package emapi

import (
	"context"
	"fmt"
	"net/http"

	"go.infratographer.com/x/gidx"

	"go.equinixmetal.net/infra9-metal-bridge/internal/metal/models"
)

const (
	organizationsPath = "/organizations"
)

// Organizations contains a list of organizations.
type Organizations []*Organization

// ToDetails converts to a generic model organization details.
func (o Organizations) ToDetails() []*models.OrganizationDetails {
	orgs := make([]*models.OrganizationDetails, len(o))

	var nextIndex int

	for _, org := range o {
		orgs[nextIndex] = org.ToDetails()

		if orgs[nextIndex] != nil {
			nextIndex++
		}
	}

	if nextIndex < len(o) {
		return orgs[:nextIndex]
	}

	return orgs
}

// Organization contains organization information.
type Organization struct {
	client *Client

	HREF        string      `json:"href"`
	ID          string      `json:"id"`
	Name        string      `json:"name"`
	Description string      `json:"description"`
	Memberships Memberships `json:"memberships"`
	Projects    Projects    `json:"projects"`
}

// ToDetails converts the object to a generic orgnization details.
func (o *Organization) ToDetails() *models.OrganizationDetails {
	var id string

	if o != nil {
		id = idOrLinkID(o.ID, o.HREF)
	}

	if id == "" {
		return nil
	}

	details := &models.OrganizationDetails{
		ID:       id,
		Name:     o.Name,
		Projects: o.Projects.ToDetails(),
	}

	details.Memberships = o.Memberships.ToDetailsWithOrganizationDetails(details)

	return details
}

// getOrganizationWithMemberships fetches an organization from the equinix metal api with membership user information.
func (c *Client) getOrganizationWithMemberships(ctx context.Context, id string) (*Organization, error) {
	var org Organization

	_, err := c.DoRequest(ctx, http.MethodGet, organizationsPath+"/"+id+"?include=memberships.user", nil, &org)
	if err != nil {
		return nil, fmt.Errorf("error loading organization: %w", err)
	}

	return &org, nil
}

// GetOrganizationDetails fetches the organization id provided with its memberships.
func (c *Client) GetOrganizationDetails(ctx context.Context, id gidx.PrefixedID) (*models.OrganizationDetails, error) {
	org, err := c.getOrganizationWithMemberships(ctx, id.String()[gidx.PrefixPartLength+1:])
	if err != nil {
		return nil, err
	}

	return org.ToDetails(), nil
}