#!/usr/bin/env bash
# test-install-migration.sh — fixture matrix for the v2→v3 (Constitution) upgrade
# migration in install.sh. Runs the installer against throwaway MOSAIC_HOME dirs
# with MOSAIC_SYNC_ONLY=1 (file phase only — no environment-touching post-install)
# and asserts the framework-owned-overwrite + user-preserve + backup semantics.
#
# Mirrors the TS fixture suite in packages/mosaic/src/config/file-adapter.test.ts;
# both installers MUST behave identically.
#
# Usage:  bash test-install-migration.sh
set -uo pipefail

FW="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd)"   # packages/mosaic/framework
INSTALL="$FW/install.sh"
DEFA="$FW/defaults"

pass=0; fail=0
chk() { if eval "$2"; then echo "  ✓ $1"; pass=$((pass + 1)); else echo "  ✗ $1"; fail=$((fail + 1)); fi; }
run() { MOSAIC_HOME="$1" MOSAIC_INSTALL_MODE="$2" MOSAIC_SYNC_ONLY=1 bash "$INSTALL" >/dev/null 2>&1; }

echo "install.sh v2→v3 migration fixture matrix:"

# F1 — fresh install
T1=$(mktemp -d); run "$T1" overwrite
chk "F1 fresh: CONSTITUTION/AGENTS/STANDARDS/TOOLS seeded" \
  "[ -f '$T1/CONSTITUTION.md' ] && [ -f '$T1/AGENTS.md' ] && [ -f '$T1/STANDARDS.md' ] && [ -f '$T1/TOOLS.md' ]"
chk "F1 fresh: AGENTS == shipped default" "cmp -s '$T1/AGENTS.md' '$DEFA/AGENTS.md'"
chk "F1 fresh: framework-version stamped 3" "[ \"\$(cat '$T1/.framework-version' 2>/dev/null)\" = 3 ]"

# F2 — legacy install with a user-edited AGENTS.md (the sanctioned pre-constitution customization)
T2=$(mktemp -d); mkdir -p "$T2/credentials"
printf '# user-edited AGENTS pre-constitution\n' > "$T2/AGENTS.md"
printf '# my persona\n' > "$T2/SOUL.md"
printf 'token\n' > "$T2/credentials/c.json"
echo 2 > "$T2/.framework-version"
run "$T2" keep
chk "F2 legacy-edited: AGENTS overwritten to framework version" "cmp -s '$T2/AGENTS.md' '$DEFA/AGENTS.md'"
chk "F2 legacy-edited: prior AGENTS saved to .pre-constitution.bak" \
  "grep -q 'user-edited AGENTS pre-constitution' '$T2/AGENTS.md.pre-constitution.bak'"
chk "F2 legacy-edited: SOUL.md preserved" "grep -q 'my persona' '$T2/SOUL.md'"
chk "F2 legacy-edited: credentials preserved" "grep -q token '$T2/credentials/c.json'"
chk "F2 legacy-edited: CONSTITUTION.md installed" "[ -f '$T2/CONSTITUTION.md' ]"
run "$T2" keep
chk "F2 idempotent: .pre-constitution.bak preserved across a 2nd upgrade" \
  "grep -q 'user-edited AGENTS pre-constitution' '$T2/AGENTS.md.pre-constitution.bak'"

# F3 — user-tuned STANDARDS.md
T3=$(mktemp -d); printf '# tuned standards\n' > "$T3/STANDARDS.md"; printf '# persona\n' > "$T3/SOUL.md"; echo 2 > "$T3/.framework-version"
run "$T3" keep
chk "F3 tuned-standard: STANDARDS overwritten" "cmp -s '$T3/STANDARDS.md' '$DEFA/STANDARDS.md'"
chk "F3 tuned-standard: tuned copy backed up" "grep -q 'tuned standards' '$T3/STANDARDS.md.pre-constitution.bak'"

# F4 — unattended / no TTY (stdin closed): must complete without hanging, default to keep
T4=$(mktemp -d); printf '# persona\n' > "$T4/SOUL.md"; printf '# old\n' > "$T4/AGENTS.md"; echo 2 > "$T4/.framework-version"
MOSAIC_HOME="$T4" MOSAIC_SYNC_ONLY=1 bash "$INSTALL" </dev/null >/dev/null 2>&1
chk "F4 no-TTY: completed, AGENTS updated" "cmp -s '$T4/AGENTS.md' '$DEFA/AGENTS.md'"

# F5 — failure path must not corrupt existing data (invalid mode rejected before any file op)
T5=$(mktemp -d); mkdir -p "$T5/credentials"; printf '# orig\n' > "$T5/SOUL.md"; printf 'keepme\n' > "$T5/credentials/c.json"; echo 2 > "$T5/.framework-version"
MOSAIC_HOME="$T5" MOSAIC_INSTALL_MODE=bogus MOSAIC_SYNC_ONLY=1 bash "$INSTALL" >/dev/null 2>&1; rc=$?
chk "F5 failure: invalid mode rejected (nonzero exit)" "[ $rc -ne 0 ]"
chk "F5 failure: SOUL + credentials intact" "grep -q orig '$T5/SOUL.md' && grep -q keepme '$T5/credentials/c.json'"

rm -rf "$T1" "$T2" "$T3" "$T4" "$T5"
echo
echo "RESULT: $pass passed, $fail failed"
[ "$fail" -eq 0 ]