feat: initial implementation for mods download

CHANGELOG.md

@@ -4,14 +4,14 @@ The following sections list the changes for unreleased.
 
 ## Summary
 
- * Chg #1: Initial release of basic version
+ * Chg #3: Initial release of basic version
 
 ## Details
 
- * Change #1: Initial release of basic version
+ * Change #3: Initial release of basic version
 
    Just prepared an initial basic version which could be released to the public.
 
-   https://github.com/webhippie/cursecli/issues/1
+   https://github.com/webhippie/cursecli/issues/3
 
 

changelog/unreleased/initial-release.md

@@ -2,4 +2,4 @@ Change: Initial release of basic version
 
 Just prepared an initial basic version which could be released to the public.
 
-https://github.com/webhippie/cursecli/issues/1
+https://github.com/webhippie/cursecli/issues/3

pkg/command/command.go

@@ -16,9 +16,10 @@ func Run() error {
 		Name:     "cursecli",
 		Version:  version.String,
 		Usage:    "Commandline client for Curseforge",
-		Authors:  authorList(),
-		Flags:    globalFlags(cfg),
-		Commands: globalCommands(cfg),
+		Authors:  AuthorList(),
+		Flags:    GlobalFlags(cfg),
+		Before:   GlobalBefore(cfg),
+		Commands: GlobalCmds(cfg),
 	}
 
 	cli.HelpFlag = &cli.BoolFlag{
@@ -36,7 +37,8 @@ func Run() error {
 	return app.Run(os.Args)
 }
 
-func authorList() []*cli.Author {
+// AuthorList defines the list of authors.
+func AuthorList() []*cli.Author {
 	return []*cli.Author{
 		{
 			Name:  "Thomas Boerger",
@@ -45,7 +47,8 @@ func authorList() []*cli.Author {
 	}
 }
 
-func globalFlags(cfg *config.Config) []cli.Flag {
+// GlobalFlags defines the list of global flags.
+func GlobalFlags(cfg *config.Config) []cli.Flag {
 	return []cli.Flag{
 		&cli.StringFlag{
 			Name:        "log-level",
@@ -71,8 +74,16 @@ func globalFlags(cfg *config.Config) []cli.Flag {
 	}
 }
 
-func globalCommands(cfg *config.Config) []*cli.Command {
+// GlobalBefore defines a global hook for setup.
+func GlobalBefore(cfg *config.Config) cli.BeforeFunc {
+	return func(c *cli.Context) error {
+		return setupLogger(cfg)
+	}
+}
+
+// GlobalCmds defines the global commands.
+func GlobalCmds(cfg *config.Config) []*cli.Command {
 	return []*cli.Command{
-		Download(cfg),
+		ManifestCmd(cfg),
 	}
 }

pkg/command/manifest.go

@@ -0,0 +1,120 @@
+package command
+
+import (
+	"github.com/rs/zerolog/log"
+	"github.com/urfave/cli/v2"
+	"github.com/webhippie/cursecli/pkg/config"
+	"github.com/webhippie/cursecli/pkg/forgesvc"
+	"github.com/webhippie/cursecli/pkg/manifest"
+)
+
+// ManifestCmd provides the sub-command manifest.
+func ManifestCmd(cfg *config.Config) *cli.Command {
+	return &cli.Command{
+		Name:        "manifest",
+		Usage:       "Manifest related commands",
+		Flags:       ManifestFlags(cfg),
+		Subcommands: ManifestCmds(cfg),
+	}
+}
+
+// ManifestFlags defines the flags for the manifest sub-command.
+func ManifestFlags(cfg *config.Config) []cli.Flag {
+	return []cli.Flag{
+		&cli.StringFlag{
+			Name:        "manifest",
+			Value:       "manifest.json",
+			Usage:       "Path to manifest to parse",
+			EnvVars:     []string{"CURSECLI_MANIFEST"},
+			Destination: &cfg.General.Manifest,
+		},
+	}
+}
+
+// ManifestCmds defines the sub-commands for the manifest command.
+func ManifestCmds(cfg *config.Config) []*cli.Command {
+	return []*cli.Command{
+		ManifestDownloadCmd(cfg),
+	}
+}
+
+// ManifestDownloadCmd provides the sub-command manifest download.
+func ManifestDownloadCmd(cfg *config.Config) *cli.Command {
+	return &cli.Command{
+		Name:        "download",
+		Usage:       "Download related commands",
+		Flags:       ManifestDownloadFlags(cfg),
+		Subcommands: ManifestDownloadCmds(cfg),
+	}
+}
+
+// ManifestDownloadFlags defines the flags for the manifest download sub-command.
+func ManifestDownloadFlags(cfg *config.Config) []cli.Flag {
+	return []cli.Flag{}
+}
+
+// ManifestDownloadCmds defines the sub-commands for the manifest download command.
+func ManifestDownloadCmds(cfg *config.Config) []*cli.Command {
+	return []*cli.Command{
+		ManifestDownloadModsCmd(cfg),
+	}
+}
+
+// ManifestDownloadModsCmd provides the sub-command manifest download mods.
+func ManifestDownloadModsCmd(cfg *config.Config) *cli.Command {
+	return &cli.Command{
+		Name:   "mods",
+		Usage:  "Download mods defined within manifest",
+		Flags:  ManifestDownloadModsFlags(cfg),
+		Action: ManifestDownloadModsAction(cfg),
+	}
+}
+
+// ManifestDownloadModsFlags defines the flags for the manifest download mods sub-command.
+func ManifestDownloadModsFlags(cfg *config.Config) []cli.Flag {
+	return []cli.Flag{
+		&cli.StringFlag{
+			Name:        "path",
+			Value:       "mods/",
+			Usage:       "Path to download destination",
+			EnvVars:     []string{"CURSECLI_PATH", "CURSECLI_DOWNLOAD_MODS_PATH"},
+			Destination: &cfg.General.Path,
+		},
+	}
+}
+
+// ManifestDownloadModsAction implements the action for the manifest download mods command.
+func ManifestDownloadModsAction(cfg *config.Config) cli.ActionFunc {
+	return func(c *cli.Context) error {
+		m, err1 := manifest.New(
+			manifest.WithPath(c.String("manifest")),
+		)
+
+		if err1 != nil {
+			log.Error().
+				Err(err1).
+				Msg("Failed to parse manifest")
+
+			return err1
+		}
+
+		f, err2 := forgesvc.New(
+			forgesvc.WithPath(c.String("path")),
+			forgesvc.WithManifest(m),
+		)
+
+		if err2 != nil {
+			log.Error().
+				Err(err2).
+				Msg("Failed to initalize client")
+
+			return err2
+		}
+
+		if err := f.DownloadManifest(); err != nil {
+			return err
+		}
+
+		return nil
+	}
+}

pkg/forgesvc/forgesvc.go

@@ -0,0 +1,130 @@
+package forgesvc
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+
+	"github.com/rs/zerolog/log"
+	"github.com/webhippie/cursecli/pkg/manifest"
+)
+
+const (
+	downloadURL = "https://addons-ecs.forgesvc.net/api/v2/addon/%d/file/%d"
+)
+
+// Forgesvc defines the forgesvc itself.
+type Forgesvc struct {
+	HTTPClient *http.Client
+	Path       string
+	Manifest   manifest.Manifest
+}
+
+// New parses and prepares a manifest definition.
+func New(opts ...Option) (*Forgesvc, error) {
+	sopts := newOptions(opts...)
+
+	return &Forgesvc{
+		HTTPClient: sopts.HTTPClient,
+		Path:       sopts.Path,
+		Manifest:   sopts.Manifest,
+	}, nil
+}
+
+// DownloadManifest downloads all mods defined within a manifest.
+func (f *Forgesvc) DownloadManifest() error {
+	if err := os.MkdirAll(f.Path, os.ModePerm); err != nil {
+		log.Error().
+			Err(err).
+			Str("path", f.Path).
+			Msg("Failed to create mod directory")
+
+		return err
+	}
+
+	for _, file := range f.Manifest.Files {
+		resp, err := f.HTTPClient.Get(
+			fmt.Sprintf(
+				downloadURL,
+				file.ProjectID,
+				file.FileID,
+			),
+		)
+
+		if err != nil {
+			log.Error().
+				Err(err).
+				Int("project", file.ProjectID).
+				Int("file", file.FileID).
+				Msg("Failed to fetch mod details")
+
+			return err
+		}
+
+		defer resp.Body.Close()
+		body, err := ioutil.ReadAll(resp.Body)
+
+		if err != nil {
+			log.Error().
+				Err(err).
+				Int("project", file.ProjectID).
+				Int("file", file.FileID).
+				Msg("Failed to read mod details")
+
+			return err
+		}
+
+		download := File{}
+
+		if err := json.Unmarshal(body, &download); err != nil {
+			log.Error().
+				Err(err).
+				Int("project", file.ProjectID).
+				Int("file", file.FileID).
+				Msg("Failed to parse mod details")
+
+			return err
+		}
+
+		if err := f.downloadFile(
+			download.Name,
+			download.URL,
+		); err != nil {
+			return err
+		}
+
+		log.Info().
+			Int("project", file.ProjectID).
+			Int("file", file.FileID).
+			Str("name", download.Name).
+			Msg("Successfully downloaded mod")
+	}
+
+	return nil
+}
+
+func (f *Forgesvc) downloadFile(name, url string) error {
+	resp, err := f.HTTPClient.Get(
+		url,
+	)
+
+	if err != nil {
+		return err
+	}
+
+	defer resp.Body.Close()
+	out, err := os.Create(filepath.Join(f.Path, name))
+
+	if err != nil {
+		return err
+	}
+
+	defer out.Close()
+	_, err = io.Copy(out, resp.Body)
+
+	return err
+}