feat(zsh): implement PlanForce

internal/modules/zsh/zsh.go

@@ -3,7 +3,6 @@ package zsh
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -133,5 +132,42 @@ func (m Module) Verify(ctx context.Context) error {
 }
 
 func (m Module) PlanForce(ctx context.Context) (module.Plan, error) {
-	return module.Plan{}, errors.New("PlanForce not implemented")
+	actions := []module.Action{{
+		Description: "pacman -S (force) zsh",
+		Kind:        module.ActionPackageInstall,
+		Exec:        func(ctx context.Context) error { return m.pm.Reinstall(ctx, []string{"zsh"}) },
+	}}
+	actions = append(actions, module.Action{
+		Description: "reclone oh-my-zsh from " + m.cfg.OhMyZshRepo + " (force)",
+		Kind:        module.ActionGitClone,
+		Exec: func(ctx context.Context) error {
+			omz, err := omzHome()
+			if err != nil {
+				return err
+			}
+			if err := os.RemoveAll(omz); err != nil {
+				return err
+			}
+			return m.git.Clone(ctx, m.cfg.OhMyZshRepo, omz)
+		},
+	})
+	for _, p := range m.cfg.Plugins {
+		p := p
+		actions = append(actions, module.Action{
+			Description: "reclone plugin " + p.Name + " (force)",
+			Kind:        module.ActionGitClone,
+			Exec: func(ctx context.Context) error {
+				omz, err := omzHome()
+				if err != nil {
+					return err
+				}
+				dest := filepath.Join(omz, "custom", "plugins", p.Name)
+				if err := os.RemoveAll(dest); err != nil {
+					return err
+				}
+				return m.git.Clone(ctx, p.Repo, dest)
+			},
+		})
+	}
+	return module.Plan{Actions: actions}, nil
 }

internal/modules/zsh/zsh_test.go

@@ -114,4 +114,46 @@ func TestZshPlanApplyInstallsEverything(t *testing.T) {
 	}
 }
 
+func TestPlanForceReinstallsEverything(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+	os.MkdirAll(filepath.Join(home, ".oh-my-zsh", ".git"), 0o755)
+	os.MkdirAll(filepath.Join(home, ".oh-my-zsh", "custom", "plugins", "zsh-autosuggestions", ".git"), 0o755)
+	r := &fakeRunner{installed: map[string]bool{"zsh": true}}
+	m := New(config.ZshConfig{
+		OhMyZshRepo: "https://x/omz.git",
+		Plugins:     []config.ZshPlugin{{Name: "zsh-autosuggestions", Repo: "https://x/a.git"}},
+	}, platform.NewPacman(r), platform.GitClient{Runner: r})
+	plan, err := m.PlanForce(context.Background())
+	if err != nil {
+		t.Fatalf("PlanForce: %v", err)
+	}
+	if plan.IsEmpty() {
+		t.Fatal("force plan must not be empty")
+	}
+	for _, a := range plan.Actions {
+		if err := a.Exec(context.Background()); err != nil {
+			t.Fatalf("Exec: %v", err)
+		}
+	}
+	sawReinstall, sawOMZ, sawPlugin := false, false, false
+	for _, c := range r.runCalls {
+		if len(c) >= 4 && c[0] == "sudo" && c[1] == "pacman" && c[2] == "-S" && c[3] == "--noconfirm" {
+			sawReinstall = true
+		}
+		if len(c) >= 4 && c[0] == "git" && c[3] == "https://x/omz.git" {
+			sawOMZ = true
+		}
+		if len(c) >= 4 && c[0] == "git" && c[3] == "https://x/a.git" {
+			sawPlugin = true
+		}
+	}
+	if !sawReinstall || !sawOMZ || !sawPlugin {
+		t.Fatalf("missing force action; calls=%v", r.runCalls)
+	}
+	if _, err := os.Stat(filepath.Join(home, ".oh-my-zsh")); !os.IsNotExist(err) {
+		t.Fatalf("oh-my-zsh dir should have been removed; stat err=%v", err)
+	}
+}
+
 var _ module.Module = Module{}