// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Commercial
// SPDX-FileCopyrightText: 2025-2026 Christian Galo

package cmd

import (
	"context"
	"database/sql"
	"fmt"
	"log/slog"
	"time"

	"git.coopcloud.tech/wiki-cafe/member-console/internal/db"
	"git.coopcloud.tech/wiki-cafe/member-console/internal/domains"
	"git.coopcloud.tech/wiki-cafe/member-console/internal/integration"
	"git.coopcloud.tech/wiki-cafe/member-console/internal/integrations"
	"git.coopcloud.tech/wiki-cafe/member-console/internal/systemtenant"
)

// ensureBootDataState performs the data-state work `start` does after
// migrations and before serving, and `seed-demo` does before seeding, so a
// database that was reset, migrated, and reseeded (test/reset-app-db.sh,
// the screen-capture utility's first step) holds exactly what a booted
// deployment holds:
//
//   - every installed integration's provider record, after its key is
//     checked against its manifest (integration-registration);
//   - the System tenant (system-tenant);
//   - expired pending domain claims swept (claim-expiry-and-carve-guards
//     D1/D3): core registry work with no integration in it, run BEFORE the
//     reconciliation below because a stranded pending external claim at a
//     configured farm domain is exactly what makes EnsureOperatorRoot fail;
//     logged, not fatal, since an unswept claim holds one name where an
//     unensurable root leaves every hosted name unallocatable;
//   - monthly RANGE partitions for core.webhook_events for the months ahead
//     (webhook-partition-maintenance); logged, not fatal;
//   - each integration's domains reconciliation (design D8): operator roots
//     ensured from deployment configuration and placements backfilled for
//     resources that predate the registry. Unconditional, not an
//     integration's Startup hook, which runs only when Temporal is
//     configured. Fatal: a registry that does not fit the deployment's own
//     namespace configuration is a misconfiguration.
func ensureBootDataState(ctx context.Context, database *sql.DB, logger *slog.Logger, integs []integrations.Integration) error {
	providerSources := make([]integration.ProviderSource, 0, len(integs))
	for _, integ := range integs {
		ps := integ.Provider()
		if err := integration.AssertKeyMatch(integ.Key(), ps.ProviderManifest()); err != nil {
			return fmt.Errorf("integration key mismatch: %w", err)
		}
		providerSources = append(providerSources, ps)
	}
	if err := integration.RegisterProviders(ctx, database, providerSources); err != nil {
		return fmt.Errorf("register providers: %w", err)
	}

	if _, err := systemtenant.Ensure(ctx, database); err != nil {
		return fmt.Errorf("ensure system tenant: %w", err)
	}

	if result, err := domains.NewRegistry(database).SweepExpiredClaims(ctx); err != nil {
		logger.Error("domain claim expiry sweep failed",
			slog.Int("candidates", result.Candidates),
			slog.Int("expired", result.Expired),
			slog.Int("failed", result.Failed),
			slog.Any("error", err))
	} else if result.Candidates > 0 {
		logger.Info("domain claim expiry sweep completed",
			slog.Int("candidates", result.Candidates),
			slog.Int("expired", result.Expired))
	}

	if err := db.EnsureWebhookEventPartitions(ctx, database, time.Now(), db.DefaultWebhookPartitionMonthsAhead); err != nil {
		logger.Warn("webhook_events partition ensure failed", slog.Any("error", err))
	}

	for _, integ := range integs {
		dr, ok := integ.(domainsReconciler)
		if !ok {
			continue
		}
		if err := dr.ReconcileDomains(ctx, database, logger); err != nil {
			return fmt.Errorf("reconcile domains registry for %s: %w", integ.Key(), err)
		}
	}
	return nil
}