feat: add frequency option to limit how often installers run

README.md

@@ -146,6 +146,7 @@ The following flags are supported to customize behavior:
 | `-s`, `--summary`    | Enable installation summary (default).                |
 | `-S`, `--no-summary` | Disable installation summary.                         |
 | `-f`, `--filter`     | Filter by installer name (can be used multiple times) |
+| `--ignore-frequency` | Ignore frequency limits and run all installers.       |
 | `-h`, `--help`       | Display help information and exit.                    |
 | `-v`, `--version`    | Display version information and exit.                 |
 
@@ -222,6 +223,7 @@ See [Installer Configuration](./docs/installer-configuration.md#categories) for
 | `env_shell`        | Object (optional)     | Shell to use for command executions. See `env_shell` subfields below.                                                                                                                                                                                                                                                                                                              |
 | `env_shell.macos`  | String (optional)     | Shell to use for macOS command executions. If not specified, the default shell will be used.                                                                                                                                                                                                                                                                                       |
 | `env_shell.linux`  | String (optional)     | Shell to use for Linux command executions. If not specified, the default shell will be used.                                                                                                                                                                                                                                                                                       |
+| `frequency`        | String (optional)     | Limits how often the installer runs. After a successful install/update, the next run is skipped until the duration elapses. Supports units: `s`, `m`, `h`, `d`, `w` (e.g., `1d`, `1w`, `12h`). Use `--ignore-frequency` to bypass.                                                                                                                                                 |
 | `skip_summary`     | Boolean or Object     | Exclude this installer from the summary. Set to `true` to skip both install/update summaries, or use `{install: true}` / `{update: true}` for granular control. Useful for installers that always run.                                                                                                                                                                             |
 
 ### Supported `type` of Installers

appconfig/appconfig.go

@@ -62,6 +62,8 @@ type AppConfig struct {
 	MachineAliases *map[string]string `json:"machine_aliases" yaml:"machine_aliases"`
 	// Filter is a list of installer names to filter by.
 	Filter []string
+	// IgnoreFrequency overrides frequency checks, running all installers regardless.
+	IgnoreFrequency bool
 }
 
 // GetRepoUpdateMode returns the repo update mode for the given installer type,
@@ -93,6 +95,8 @@ type AppCliConfig struct {
 	ShowLogFile bool
 	// ShowMachineID indicates that only the machine ID should be shown.
 	ShowMachineID bool
+	// IgnoreFrequency overrides frequency checks, running all installers regardless.
+	IgnoreFrequency bool
 }
 
 // AppConfigDefaults provides default configurations for installer types.
@@ -131,6 +135,7 @@ func ParseConfig(overrides *AppCliConfig) (*AppConfig, error) {
 			appConfig.Summary = overrides.Summary
 		}
 		appConfig.Filter = overrides.Filter
+		appConfig.IgnoreFrequency = overrides.IgnoreFrequency
 		return appConfig, nil
 	}
 	return nil, fmt.Errorf("unsupported config file extension %s (filename: %s)", ext, file)

appconfig/installer_data.go

@@ -89,6 +89,10 @@ type InstallerData struct {
 	SkipSummary *SkipSummary `json:"skip_summary"      yaml:"skip_summary"`
 	// Verbose enables verbose output for the installer's native commands.
 	Verbose *bool `json:"verbose"           yaml:"verbose"`
+	// Frequency is a prettified duration (e.g. "1d", "1w", "3m") that limits how often
+	// the installer runs. After a successful install/update, the next run will be skipped
+	// until the frequency period has elapsed.
+	Frequency *string `json:"frequency"          yaml:"frequency"`
 }
 
 // InstallerType represents the type of an installer.

cmd/root.go

@@ -14,15 +14,16 @@ import (
 
 var (
 	// Flag variables
-	debug     bool
-	noDebug   bool
-	update    bool
-	noUpdate  bool
-	summary   bool
-	noSummary bool
-	filter    []string
-	logFile   string
-	machineID bool
+	debug           bool
+	noDebug         bool
+	update          bool
+	noUpdate        bool
+	summary         bool
+	noSummary       bool
+	filter          []string
+	logFile         string
+	machineID       bool
+	ignoreFrequency bool
 
 	// The parsed CLI config
 	cliConfig *appconfig.AppCliConfig
@@ -129,6 +130,9 @@ func init() {
 
 	// Machine ID flag
 	rootCmd.Flags().BoolVarP(&machineID, "machine-id", "m", false, "Show machine ID and exit")
+
+	// Ignore frequency flag
+	rootCmd.Flags().BoolVar(&ignoreFrequency, "ignore-frequency", false, "Ignore frequency limits and run all installers")
 }
 
 // SetVersion sets the version for the root command.
@@ -142,14 +146,15 @@ func SetVersion(version string) {
 // buildCliConfig creates an AppCliConfig from the parsed Cobra flags.
 func buildCliConfig(cmd *cobra.Command, args []string) *appconfig.AppCliConfig {
 	config := &appconfig.AppCliConfig{
-		ConfigFile:    "",
-		Debug:         nil,
-		CheckUpdates:  nil,
-		Summary:       nil,
-		Filter:        filter,
-		LogFile:       nil,
-		ShowLogFile:   false,
-		ShowMachineID: machineID,
+		ConfigFile:      "",
+		Debug:           nil,
+		CheckUpdates:    nil,
+		Summary:         nil,
+		Filter:          filter,
+		LogFile:         nil,
+		ShowLogFile:     false,
+		ShowMachineID:   machineID,
+		IgnoreFrequency: ignoreFrequency,
 	}
 
 	// Handle debug flag

docs/command-line-interface.md

@@ -29,6 +29,7 @@ You can call `sofmani` with the following flags to alter the behavior for the cu
 | `-f`, `--filter`     | Filter by installer name (can be used multiple times)\* |
 | `-l`, `--log-file`   | Set log file path, or show current path if no value.    |
 | `-m`, `--machine-id` | Show machine ID and exit.                               |
+| `--ignore-frequency` | Ignore frequency limits and run all installers.         |
 | `-h`, `--help`       | Display help information and exit.                      |
 | `-v`, `--version`    | Display version information and exit.                   |
 

docs/installer-configuration.md

@@ -293,6 +293,44 @@ These fields are shared by all installer types. Some fields may vary in behavior
           verbose: true
     ```
 
+- **`frequency`**
+  - **Type**: String (optional)
+  - **Description**: Limits how often the installer runs. After a successful install or update, the
+    next run will be skipped until the specified duration has elapsed. The timestamp of the last
+    successful run is stored in the sofmani cache directory.
+  - **Format**: A prettified duration string. Multiple components can be combined. Supported units:
+    - `s` — seconds (e.g., `60s`)
+    - `m` — minutes (e.g., `30m`)
+    - `h` — hours (e.g., `12h`)
+    - `d` — days (e.g., `1d`)
+    - `w` — weeks (e.g., `1w`)
+    - Combined: `1d12h`, `1w2d`
+  - **Default**: Not set (installer runs every time).
+  - **Note**: Use the `--ignore-frequency` CLI flag to bypass frequency checks for all installers.
+  - **Examples**:
+
+    ```yaml
+    # Only check for updates once a day
+    - name: neovim
+      type: brew
+      frequency: 1d
+
+    # Only run once a week
+    - name: sync-dotfiles
+      type: rsync
+      frequency: 1w
+      opts:
+        source: ~/.dotfiles/.config
+        destination: ~/.config
+
+    # Run at most every 12 hours
+    - name: my-tool
+      type: shell
+      frequency: 12h
+      opts:
+        command: ./install.sh
+    ```
+
 - **`skip_summary`**
   - **Type**: Boolean or Object (optional)
   - **Description**: Exclude this installer from the installation summary. Useful for installers

installer/frequency.go

@@ -0,0 +1,73 @@
+package installer
+
+import (
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/chenasraf/sofmani/logger"
+	"github.com/chenasraf/sofmani/utils"
+)
+
+// frequencyCacheFileName returns the cache file name for a given installer name,
+// escaping characters that are not safe for file names.
+func frequencyCacheFileName(name string) string {
+	replacer := strings.NewReplacer(
+		"/", "__",
+		"\\", "__",
+		":", "__",
+		" ", "_",
+	)
+	return "freq_" + replacer.Replace(name)
+}
+
+// checkFrequency checks whether enough time has passed since the last successful run
+// for an installer with the given name and frequency string.
+// Returns true if the installer should run (frequency elapsed or no previous run).
+func checkFrequency(name string, frequency string) (bool, error) {
+	dur, err := utils.ParsePrettyDuration(frequency)
+	if err != nil {
+		return false, err
+	}
+
+	cacheDir, err := utils.GetCacheDir()
+	if err != nil {
+		return true, nil // if we can't get cache dir, just run
+	}
+
+	cacheFile := filepath.Join(cacheDir, frequencyCacheFileName(name))
+	data, err := os.ReadFile(cacheFile)
+	if err != nil {
+		// No previous run recorded
+		return true, nil
+	}
+
+	ts, err := strconv.ParseInt(strings.TrimSpace(string(data)), 10, 64)
+	if err != nil {
+		// Corrupt cache file, just run
+		logger.Debug("Invalid frequency cache for %s, will run", logger.H(name))
+		return true, nil
+	}
+
+	lastRun := time.Unix(ts, 0)
+	if time.Since(lastRun) < dur {
+		return false, nil
+	}
+
+	return true, nil
+}
+
+// writeFrequencyTimestamp writes the current timestamp to the frequency cache file
+// for the given installer name.
+func writeFrequencyTimestamp(name string) error {
+	cacheDir, err := utils.GetCacheDir()
+	if err != nil {
+		return err
+	}
+
+	cacheFile := filepath.Join(cacheDir, frequencyCacheFileName(name))
+	ts := strconv.FormatInt(time.Now().Unix(), 10)
+	return os.WriteFile(cacheFile, []byte(ts), 0644)
+}

installer/frequency_test.go

@@ -0,0 +1,78 @@
+package installer
+
+import (
+	"os"
+	"path/filepath"
+	"strconv"
+	"testing"
+	"time"
+
+	"github.com/chenasraf/sofmani/utils"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFrequencyCacheFileName(t *testing.T) {
+	assert.Equal(t, "freq_my-installer", frequencyCacheFileName("my-installer"))
+	assert.Equal(t, "freq_path__to__thing", frequencyCacheFileName("path/to/thing"))
+	assert.Equal(t, "freq_has_spaces", frequencyCacheFileName("has spaces"))
+	assert.Equal(t, "freq_back__slash", frequencyCacheFileName("back\\slash"))
+}
+
+func TestCheckFrequency_NoPreviousRun(t *testing.T) {
+	shouldRun, err := checkFrequency("nonexistent-installer-test", "1d")
+	assert.NoError(t, err)
+	assert.True(t, shouldRun)
+}
+
+func TestCheckFrequency_RecentRun(t *testing.T) {
+	name := "test-freq-recent"
+	cacheDir, err := utils.GetCacheDir()
+	require.NoError(t, err)
+
+	cacheFile := filepath.Join(cacheDir, frequencyCacheFileName(name))
+	ts := strconv.FormatInt(time.Now().Unix(), 10)
+	err = os.WriteFile(cacheFile, []byte(ts), 0644)
+	require.NoError(t, err)
+	defer func() { _ = os.Remove(cacheFile) }()
+
+	shouldRun, err := checkFrequency(name, "1d")
+	assert.NoError(t, err)
+	assert.False(t, shouldRun)
+}
+
+func TestCheckFrequency_ExpiredRun(t *testing.T) {
+	name := "test-freq-expired"
+	cacheDir, err := utils.GetCacheDir()
+	require.NoError(t, err)
+
+	cacheFile := filepath.Join(cacheDir, frequencyCacheFileName(name))
+	ts := strconv.FormatInt(time.Now().Add(-48*time.Hour).Unix(), 10)
+	err = os.WriteFile(cacheFile, []byte(ts), 0644)
+	require.NoError(t, err)
+	defer func() { _ = os.Remove(cacheFile) }()
+
+	shouldRun, err := checkFrequency(name, "1d")
+	assert.NoError(t, err)
+	assert.True(t, shouldRun)
+}
+
+func TestWriteFrequencyTimestamp(t *testing.T) {
+	name := "test-freq-write"
+	cacheDir, err := utils.GetCacheDir()
+	require.NoError(t, err)
+
+	cacheFile := filepath.Join(cacheDir, frequencyCacheFileName(name))
+	defer func() { _ = os.Remove(cacheFile) }()
+
+	err = writeFrequencyTimestamp(name)
+	assert.NoError(t, err)
+
+	data, err := os.ReadFile(cacheFile)
+	require.NoError(t, err)
+
+	ts, err := strconv.ParseInt(string(data), 10, 64)
+	require.NoError(t, err)
+
+	assert.InDelta(t, time.Now().Unix(), ts, 2)
+}

installer/installer.go

@@ -263,6 +263,18 @@ func RunInstaller(config *appconfig.AppConfig, installer IInstaller) (*summary.I
 		return result, nil
 	}
 
+	// Check frequency limits (unless --ignore-frequency is set)
+	if !config.IgnoreFrequency && info.Frequency != nil && *info.Frequency != "" {
+		shouldRun, err := checkFrequency(name, *info.Frequency)
+		if err != nil {
+			logger.Warn("Failed to check frequency for %s: %v", logger.H(name), err)
+		} else if !shouldRun {
+			logger.Debug("%s: skipping due to frequency %s", logger.H(name), *info.Frequency)
+			result.Action = summary.ActionSkipped
+			return result, nil
+		}
+	}
+
 	logger.Debug("Checking %s: %s", logger.H(string(info.Type)), logger.H(name))
 	installed, err := installer.CheckIsInstalled()
 	if err != nil {
@@ -330,6 +342,14 @@ func RunInstaller(config *appconfig.AppConfig, installer IInstaller) (*summary.I
 		result.Action = summary.ActionInstalled
 	}
 
+	// Write frequency timestamp on successful install/update
+	if info.Frequency != nil && *info.Frequency != "" &&
+		(result.Action == summary.ActionInstalled || result.Action == summary.ActionUpgraded) {
+		if err := writeFrequencyTimestamp(name); err != nil {
+			logger.Warn("Failed to write frequency timestamp for %s: %v", logger.H(name), err)
+		}
+	}
+
 	// Collect child results for group/manifest installers
 	if provider, ok := installer.(IChildResultsProvider); ok {
 		result.Children = provider.GetChildResults()

utils/duration.go

@@ -0,0 +1,60 @@
+package utils
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// ParsePrettyDuration parses a human-friendly duration string like "1d", "2w", "3m", "60s", "1h".
+// Supported units: s (seconds), m (minutes), h (hours), d (days), w (weeks).
+// Multiple components can be combined, e.g. "1d12h".
+func ParsePrettyDuration(s string) (time.Duration, error) {
+	s = strings.TrimSpace(s)
+	if s == "" {
+		return 0, fmt.Errorf("empty duration string")
+	}
+
+	var total time.Duration
+	remaining := s
+
+	for len(remaining) > 0 {
+		// Find the first non-digit character
+		i := 0
+		for i < len(remaining) && remaining[i] >= '0' && remaining[i] <= '9' {
+			i++
+		}
+		if i == 0 {
+			return 0, fmt.Errorf("invalid duration %q: expected number", s)
+		}
+		if i >= len(remaining) {
+			return 0, fmt.Errorf("invalid duration %q: missing unit", s)
+		}
+
+		num, err := strconv.ParseInt(remaining[:i], 10, 64)
+		if err != nil {
+			return 0, fmt.Errorf("invalid duration %q: %w", s, err)
+		}
+
+		unit := remaining[i]
+		remaining = remaining[i+1:]
+
+		switch unit {
+		case 's':
+			total += time.Duration(num) * time.Second
+		case 'm':
+			total += time.Duration(num) * time.Minute
+		case 'h':
+			total += time.Duration(num) * time.Hour
+		case 'd':
+			total += time.Duration(num) * 24 * time.Hour
+		case 'w':
+			total += time.Duration(num) * 7 * 24 * time.Hour
+		default:
+			return 0, fmt.Errorf("invalid duration %q: unknown unit %q", s, string(unit))
+		}
+	}
+
+	return total, nil
+}

utils/duration_test.go

@@ -0,0 +1,41 @@
+package utils
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestParsePrettyDuration(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected time.Duration
+		wantErr  bool
+	}{
+		{"60s", 60 * time.Second, false},
+		{"5m", 5 * time.Minute, false},
+		{"2h", 2 * time.Hour, false},
+		{"1d", 24 * time.Hour, false},
+		{"1w", 7 * 24 * time.Hour, false},
+		{"3d", 3 * 24 * time.Hour, false},
+		{"1d12h", 36 * time.Hour, false},
+		{"1w2d", 9 * 24 * time.Hour, false},
+		{"", 0, true},
+		{"abc", 0, true},
+		{"5", 0, true},
+		{"5x", 0, true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.input, func(t *testing.T) {
+			result, err := ParsePrettyDuration(tt.input)
+			if tt.wantErr {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+				assert.Equal(t, tt.expected, result)
+			}
+		})
+	}
+}