, accounts still listed
OUT="$(env PI_AUTH_FILE="$SANDBOX/pi/absent.json" $CFG scripts/auth.sh status 2>"$SANDBOX/err.txt")"; RC=$?
[ "$RC" -eq 3 ] \
    && printf '%s\n' "$OUT" | grep -q '  work  (perms 600)' \
    && check "status with missing harness credential exits 3 and still lists accounts" 0 || check "status with missing harness credential exits 3 and still lists accounts" 1

# status: happy path — harness providers + mosaic accounts, both labeled
OUT="$(env PI_AUTH_FILE="$SANDBOX/pi/auth.json" $CFG scripts/auth.sh status 2>&1)"; RC=$?
[ "$RC" -eq 0 ] \
    && printf '%s\n' "$OUT" | grep -q 'read-only to the stack' \
    && printf '%s\n' "$OUT" | grep -q '  anthropic  type=oauth  source=auth\.json' \
    && printf '%s\n' "$OUT" | grep -q '  zai  type=api_key  source=auth\.json' \
    && printf '%s\n' "$OUT" | grep -q 'mosaic-managed accounts' \
    && check "status reports harness credential (read-only) + mosaic accounts" 0 || check "status reports harness credential (read-only) + mosaic accounts" 1

# the core safety property: fixture secret material never reaches output
printf '%s\n' "$OUT" | grep -q "$SECRET" \
    && check "api key material never reaches output" 1 || check "api key material never reaches output" 0
printf '%s\n' "$OUT" | grep -q "$TOKEN" \
    && check "oauth token material never reaches output" 1 || check "oauth token material never reaches output" 0

# status: unparseable harness file -> exit 2
printf 'not json' > "$SANDBOX/pi/broken.json"
env PI_AUTH_FILE="$SANDBOX/pi/broken.json" $CFG scripts/auth.sh status >/dev/null 2>&1; RC=$?
[ "$RC" -eq 2 ] && check "unparseable credential file exits 2" 0 || check "unparseable credential file exits 2" 1

# status: symlinked harness file -> exit 4
ln -s "$SANDBOX/pi/auth.json" "$SANDBOX/pi/link.json"
env PI_AUTH_FILE="$SANDBOX/pi/link.json" $CFG scripts/auth.sh status >/dev/null 2>&1; RC=$?
[ "$RC" -eq 4 ] && check "symlinked credential file exits 4" 0 || check "symlinked credential file exits 4" 1

# status: env-side names informational — name shown, value never
OUT="$(env FAKE_TEST_API_KEY=$ENVVAL PI_AUTH_FILE="$SANDBOX/pi/auth.json" $CFG scripts/auth.sh status 2>&1)"
printf '%s\n' "$OUT" | grep -q "FAKE_TEST_API_KEY" \
    && check "env-side credential names reported" 0 || check "env-side credential names reported" 1
printf '%s\n' "$OUT" | grep -q "$ENVVAL" \
    && check "env var values never reach output" 1 || check "env var values never reach output" 0

# accounts: mosaic-managed, under the data root — a data root with no accounts dir is the default state: (none), exit 0, creates nothing
printf '{"configVersion":1,"environment":"development","dataRoot":"%s","execution":{"backend":"docker","provider":"zai","model":"m","adapter":"mock"}}' "$SANDBOX/empty" > "$SANDBOX/mock-config-empty.json"
OUT="$(env PI_AUTH_FILE="$SANDBOX/pi/auth.json" MOSAIC_CONFIG="$SANDBOX/mock-config-empty.json" scripts/auth.sh accounts 2>&1)"; RC=$?
[ "$RC" -eq 0 ] && printf '%s\n' "$OUT" | grep -q '(none)' && [ ! -d "$SANDBOX/empty/auth" ] \
    && check "accounts without an accounts dir reports none and creates nothing" 0 || check "accounts without an accounts dir reports none and creates nothing" 1

# accounts: listing with active marker
OUT="$(env PI_AUTH_FILE="$SANDBOX/data/auth/work.json" $CFG scripts/auth.sh accounts 2>&1)"; RC=$?
printf '%s\n' "$OUT" | grep -q '^  work  (perms 600)  <- active (PI_AUTH_FILE)$' \
    && printf '%s\n' "$OUT" | grep -q '^  personal  (perms 600)$' \
    && check "accounts lists files and marks the active one" 0 || check "accounts lists files and marks the active one" 1

# accounts: loose perms flagged loudly
printf '{}' > "$SANDBOX/data/auth/loose.json"
chmod 644 "$SANDBOX/data/auth/loose.json"
OUT="$(env $CFG scripts/auth.sh accounts 2>&1)"
printf '%s\n' "$OUT" | grep -q 'loose  (perms 644)  \[not 0600 — agent --auth will refuse\]' \
    && check "loose account perms flagged in listing" 0 || check "loose account perms flagged in listing" 1

# agent.sh --auth: missing mosaic-managed account file refuses (pre-container)
env $CFG scripts/agent.sh researcher --auth nope </dev/null >/dev/null 2>"$SANDBOX/err.txt"; RC=$?
[ "$RC" -eq 4 ] && grep -q "no mosaic-managed credential file for auth account 'nope'" "$SANDBOX/err.txt" \
    && check "agent --auth with missing account file refuses (exit 4)" 0 || check "agent --auth with missing account file refuses (exit 4)" 1

# agent.sh --auth: loose perms refuse (0600 required, mirroring gitea-api.sh)
env $CFG scripts/agent.sh researcher --auth loose </dev/null >/dev/null 2>"$SANDBOX/err.txt"; RC=$?
[ "$RC" -eq 4 ] && grep -q "must be 0600 (got 644)" "$SANDBOX/err.txt" \
    && check "agent --auth with non-0600 account file refuses" 0 || check "agent --auth with non-0600 account file refuses" 1

# agent.sh --auth: invalid account name refuses
env $CFG scripts/agent.sh researcher --auth "bad~name" </dev/null >/dev/null 2>"$SANDBOX/err.txt"; RC=$?
[ "$RC" -eq 4 ] && grep -q "invalid auth account name" "$SANDBOX/err.txt" \
    && check "agent --auth with invalid account name refuses" 0 || check "agent --auth with invalid account name refuses" 1

# auth.sh: invalid config refuses (fail closed, like every tool)
MOSAIC_CONFIG="$SANDBOX/no-such-config.json" scripts/auth.sh status >/dev/null 2>&1; RC=$?
[ "$RC" -ne 0 ] && check "auth.sh without valid config refuses" 0 || check "auth.sh without valid config refuses" 1

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