package client

import (
	"context"
	"fmt"
	"net/url"

	"forge.cadoles.com/Cadoles/emissary/internal/datastore"
	"github.com/pkg/errors"
)

type QueryTenantsOptionFunc func(*QueryTenantsOptions)

type QueryTenantsOptions struct {
	Options []OptionFunc
	Limit   *int
	Offset  *int
	IDs     []TenantID
}

func WithQueryTenantsOptions(funcs ...OptionFunc) QueryTenantsOptionFunc {
	return func(opts *QueryTenantsOptions) {
		opts.Options = funcs
	}
}

func WithQueryTenantsLimit(limit int) QueryTenantsOptionFunc {
	return func(opts *QueryTenantsOptions) {
		opts.Limit = &limit
	}
}

func WithQueryTenantsOffset(offset int) QueryTenantsOptionFunc {
	return func(opts *QueryTenantsOptions) {
		opts.Offset = &offset
	}
}

func WithQueryTenantsID(ids ...datastore.TenantID) QueryTenantsOptionFunc {
	return func(opts *QueryTenantsOptions) {
		opts.IDs = ids
	}
}

func (c *Client) QueryTenants(ctx context.Context, funcs ...QueryTenantsOptionFunc) ([]*Tenant, int, error) {
	options := &QueryTenantsOptions{}
	for _, fn := range funcs {
		fn(options)
	}

	query := url.Values{}

	if options.IDs != nil && len(options.IDs) > 0 {
		query.Set("ids", joinSlice(options.IDs))
	}

	path := fmt.Sprintf("/api/v1/tenants?%s", query.Encode())

	response := withResponse[struct {
		Tenants []*datastore.Tenant `json:"tenants"`
		Total   int                 `json:"total"`
	}]()

	if options.Options == nil {
		options.Options = make([]OptionFunc, 0)
	}

	if err := c.apiGet(ctx, path, &response, options.Options...); err != nil {
		return nil, 0, errors.WithStack(err)
	}

	if response.Error != nil {
		return nil, 0, errors.WithStack(response.Error)
	}

	return response.Data.Tenants, response.Data.Total, nil
}