package permission

import (
	"context"

	"gateway/internal/svc"
	"gateway/internal/types"

	"github.com/zeromicro/go-zero/core/logx"
)

type GetMePermissionsLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

// NewGetMePermissionsLogic returns the "what can I see" reader.
func NewGetMePermissionsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetMePermissionsLogic {
	return &GetMePermissionsLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

// GetMePermissions returns the role + permission map for the current user.
func (l *GetMePermissionsLogic) GetMePermissions(req *types.MePermissionsQuery) (*types.MePermissionsData, error) {
	if l.svcCtx.PermissionAuthQuery == nil {
		return nil, errb.SysNotImplemented("permission module not configured")
	}
	actor, err := ActorFromContext(l.ctx)
	if err != nil {
		return nil, errb.AuthUnauthorized(err.Error()).WithCause(err)
	}
	resp, err := l.svcCtx.PermissionAuthQuery.Me(l.ctx, actor.TenantID, actor.UID, req.IncludeTree)
	if err != nil {
		return nil, err
	}
	out := &types.MePermissionsData{
		UID:         resp.UID,
		TenantID:    resp.TenantID,
		Roles:       resp.Roles,
		Permissions: make(map[string]string, len(resp.Permissions)),
	}
	for name, status := range resp.Permissions {
		out.Permissions[name] = status.String()
	}
	if req.IncludeTree {
		out.Tree = mapNodes(resp.Tree)
	}
	return out, nil
}