// Copyright (c) 2026 Probo Inc <hello@probo.com>.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

package update

import (
	"encoding/json"
	"fmt"

	"github.com/spf13/cobra"
	"go.probo.inc/probo/pkg/cli/api"
	"go.probo.inc/probo/pkg/cmd/cmdutil"
)

const updateMutation = `
mutation($input: UpdateDocumentInput!) {
  updateDocument(input: $input) {
    document {
      id
      compliancePortalVisibility
    }
    documentVersion {
      id
      title
      major
      minor
      status
      documentType
      classification
    }
  }
}
`

type updateResponse struct {
	UpdateDocument struct {
		Document struct {
			ID                         string `json:"id"`
			CompliancePortalVisibility string `json:"compliancePortalVisibility"`
		} `json:"document"`
		DocumentVersion *struct {
			ID             string `json:"id"`
			Title          string `json:"title"`
			Major          int    `json:"major"`
			Minor          int    `json:"minor"`
			Status         string `json:"status"`
			DocumentType   string `json:"documentType"`
			Classification string `json:"classification"`
		} `json:"documentVersion"`
	} `json:"updateDocument"`
}

func NewCmdUpdate(f *cmdutil.Factory) *cobra.Command {
	var (
		flagTitle                      string
		flagContent                    string
		flagDocumentType               string
		flagClassification             string
		flagCompliancePortalVisibility string
	)

	cmd := &cobra.Command{
		Use:   "update <id>",
		Short: "Update a document",
		Args:  cobra.ExactArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			cfg, err := f.Config()
			if err != nil {
				return err
			}

			host, hc, err := cfg.DefaultHost()
			if err != nil {
				return err
			}

			client := api.NewClient(
				host,
				hc.Token,
				"/api/console/v1/graphql",
				cfg.HTTPTimeoutDuration(),
			)

			input := map[string]any{
				"id": args[0],
			}

			if cmd.Flags().Changed("title") {
				input["title"] = flagTitle
			}

			if cmd.Flags().Changed("content") {
				input["content"] = flagContent
			}

			if cmd.Flags().Changed("document-type") {
				if err := cmdutil.ValidateEnum(
					"document-type",
					flagDocumentType,
					[]string{"OTHER", "GOVERNANCE", "POLICY", "PROCEDURE", "PLAN", "REGISTER", "RECORD", "REPORT", "TEMPLATE", "STATEMENT_OF_APPLICABILITY"},
				); err != nil {
					return err
				}

				input["documentType"] = flagDocumentType
			}

			if cmd.Flags().Changed("classification") {
				if err := cmdutil.ValidateEnum(
					"classification",
					flagClassification,
					[]string{"PUBLIC", "INTERNAL", "CONFIDENTIAL", "SECRET"},
				); err != nil {
					return err
				}

				input["classification"] = flagClassification
			}

			if cmd.Flags().Changed("compliance-portal-visibility") {
				if err := cmdutil.ValidateEnum(
					"compliance-portal-visibility",
					flagCompliancePortalVisibility,
					[]string{"NONE", "PRIVATE", "PUBLIC"},
				); err != nil {
					return err
				}

				input["compliancePortalVisibility"] = flagCompliancePortalVisibility
			}

			if len(input) == 1 {
				return fmt.Errorf("at least one field must be specified for update")
			}

			data, err := client.Do(
				updateMutation,
				map[string]any{"input": input},
			)
			if err != nil {
				return err
			}

			var resp updateResponse
			if err := json.Unmarshal(data, &resp); err != nil {
				return fmt.Errorf("cannot parse response: %w", err)
			}

			doc := resp.UpdateDocument.Document
			if v := resp.UpdateDocument.DocumentVersion; v != nil {
				_, _ = fmt.Fprintf(
					f.IOStreams.Out,
					"Updated document %s (%s v%d.%d)\n",
					doc.ID,
					v.Title,
					v.Major,
					v.Minor,
				)
			} else {
				_, _ = fmt.Fprintf(
					f.IOStreams.Out,
					"Updated document %s\n",
					doc.ID,
				)
			}

			return nil
		},
	}

	cmd.Flags().StringVar(&flagTitle, "title", "", "Document title")
	cmd.Flags().StringVar(&flagContent, "content", "", "Document content")
	cmd.Flags().StringVar(&flagDocumentType, "document-type", "", "Document type: OTHER, GOVERNANCE, POLICY, PROCEDURE, PLAN, REGISTER, RECORD, REPORT, TEMPLATE, STATEMENT_OF_APPLICABILITY")
	cmd.Flags().StringVar(&flagClassification, "classification", "", "Classification: PUBLIC, INTERNAL, CONFIDENTIAL, SECRET")
	cmd.Flags().StringVar(&flagCompliancePortalVisibility, "compliance-portal-visibility", "", "Compliance portal visibility: NONE, PRIVATE, PUBLIC")

	return cmd
}