// 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: AuditLogEntryOrder, $filter: AuditLogEntryFilter) {
  node(id: $id) {
    __typename
    ... on Organization {
      auditLogEntries(first: $first, after: $after, orderBy: $orderBy, filter: $filter) {
        totalCount
        edges {
          node {
            id
            actorId
            actorType
            action
            resourceType
            resourceId
            createdAt
          }
        }
        pageInfo {
          hasNextPage
          endCursor
        }
      }
    }
  }
}
`

type auditLogEntry struct {
	ID           string `json:"id"`
	ActorID      string `json:"actorId"`
	ActorType    string `json:"actorType"`
	Action       string `json:"action"`
	ResourceType string `json:"resourceType"`
	ResourceID   string `json:"resourceId"`
	CreatedAt    string `json:"createdAt"`
}

func NewCmdList(f *cmdutil.Factory) *cobra.Command {
	var (
		flagOrg          string
		flagLimit        int
		flagOrderBy      string
		flagOrderDir     string
		flagAction       string
		flagActorID      string
		flagResourceType string
		flagResourceID   string
		flagOutput       *string
	)

	cmd := &cobra.Command{
		Use:     "list",
		Short:   "List audit log entries",
		Aliases: []string{"ls"},
		Example: `  prb audit-log list
  prb audit-log list --action core:thirdParty:create
  prb audit-log list --resource-type ThirdParty --limit 50`,
		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),
			)

			if flagOrg == "" {
				flagOrg = hc.Organization
			}

			if flagOrg == "" {
				return fmt.Errorf("organization is required; pass --org or set a default with 'prb auth login'")
			}

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

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

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

			filter := map[string]any{}
			if flagAction != "" {
				filter["action"] = flagAction
			}

			if flagActorID != "" {
				filter["actorId"] = flagActorID
			}

			if flagResourceType != "" {
				filter["resourceType"] = flagResourceType
			}

			if flagResourceID != "" {
				filter["resourceId"] = flagResourceID
			}

			if len(filter) > 0 {
				variables["filter"] = filter
			}

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

					if resp.Node == nil {
						return nil, fmt.Errorf("organization %s not found", flagOrg)
					}

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

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

			if *flagOutput == cmdutil.OutputJSON {
				if entries == nil {
					entries = []auditLogEntry{}
				}

				return cmdutil.PrintJSON(f.IOStreams.Out, entries)
			}

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

			rows := make([][]string, 0, len(entries))
			for _, e := range entries {
				rows = append(rows, []string{
					e.ID,
					e.ActorType,
					e.ActorID,
					e.Action,
					e.ResourceType,
					e.ResourceID,
					cmdutil.FormatTime(e.CreatedAt),
				})
			}

			t := cmdutil.NewTable("ID", "ACTOR TYPE", "ACTOR", "ACTION", "RESOURCE TYPE", "RESOURCE", "CREATED").Rows(rows...)

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

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

			return nil
		},
	}

	cmd.Flags().StringVar(&flagOrg, "org", "", "Organization ID")
	cmd.Flags().IntVarP(&flagLimit, "limit", "L", 30, "Maximum number of entries to list")
	cmd.Flags().StringVar(&flagOrderBy, "order-by", "", "Order by field (CREATED_AT)")
	cmd.Flags().StringVar(&flagOrderDir, "order-direction", "DESC", "Sort direction (ASC, DESC)")
	cmd.Flags().StringVar(&flagAction, "action", "", "Filter by action (e.g. core:thirdParty:create)")
	cmd.Flags().StringVar(&flagActorID, "actor-id", "", "Filter by actor ID")
	cmd.Flags().StringVar(&flagResourceType, "resource-type", "", "Filter by resource type (e.g. ThirdParty)")
	cmd.Flags().StringVar(&flagResourceID, "resource-id", "", "Filter by resource ID")
	flagOutput = cmdutil.AddOutputFlag(cmd)

	return cmd
}