Add nasctl: Go NAS control plane with React frontend

internal/engine/apply.go

@@ -0,0 +1,73 @@
+package engine
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/darroyo/nasctl/internal/db"
+	"github.com/darroyo/nasctl/internal/modules"
+)
+
+type ModuleResult struct {
+	Module  string `json:"module"`
+	Applied bool   `json:"applied"`
+	Error   string `json:"error,omitempty"`
+}
+
+type ApplyResult struct {
+	Results []ModuleResult `json:"results"`
+}
+
+type Engine struct {
+	modules []modules.Module
+}
+
+func New(mods ...modules.Module) *Engine {
+	return &Engine{modules: mods}
+}
+
+func (e *Engine) DirtyList(ctx context.Context, database *db.DB) ([]db.DirtyModule, error) {
+	return database.ListDirty()
+}
+
+func (e *Engine) ApplyAll(ctx context.Context, database *db.DB) (ApplyResult, error) {
+	result := ApplyResult{Results: make([]ModuleResult, 0)}
+	var errors []string
+
+	for _, mod := range e.modules {
+		dirty, err := mod.IsDirty(ctx, database)
+		if err != nil {
+			errors = append(errors, fmt.Sprintf("%s: check dirty: %v", mod.Name(), err))
+			result.Results = append(result.Results, ModuleResult{
+				Module: mod.Name(),
+				Error:  err.Error(),
+			})
+			continue
+		}
+		if !dirty {
+			continue
+		}
+
+		if err := mod.Apply(ctx, database); err != nil {
+			msg := err.Error()
+			errors = append(errors, fmt.Sprintf("%s: %s", mod.Name(), msg))
+			_ = database.AppendApplyLog(mod.Name(), msg, false)
+			result.Results = append(result.Results, ModuleResult{
+				Module: mod.Name(),
+				Error:  msg,
+			})
+			continue
+		}
+
+		result.Results = append(result.Results, ModuleResult{
+			Module:  mod.Name(),
+			Applied: true,
+		})
+	}
+
+	if len(errors) > 0 {
+		return result, fmt.Errorf("%s", strings.Join(errors, "; "))
+	}
+	return result, nil
+}