package statequality

import (
	"errors"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"scm.bstein.dev/bstein/ananke/internal/state"
)

// TestStateTestHookOverrideSetters runs one orchestration or CLI step.
// Signature: TestStateTestHookOverrideSetters(t *testing.T).
// Why: drives top-level test-hook override branches so root-mode quality gates
// keep deterministic failure injection coverage above the per-file threshold.
func TestStateTestHookOverrideSetters(t *testing.T) {
	root := t.TempDir()
	intentPath := filepath.Join(root, "intent.json")

	restoreWriteNil := state.TestHookSetWriteIntentOverride(nil)
	if err := state.WriteIntent(intentPath, state.Intent{State: state.IntentNormal}); err != nil {
		t.Fatalf("expected default write intent path after nil override, got %v", err)
	}
	restoreWriteNil()

	restoreReadNil := state.TestHookSetReadIntentOverride(nil)
	readAfterNil, err := state.ReadIntent(intentPath)
	if err != nil || readAfterNil.State != state.IntentNormal {
		t.Fatalf("expected default read intent path after nil override, got %v / %v", readAfterNil, err)
	}
	restoreReadNil()

	readOverrideCalled := false
	restoreRead := state.TestHookSetReadIntentOverride(func(path string) (state.Intent, error) {
		readOverrideCalled = true
		return state.Intent{}, errors.New("forced read override")
	})
	_, err = state.ReadIntent(intentPath)
	if err == nil || !strings.Contains(err.Error(), "forced read override") {
		t.Fatalf("expected forced read override error, got %v", err)
	}
	if !readOverrideCalled {
		t.Fatalf("expected read override to be invoked")
	}
	restoreRead()
	if _, err := state.TestHookReadIntentDefault(intentPath); err != nil {
		t.Fatalf("expected explicit default read helper to succeed, got %v", err)
	}

	writeOverrideCalled := false
	restoreWrite := state.TestHookSetWriteIntentOverride(func(path string, in state.Intent) error {
		writeOverrideCalled = true
		return errors.New("forced write override")
	})
	err = state.WriteIntent(intentPath, state.Intent{State: state.IntentNormal})
	if err == nil || !strings.Contains(err.Error(), "forced write override") {
		t.Fatalf("expected forced write override error, got %v", err)
	}
	if !writeOverrideCalled {
		t.Fatalf("expected write override to be invoked")
	}
	restoreWrite()
	if err := state.TestHookWriteIntentDefault(filepath.Join(root, "intent-default.json"), state.Intent{State: state.IntentNormal}); err != nil {
		t.Fatalf("expected explicit default write helper to succeed, got %v", err)
	}

	payload := []byte("{bad-json")
	replacement := []byte("{}\n")
	quarantinePath := filepath.Join(root, "quarantine-default.json")
	if err := state.TestHookQuarantineCorruptFileDefault(quarantinePath, payload, replacement, 0o640); err != nil {
		t.Fatalf("expected explicit default quarantine helper to succeed, got %v", err)
	}

	restoreQuarantineNil := state.TestHookSetQuarantineCorruptFileOverride(nil)
	restoreQuarantineNil()

	quarantineOverrideCalled := false
	restoreQuarantine := state.TestHookSetQuarantineCorruptFileOverride(func(path string, payload []byte, replacement []byte, mode os.FileMode) error {
		quarantineOverrideCalled = true
		return errors.New("forced quarantine override")
	})
	err = state.TestHookQuarantineCorruptFile(filepath.Join(root, "quarantine-forced.json"), payload, replacement, 0o640)
	if err == nil || !strings.Contains(err.Error(), "forced quarantine override") {
		t.Fatalf("expected forced quarantine override error, got %v", err)
	}
	if !quarantineOverrideCalled {
		t.Fatalf("expected quarantine override to be invoked")
	}
	restoreQuarantine()
	if err := state.TestHookQuarantineCorruptFile(filepath.Join(root, "quarantine-after-restore.json"), payload, replacement, 0o640); err != nil {
		t.Fatalf("expected quarantine helper to use default impl after restore, got %v", err)
	}
}