feat: add download command

data/data.json

@@ -21,6 +21,10 @@
         {
           "internal": "data/kitty",
           "external": "~/.config/kitty"
+        },
+        {
+          "internal": "data/kitty/mocha.conf",
+          "url": "https://raw.githubusercontent.com/catppuccin/kitty/main/mocha.conf"
         }
       ]
     },

data/kitty/mocha.conf

@@ -1,6 +1,6 @@
 # vim:ft=kitty
 
-## name:     Catppuccin Kitty Diff Mocha
+## name:     Catppuccin Kitty Mocha
 ## author:   Catppuccin Org
 ## license:  MIT
 ## upstream: https://github.com/catppuccin/kitty/blob/main/mocha.conf

internal/cli/action.go

@@ -21,73 +21,77 @@ func (a *action) runHelp(c *cli.Context) error {
 }
 
 func (a *action) runInstall(c *cli.Context) error {
-	a.getFlags(c)
-	a.log("start %s\n", installCommand)
-
-	cfg, err := a.loadConfig()
+	cfg, err := a.loadConfig(c, installCommand)
 	if err != nil {
 		return err
 	}
 
 	if err := cfg.Install(); err != nil {
-		return fmt.Errorf("failed to install config: %w", err)
+		return fmt.Errorf("config: failed to install: %w", err)
 	}
 
 	return nil
 }
 
 func (a *action) runUpdate(c *cli.Context) error {
-	a.getFlags(c)
-	a.log("start %s\n", updateCommand)
-
-	cfg, err := a.loadConfig()
+	cfg, err := a.loadConfig(c, updateCommand)
 	if err != nil {
 		return err
 	}
 
 	if err := cfg.Update(); err != nil {
-		return fmt.Errorf("failed to update config: %w", err)
+		return fmt.Errorf("config: failed to update: %w", err)
+	}
+
+	return nil
+}
+
+func (a *action) runDownload(c *cli.Context) error {
+	cfg, err := a.loadConfig(c, downloadCommand)
+	if err != nil {
+		return err
+	}
+
+	if err := cfg.Download(); err != nil {
+		return fmt.Errorf("config: failed to download: %w", err)
 	}
 
 	return nil
 }
 
 func (a *action) runClean(c *cli.Context) error {
-	a.getFlags(c)
-	a.log("start %s\n", cleanCommand)
-
-	cfg, err := a.loadConfig()
+	cfg, err := a.loadConfig(c, cleanCommand)
 	if err != nil {
 		return err
 	}
 
 	if err := cfg.Clean(); err != nil {
-		return fmt.Errorf("failed to clean config: %w", err)
+		return fmt.Errorf("config: failed to clean: %w", err)
 	}
 
 	return nil
 }
 
 func (a *action) runDiff(c *cli.Context) error {
-	a.getFlags(c)
-	a.log("start %s\n", diffCommand)
-
-	cfg, err := a.loadConfig()
+	cfg, err := a.loadConfig(c, diffCommand)
 	if err != nil {
 		return err
 	}
 
 	if err := cfg.Diff(); err != nil {
-		return fmt.Errorf("failed to compare config: %w", err)
+		return fmt.Errorf("config: failed to compare: %w", err)
 	}
 
 	return nil
 }
 
-func (a *action) loadConfig() (config.Config, error) {
+func (a *action) loadConfig(c *cli.Context, command string) (config.Config, error) {
+	a.getFlags(c)
+	a.log("start %s with flags %+v\n", command, a.flags)
+
 	cfgReal, cfgDemo, err := config.LoadConfig(currentDir)
 	if err != nil {
-		return nil, fmt.Errorf("failed to load config: %w", err)
+		return nil, fmt.Errorf("config: failed to load: %w", err)
 	}
 
 	if a.flags.dryRun {

internal/cli/app.go

@@ -13,34 +13,36 @@ const (
 	appName  = "dotfiles"
 	appUsage = "managing dotfiles"
 
-	// flags
-	verboseFlag = "verbose"
-	dryRunFlag  = "dry-run"
-
-	// commands
 	installCommand = "install"
-	updateCommand  = "update"
-	cleanCommand   = "clean"
-	diffCommand    = "diff"
+	installUsage   = "install user configs from dotfiles"
 
-	// flag usages
-	verboseUsage = "show what is going on"
-	dryRunUsage  = "demo mode without actually changing anything"
+	updateCommand = "update"
+	updateUsage   = "update dotfiles from user configs"
 
-	// command usages
-	installUsage = "install user configs from dotfiles"
-	updateUsage  = "update dotfiles from user configs"
+	downloadCommand = "download"
+	downloadUsage   = "download configs from internet (theme for example)"
+
+	cleanCommand = "clean"
 	cleanUsage   = "clean unused dotfiles"
-	diffUsage    = "diff dotfiles with user configs"
+
+	diffCommand = "diff"
+	diffUsage   = "diff dotfiles with user configs"
+
+	verboseFlag  = "verbose"
+	verboseUsage = "show what is going on"
+
+	dryRunFlag  = "dry-run"
+	dryRunUsage = "demo mode without actually changing anything"
 
 	currentDir = "."
 )
 
 var (
-	// command aliases
-	installAliases = []string{"i"}
-	updateAliases  = []string{"u"}
-	cleanAliases   = []string{"c"}
+	installAliases  = []string{"i"}
+	updateAliases   = []string{"u"}
+	downloadAliases = []string{"d"}
+	cleanAliases    = []string{"c"}
+	diffAliases     = []string{"df"}
 )
 
 // denyOSes contains OS which is not supported
@@ -92,6 +94,22 @@ func NewApp() *App {
 				},
 				Action: a.runUpdate,
 			},
+			{
+				Name:    downloadCommand,
+				Aliases: downloadAliases,
+				Usage:   downloadUsage,
+				Flags: []cli.Flag{
+					&cli.BoolFlag{
+						Name:  verboseFlag,
+						Usage: verboseUsage,
+					},
+					&cli.BoolFlag{
+						Name:  dryRunFlag,
+						Usage: dryRunUsage,
+					},
+				},
+				Action: a.runDownload,
+			},
 			{
 				Name:    cleanCommand,
 				Aliases: cleanAliases,
@@ -109,8 +127,9 @@ func NewApp() *App {
 				Action: a.runClean,
 			},
 			{
-				Name:  diffCommand,
-				Usage: diffUsage,
+				Name:    diffCommand,
+				Aliases: diffAliases,
+				Usage:   diffUsage,
 				Flags: []cli.Flag{
 					&cli.BoolFlag{
 						Name:  verboseFlag,

internal/config/config.go

@@ -3,8 +3,10 @@ package config
 import (
 	"encoding/json"
 	"fmt"
+	"net/http"
 	"os"
 	"path/filepath"
+	"time"
 )
 
 const (
@@ -17,6 +19,7 @@ type Config interface {
 	Update() error
 	Clean() error
 	Diff() error
+	Download() error
 }
 
 type configApps struct {
@@ -30,7 +33,8 @@ type App struct {
 
 type Path struct {
 	Internal string `json:"internal"`
-	External string `json:"external"`
+	External string `json:"external,omitempty"`
+	URL      string `json:"url,omitempty"`
 }
 
 // LoadConfig return config, configDemo
@@ -47,6 +51,9 @@ func LoadConfig(path string) (*configReal, *configDemo, error) {
 	}
 
 	cfgReal := configReal{
+		httpClient: &http.Client{
+			Timeout: time.Second * 5,
+		},
 		configApps: cfgApps,
 	}
 

internal/config/config_demo.go

@@ -11,6 +11,10 @@ var _ Config = (*configDemo)(nil)
 func (c *configDemo) Install() error {
 	for _, app := range c.Apps {
 		for _, p := range app.Paths {
+			if p.External == "" {
+				continue
+			}
+
 			fmt.Printf("Replace %s -> %s\n", p.Internal, p.External)
 		}
 	}
@@ -21,6 +25,10 @@ func (c *configDemo) Install() error {
 func (c *configDemo) Update() error {
 	for _, app := range c.Apps {
 		for _, p := range app.Paths {
+			if p.External == "" {
+				continue
+			}
+
 			fmt.Printf("Replace %s -> %s\n", p.External, p.Internal)
 		}
 	}
@@ -28,6 +36,20 @@ func (c *configDemo) Update() error {
 	return nil
 }
 
+func (c *configDemo) Download() error {
+	for _, app := range c.Apps {
+		for _, p := range app.Paths {
+			if p.URL == "" {
+				continue
+			}
+
+			fmt.Printf("Download %s -> %s\n", p.URL, p.Internal)
+		}
+	}
+
+	return nil
+}
+
 func (c *configDemo) Clean() error {
 	unusedDirs, err := getUnusedDirs(c.Apps)
 	if err != nil {

internal/config/config_real.go

@@ -2,6 +2,8 @@ package config
 
 import (
 	"fmt"
+	"io"
+	"net/http"
 	"os"
 	"path/filepath"
 
@@ -10,6 +12,7 @@ import (
 )
 
 type configReal struct {
+	httpClient *http.Client
 	configApps
 }
 
@@ -19,6 +22,10 @@ var _ Config = (*configReal)(nil)
 func (c *configReal) Install() error {
 	for _, app := range c.Apps {
 		for _, p := range app.Paths {
+			if p.External == "" {
+				continue
+			}
+
 			if err := copy.Replace(p.Internal, p.External); err != nil {
 				return fmt.Errorf("failed to replace %s -> %s: %w", p.Internal, p.External, err)
 			}
@@ -32,6 +39,10 @@ func (c *configReal) Install() error {
 func (c *configReal) Update() error {
 	for _, app := range c.Apps {
 		for _, p := range app.Paths {
+			if p.External == "" {
+				continue
+			}
+
 			if err := copy.Replace(p.External, p.Internal); err != nil {
 				return fmt.Errorf("failed to replace %s -> %s: %w", p.External, p.Internal, err)
 			}
@@ -41,6 +52,34 @@ func (c *configReal) Update() error {
 	return nil
 }
 
+func (c *configReal) Download() error {
+	for _, app := range c.Apps {
+		for _, p := range app.Paths {
+			if p.URL == "" {
+				continue
+			}
+
+			httpRsp, err := c.httpClient.Get(p.URL)
+			if err != nil {
+				return fmt.Errorf("http client: failed to get: %w", err)
+			}
+
+			data, err := io.ReadAll(httpRsp.Body)
+			if err != nil {
+				return fmt.Errorf("io: failed to read all: %w", err)
+			}
+
+			if err := os.WriteFile(p.Internal, data, 0o600); err != nil {
+				return fmt.Errorf("os: failed to write file: %w", err)
+			}
+
+			httpRsp.Body.Close()
+		}
+	}
+
+	return nil
+}
+
 // Clean remove unused config inside config dir
 func (c *configReal) Clean() error {
 	unusedDirs, err := getUnusedDirs(c.Apps)