// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.

package commonthirdparty

import (
	"context"
	"errors"
	"fmt"
	"time"

	"github.com/spf13/cobra"
	"go.gearno.de/kit/pg"
	"go.probo.inc/probo/pkg/coredata"
	"go.probo.inc/probo/pkg/gid"
	"go.probo.inc/probo/pkg/proboctl/cmdutil"
	"go.probo.inc/probo/pkg/slug"
)

func newCmdUpsert(f *cmdutil.Factory) *cobra.Command {
	var (
		flagName                          string
		flagSlug                          string
		flagCategory                      string
		flagWebsiteURL                    string
		flagLegalName                     string
		flagHeadquarterAddress            string
		flagPrivacyPolicyURL              string
		flagServiceLevelAgreementURL      string
		flagServiceSoftwareAgreementURL   string
		flagDataProcessingAgreementURL    string
		flagBusinessAssociateAgreementURL string
		flagSubprocessorsListURL          string
		flagStatusPageURL                 string
		flagTermsOfServiceURL             string
		flagSecurityPageURL               string
		flagTrustPageURL                  string
		flagCertifications                []string
		flagDryRun                        bool
	)

	cmd := &cobra.Command{
		Use:   "upsert",
		Short: "Create or update a common third party in the global catalog",
		Long: "Insert a new common third party or update an existing one keyed by " +
			"slug. Only --name and --category are required; every other field is " +
			"updated only when its flag is passed, so an existing row's other " +
			"columns are preserved.",
		Args: cobra.NoArgs,
	}

	cmd.Flags().StringVar(&flagName, "name", "", "Display name (required)")
	cmd.Flags().StringVar(&flagSlug, "slug", "", "Slug key (default: derived from --name)")
	cmd.Flags().StringVar(&flagCategory, "category", "", "Third party category (required)")
	cmd.Flags().StringVar(&flagWebsiteURL, "website-url", "", "Website URL")
	cmd.Flags().StringVar(&flagLegalName, "legal-name", "", "Legal name")
	cmd.Flags().StringVar(&flagHeadquarterAddress, "headquarter-address", "", "Headquarter address")
	cmd.Flags().StringVar(&flagPrivacyPolicyURL, "privacy-policy-url", "", "Privacy policy URL")
	cmd.Flags().StringVar(&flagServiceLevelAgreementURL, "service-level-agreement-url", "", "Service level agreement URL")
	cmd.Flags().StringVar(&flagServiceSoftwareAgreementURL, "service-software-agreement-url", "", "Service software agreement URL")
	cmd.Flags().StringVar(&flagDataProcessingAgreementURL, "data-processing-agreement-url", "", "Data processing agreement URL")
	cmd.Flags().StringVar(&flagBusinessAssociateAgreementURL, "business-associate-agreement-url", "", "Business associate agreement URL")
	cmd.Flags().StringVar(&flagSubprocessorsListURL, "subprocessors-list-url", "", "Subprocessors list URL")
	cmd.Flags().StringVar(&flagStatusPageURL, "status-page-url", "", "Status page URL")
	cmd.Flags().StringVar(&flagTermsOfServiceURL, "terms-of-service-url", "", "Terms of service URL")
	cmd.Flags().StringVar(&flagSecurityPageURL, "security-page-url", "", "Security page URL")
	cmd.Flags().StringVar(&flagTrustPageURL, "trust-page-url", "", "Trust page URL")
	cmd.Flags().StringSliceVar(&flagCertifications, "certifications", nil, "Certifications (repeatable)")
	cmd.Flags().BoolVar(&flagDryRun, "dry-run", false, "Print the resulting row without writing")

	_ = cmd.MarkFlagRequired("name")
	_ = cmd.MarkFlagRequired("category")

	cmd.RunE = func(cmd *cobra.Command, args []string) error {
		ctx := cmd.Context()

		category := coredata.ThirdPartyCategory(flagCategory)
		if !category.IsValid() {
			return fmt.Errorf("invalid --category value %q", flagCategory)
		}

		partySlug := flagSlug
		if partySlug == "" {
			partySlug = slug.Make(flagName)
		}

		if partySlug == "" {
			return fmt.Errorf("cannot derive a slug from --name %q; pass --slug explicitly", flagName)
		}

		pgClient, err := f.PgClient()
		if err != nil {
			return err
		}

		out := f.IOStreams.Out

		var (
			party    coredata.CommonThirdParty
			inserted bool
		)

		if err := pgClient.WithTx(
			ctx,
			func(ctx context.Context, tx pg.Tx) error {
				now := time.Now()

				existing := coredata.CommonThirdParty{}

				err := existing.LoadBySlug(ctx, tx, partySlug)
				switch {
				case err == nil:
					party = existing
				case errors.Is(err, coredata.ErrResourceNotFound):
					party = coredata.CommonThirdParty{
						ID:             gid.New(gid.NilTenant, coredata.CommonThirdPartyEntityType),
						Slug:           partySlug,
						Certifications: []string{},
						CreatedAt:      now,
					}
				default:
					return fmt.Errorf("cannot load common third party by slug: %w", err)
				}

				party.Name = flagName
				party.Category = category
				party.Slug = partySlug
				party.UpdatedAt = now

				applyFlag(cmd, "website-url", &party.WebsiteURL, flagWebsiteURL)
				applyFlag(cmd, "legal-name", &party.LegalName, flagLegalName)
				applyFlag(cmd, "headquarter-address", &party.HeadquarterAddress, flagHeadquarterAddress)
				applyFlag(cmd, "privacy-policy-url", &party.PrivacyPolicyURL, flagPrivacyPolicyURL)
				applyFlag(cmd, "service-level-agreement-url", &party.ServiceLevelAgreementURL, flagServiceLevelAgreementURL)
				applyFlag(cmd, "service-software-agreement-url", &party.ServiceSoftwareAgreementURL, flagServiceSoftwareAgreementURL)
				applyFlag(cmd, "data-processing-agreement-url", &party.DataProcessingAgreementURL, flagDataProcessingAgreementURL)
				applyFlag(cmd, "business-associate-agreement-url", &party.BusinessAssociateAgreementURL, flagBusinessAssociateAgreementURL)
				applyFlag(cmd, "subprocessors-list-url", &party.SubprocessorsListURL, flagSubprocessorsListURL)
				applyFlag(cmd, "status-page-url", &party.StatusPageURL, flagStatusPageURL)
				applyFlag(cmd, "terms-of-service-url", &party.TermsOfServiceURL, flagTermsOfServiceURL)
				applyFlag(cmd, "security-page-url", &party.SecurityPageURL, flagSecurityPageURL)
				applyFlag(cmd, "trust-page-url", &party.TrustPageURL, flagTrustPageURL)

				if cmd.Flags().Changed("certifications") {
					party.Certifications = flagCertifications
				}

				if flagDryRun {
					return nil
				}

				inserted, err = party.Upsert(ctx, tx)
				if err != nil {
					return fmt.Errorf("cannot upsert common third party: %w", err)
				}

				return nil
			},
		); err != nil {
			return err
		}

		if flagDryRun {
			_, _ = fmt.Fprintf(out, "Would upsert common third party %q (slug %q, category %s).\n", party.Name, party.Slug, party.Category)
			return nil
		}

		action := "Updated"
		if inserted {
			action = "Created"
		}

		_, _ = fmt.Fprintf(out, "%s common third party %s (%q, slug %q).\n", action, party.ID.String(), party.Name, party.Slug)

		return nil
	}

	return cmd
}

// applyFlag overrides target with value when the named flag was passed.
// An empty value clears the column; an unset flag leaves it untouched, so
// an upsert can update one field without blanking the rest of the row.
func applyFlag(cmd *cobra.Command, name string, target **string, value string) {
	if !cmd.Flags().Changed(name) {
		return
	}

	if value == "" {
		*target = nil
		return
	}

	*target = &value
}