package budget

import "fmt"

func (c config) validate() error {
	for _, name := range keys(c.Profiles) {
		if _, err := c.properties(name); err != nil {
			return fmt.Errorf("profiles.%s: %w", name, err)
		}
	}
	check := func(field, name string) error {
		if _, err := c.getProfile(name); err != nil {
			return fmt.Errorf("%s: %w", field, err)
		}
		return nil
	}
	for _, field := range []struct {
		name   string
		groups map[string][]string
	}{
		{"apps", c.Apps}, {"units", c.Units}, {"prefixes", c.Prefixes},
	} {
		for _, name := range keys(field.groups) {
			if err := check(field.name+"."+name, name); err != nil {
				return err
			}
		}
	}
	for _, field := range []struct {
		name string
		refs map[string]string
	}{
		{"commands", c.Commands}, {"shared", c.Shared},
	} {
		for _, key := range keys(field.refs) {
			if err := check(field.name+"."+key, field.refs[key]); err != nil {
				return err
			}
		}
	}
	if c.Python != "" {
		if err := check("python", c.Python); err != nil {
			return err
		}
	}
	for i, device := range c.Devices {
		for _, name := range keys(device.Limits) {
			if err := check(fmt.Sprintf("devices[%d].limits.%s", i, name), name); err != nil {
				return err
			}
		}
	}
	for _, name := range keys(c.Prefixes) {
		for _, directory := range c.Prefixes[name] {
			if _, err := dropSection(directory); err != nil {
				return fmt.Errorf("prefixes.%s: %w", name, err)
			}
		}
	}
	return nil
}