feat(zellij): implement PlanForce

internal/modules/zellij/zellij.go

@@ -3,7 +3,6 @@ package zellij
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -111,5 +110,26 @@ 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) zellij",
+		Kind:        module.ActionPackageInstall,
+		Exec:        func(ctx context.Context) error { return m.pm.Reinstall(ctx, []string{"zellij"}) },
+	}}
+	if m.cfg.ConfigURL != "" {
+		p, err := configPath()
+		if err != nil {
+			return module.Plan{}, err
+		}
+		actions = append(actions, module.Action{
+			Description: "redownload zellij config (force)",
+			Kind:        module.ActionFileWrite,
+			Exec: func(ctx context.Context) error {
+				if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+					return err
+				}
+				return platform.Download(ctx, m.cfg.ConfigURL, p, 0o644)
+			},
+		})
+	}
+	return module.Plan{Actions: actions}, nil
 }

internal/modules/zellij/zellij_test.go

@@ -81,4 +81,45 @@ func TestZellijInstalledPresentEmptyPlan(t *testing.T) {
 	}
 }
 
+func TestPlanForceReinstallsAndRewritesConfig(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+	os.MkdirAll(filepath.Join(home, ".config", "zellij"), 0o755)
+	os.WriteFile(filepath.Join(home, ".config", "zellij", "config.kdl"), []byte("old\n"), 0o644)
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.Write([]byte("fresh {}\n"))
+	}))
+	defer srv.Close()
+	r := &fakeRunner{installed: map[string]bool{"zellij": true}}
+	m := New(config.ZellijConfig{ConfigURL: srv.URL}, platform.NewPacman(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 := 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 !sawReinstall {
+		t.Fatalf("no pacman reinstall call; calls=%v", r.runCalls)
+	}
+	got, err := os.ReadFile(filepath.Join(home, ".config", "zellij", "config.kdl"))
+	if err != nil {
+		t.Fatalf("config not written: %v", err)
+	}
+	if string(got) != "fresh {}\n" {
+		t.Fatalf("config not overwritten: %q", got)
+	}
+}
+
 var _ module.Module = Module{}