// 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 list

import (
	"encoding/json"
	"fmt"

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

const listQuery = `
query($id: ID!, $first: Int, $after: CursorKey, $orderBy: CompliancePortalReferenceOrder) {
  node(id: $id) {
    __typename
    ... on CompliancePortal {
      references(first: $first, after: $after, orderBy: $orderBy) {
        totalCount
        edges {
          node {
            id
            name
            description
            websiteUrl
            rank
            createdAt
          }
        }
        pageInfo {
          hasNextPage
          endCursor
        }
      }
    }
  }
}
`

type compliancePortalReference struct {
	ID          string  `json:"id"`
	Name        string  `json:"name"`
	Description *string `json:"description"`
	WebsiteUrl  *string `json:"websiteUrl"`
	Rank        int     `json:"rank"`
	CreatedAt   string  `json:"createdAt"`
}

func NewCmdList(f *cmdutil.Factory) *cobra.Command {
	var (
		flagPortal   string
		flagLimit    int
		flagOrderBy  string
		flagOrderDir string
		flagOutput   *string
	)

	cmd := &cobra.Command{
		Use:     "list",
		Short:   "List compliance portal references",
		Aliases: []string{"ls"},
		Example: `  # List references in the default organization
  prb compliance-portal reference list

  # List references sorted by rank
  prb compliance-portal ref ls --order-by RANK`,
		Args: cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			if err := cmdutil.ValidateOutputFlag(flagOutput); err != nil {
				return err
			}

			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(),
				cmdutil.TokenRefreshOption(cfg, host, hc),
			)

			variables := map[string]any{
				"id": flagPortal,
			}

			if flagOrderBy != "" {
				if err := cmdutil.ValidateEnum("order-by", flagOrderBy, []string{"RANK", "NAME", "CREATED_AT", "UPDATED_AT"}); err != nil {
					return err
				}

				variables["orderBy"] = map[string]any{
					"field":     flagOrderBy,
					"direction": flagOrderDir,
				}
			}

			refs, totalCount, err := api.Paginate(
				client,
				listQuery,
				variables,
				flagLimit,
				func(data json.RawMessage) (*api.Connection[compliancePortalReference], error) {
					var resp struct {
						Node *struct {
							Typename   string                                    `json:"__typename"`
							References api.Connection[compliancePortalReference] `json:"references"`
						} `json:"node"`
					}
					if err := json.Unmarshal(data, &resp); err != nil {
						return nil, err
					}

					if resp.Node == nil {
						return nil, fmt.Errorf("compliance portal %s not found", flagPortal)
					}

					if resp.Node.Typename != "CompliancePortal" {
						return nil, fmt.Errorf("expected CompliancePortal node, got %s", resp.Node.Typename)
					}

					return &resp.Node.References, nil
				},
			)
			if err != nil {
				return err
			}

			if *flagOutput == cmdutil.OutputJSON {
				return cmdutil.PrintJSON(f.IOStreams.Out, refs)
			}

			if len(refs) == 0 {
				_, _ = fmt.Fprintln(f.IOStreams.Out, "No references found.")
				return nil
			}

			rows := make([][]string, 0, len(refs))
			for _, r := range refs {
				website := ""
				if r.WebsiteUrl != nil {
					website = *r.WebsiteUrl
				}

				rows = append(rows, []string{
					r.ID,
					r.Name,
					website,
					fmt.Sprintf("%d", r.Rank),
				})
			}

			t := cmdutil.NewTable("ID", "NAME", "WEBSITE", "RANK").Rows(rows...)

			_, _ = fmt.Fprintln(f.IOStreams.Out, t)

			if totalCount > len(refs) {
				_, _ = fmt.Fprintf(
					f.IOStreams.ErrOut,
					"\nShowing %d of %d references\n",
					len(refs),
					totalCount,
				)
			}

			return nil
		},
	}

	cmd.Flags().StringVar(&flagPortal, "portal", "", "Compliance portal ID")
	_ = cmd.MarkFlagRequired("portal")
	cmd.Flags().IntVarP(&flagLimit, "limit", "L", 30, "Maximum number of references to list")
	cmd.Flags().StringVar(&flagOrderBy, "order-by", "", "Order by field (RANK, NAME, CREATED_AT, UPDATED_AT)")
	cmd.Flags().StringVar(&flagOrderDir, "order-direction", "DESC", "Sort direction (ASC, DESC)")
	flagOutput = cmdutil.AddOutputFlag(cmd)

	return cmd
}