package main

import (
	"encoding/json"
	"errors"
	"slices"
	"strings"
	"testing"
	"time"

	"mesh-delivery-checker/internal/check"
)

func TestTheToolsServedAreTheFiveReadTools(t *testing.T) {
	var names []string
	for _, tl := range Tools(check.Reader{}) {
		names = append(names, tl.Name)
		if tl.Description == "" || tl.Run == nil {
			t.Errorf("%s has no description or no run", tl.Name)
		}
	}
	want := []string{check.VerdictsReadTool, check.PullReadTool, check.KeptReadTool, check.PreviewsReadTool, check.StatusReadTool}
	if !slices.Equal(names, want) {
		t.Errorf("tools = %v, want %v", names, want)
	}
	// With nothing to read from a tool says so and changes nothing.
	for _, tl := range Tools(check.Reader{}) {
		if tl.Name == check.StatusReadTool {
			continue // it answers from what it can read, and says what it could not
		}
		if _, err := tl.Run(map[string]any{"repository": "novox/x", "number": float64(1)}); err == nil {
			t.Errorf("%s answered with no state to read", tl.Name)
		}
	}
}

// memStore is a tries state in memory.
type memStore struct{ vals map[string]json.RawMessage }

func (m *memStore) Keys() ([]string, error) {
	var out []string
	for k := range m.vals {
		out = append(out, k)
	}
	return out, nil
}
func (m *memStore) Get(key string) (json.RawMessage, error) { return m.vals[key], nil }
func (m *memStore) Create(key string, value []byte) error {
	if _, ok := m.vals[key]; ok {
		return errors.New("exists")
	}
	m.vals[key] = value
	return nil
}

func TestTheTryToolsAskAndReadATry(t *testing.T) { // ADR 0501 §5, the agreed interface with mesh-controller's try
	store := &memStore{vals: map[string]json.RawMessage{}}
	tools := TryTools(Trying{Tries: store, Now: func() time.Time { return time.Unix(1, 5) },
		Trunks: func() (map[string]string, error) {
			return map[string]string{"novox/mesh-delivery": strings.Repeat("a", 40)}, nil
		}})
	if len(tools) != 2 || tools[0].Name != "checker_try" || tools[1].Name != "checker_try_read" {
		t.Fatalf("tools = %+v", tools)
	}
	out, err := tools[0].Run(map[string]any{"repository": "novox/mesh-delivery", "head": strings.Repeat("1", 40), "trunk": "main"})
	if err != nil {
		t.Fatal(err)
	}
	id := out.(map[string]any)["id"].(string)
	if id != "try-1000000005" {
		t.Errorf("id = %q", id)
	}
	raw, err := tools[1].Run(map[string]any{"id": id})
	if err != nil || !strings.Contains(string(raw.(json.RawMessage)), `"state":"queued"`) {
		t.Errorf("read = %s, %v", raw, err)
	}
	if _, err := tools[0].Run(map[string]any{"repository": "novox/hq", "head": strings.Repeat("1", 40)}); err == nil ||
		err.Error() != "no level of novox/hq is checked by the checker" {
		t.Errorf("hq: %v", err)
	}
}