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|
package modrinth
import (
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"os"
"time"
)
const (
apiBase = "https://api.modrinth.com/v2"
userAgent = "benson/2.0 (github.com/hachem-wtf/benson)"
)
type File struct {
URL string `json:"url"`
Filename string `json:"filename"`
Primary bool `json:"primary"`
}
type Version struct {
ID string `json:"id"`
VersionNumber string `json:"version_number"`
DatePublished time.Time `json:"date_published"`
GameVersions []string `json:"game_versions"`
Loaders []string `json:"loaders"`
Files []File `json:"files"`
}
type Client struct {
http *http.Client
}
func NewClient() *Client {
return &Client{http: &http.Client{Timeout: 30 * time.Second}}
}
type SearchHit struct {
Slug string `json:"slug"`
Title string `json:"title"`
Description string `json:"description"`
Downloads int `json:"downloads"`
}
func (c *Client) Search(query, mcVersion, loader string) ([]SearchHit, error) {
facets := fmt.Sprintf(`[["project_type:mod"],["categories:%s"],["versions:%s"]]`, loader, mcVersion)
endpoint := fmt.Sprintf("%s/search?limit=20&index=relevance&query=%s&facets=%s",
apiBase, url.QueryEscape(query), url.QueryEscape(facets))
req, err := http.NewRequest(http.MethodGet, endpoint, nil)
if err != nil {
return nil, err
}
req.Header.Set("User-Agent", userAgent)
resp, err := c.http.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("modrinth: search returned %s", resp.Status)
}
var result struct {
Hits []SearchHit `json:"hits"`
}
if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
return nil, err
}
return result.Hits, nil
}
func (c *Client) GetVersions(slug string) ([]Version, error) {
url := fmt.Sprintf("%s/project/%s/version", apiBase, slug)
req, err := http.NewRequest(http.MethodGet, url, nil)
if err != nil {
return nil, err
}
req.Header.Set("User-Agent", userAgent)
resp, err := c.http.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("modrinth: %s returned %s", slug, resp.Status)
}
var versions []Version
if err := json.NewDecoder(resp.Body).Decode(&versions); err != nil {
return nil, err
}
return versions, nil
}
func LatestVersion(versions []Version) *Version {
if len(versions) == 0 {
return nil
}
best := 0
for i := 1; i < len(versions); i++ {
if versions[i].DatePublished.After(versions[best].DatePublished) {
best = i
}
}
return &versions[best]
}
func FindVersion(versions []Version, versionNumber string) *Version {
for i := range versions {
if versions[i].VersionNumber == versionNumber {
return &versions[i]
}
}
return nil
}
func CompatibleVersion(versions []Version, mcVersion, loader string) *Version {
var compatible []Version
for _, v := range versions {
if !contains(v.GameVersions, mcVersion) {
continue
}
if loader != "" && !contains(v.Loaders, loader) {
continue
}
compatible = append(compatible, v)
}
return LatestVersion(compatible)
}
func (c *Client) Download(url, dest string) error {
req, err := http.NewRequest(http.MethodGet, url, nil)
if err != nil {
return err
}
req.Header.Set("User-Agent", userAgent)
resp, err := c.http.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("download: %s returned %s", url, resp.Status)
}
f, err := os.Create(dest)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(f, resp.Body)
return err
}
func contains(list []string, s string) bool {
for _, item := range list {
if item == s {
return true
}
}
return false
}
|
