package main

import (
	"encoding/json"
	"os"
	"strings"
	"testing"
)

func manifest(t *testing.T) map[string]any {
	t.Helper()
	raw, err := os.ReadFile("../../module.json")
	if err != nil {
		t.Fatal(err)
	}
	var m map[string]any
	if err := json.Unmarshal(raw, &m); err != nil {
		t.Fatal(err)
	}
	return m
}

// 1516/AC6: minio claims object-store (scope mesh) serving link, invokes seat:mesh-controller.seats, builds the Go
// bundle, and no tool named minio_presigned_url remains.
func TestManifestClaimsTheSeat(t *testing.T) {
	m := manifest(t)
	seats, _ := m["seats"].([]any)
	if len(seats) != 1 || seats[0].(map[string]any)["name"] != "object-store" || seats[0].(map[string]any)["scope"] != "mesh" ||
		len(seats[0].(map[string]any)["serves"].([]any)) != 1 || seats[0].(map[string]any)["serves"].([]any)[0] != "link" {
		t.Fatalf("the seat object-store is not declared in seats (the mesh defines no seat a module does not declare): %v", seats)
	}
	claims := m["claims"].([]any)
	if len(claims) != 1 {
		t.Fatalf("claims: %v", claims)
	}
	c := claims[0].(map[string]any)
	serves := c["serves"].([]any)
	if c["name"] != "object-store" || c["scope"] != "mesh" || len(serves) != 1 || serves[0] != "link" {
		t.Fatalf("claim: %v", c)
	}
	inv := m["invokes"].([]any)
	if len(inv) != 1 || inv[0] != "seat:mesh-controller.seats" {
		t.Fatalf("invokes: %v", inv)
	}
	var goBundle map[string]any
	for _, a := range m["build"].(map[string]any)["artifacts"].([]any) {
		if a.(map[string]any)["from"] == "cmd/object-store" {
			goBundle = a.(map[string]any)
		}
	}
	if goBundle == nil || goBundle["language"] != "go" || goBundle["kind"] != "bundle" {
		t.Fatalf("no Go bundle for cmd/object-store: %v", goBundle)
	}
	env := goBundle["env"].(map[string]any)
	for _, word := range []string{ConfigWord, LinksWord, ReceivesWord} {
		if env[word] == nil {
			t.Errorf("the Go bundle's env lacks %s", word)
		}
	}
	for _, f := range []string{"../../tools/index.ts", "../../client.ts"} {
		raw, err := os.ReadFile(f)
		if err != nil {
			t.Fatal(err)
		}
		if strings.Contains(string(raw), "minio_presigned_url") || strings.Contains(string(raw), "presignedUrl") {
			t.Errorf("%s still has the root-signed link", f)
		}
	}
}

// 1516/AC1: the file the Go tool reads is rendered from files/object-store.json with the facts the s3-bucket binding
// renders for a consumer: at is the providing machine's `at`, port the S3 endpoint's port (brother's files/store.json
// is the writer of that shape: scheme, at, port, region).
func TestStoreFileSaysWhatTheBindingSays(t *testing.T) {
	raw, err := os.ReadFile("../../files/object-store.json")
	if err != nil {
		t.Fatal(err)
	}
	var f map[string]string
	if err := json.Unmarshal(raw, &f); err != nil {
		t.Fatal(err)
	}
	if f["at"] != "${machine:at}" || f["port"] != "${port:9000}" || f["scheme"] != "http" || f["region"] != "eu-west" {
		t.Fatalf("object-store.json: %v", f)
	}
	brother, err := os.ReadFile("../../../brother/files/store.json")
	if err != nil {
		t.Fatal(err)
	}
	var b map[string]string
	if err := json.Unmarshal(brother, &b); err != nil {
		t.Fatal(err)
	}
	for _, k := range []string{"scheme", "at", "port", "region"} {
		if _, ok := b[k]; !ok {
			t.Errorf("brother's store.json has no %s: the shape moved", k)
		}
		if _, ok := f[k]; !ok {
			t.Errorf("object-store.json has no %s", k)
		}
	}
	// The same values: minio's serves.s3-bucket.port is the port its S3 listen declares.
	m := manifest(t)
	if port := m["serves"].(map[string]any)["s3-bucket"].(map[string]any)["port"]; port != float64(9000) {
		t.Errorf("serves port %v", port)
	}
}