package adaptercfg

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
	"time"

	"github.com/tegwick/fluid-telegram/internal/secrets"
	"github.com/tegwick/fluid-telegram/internal/spec"
	"github.com/tegwick/fluid-telegram/internal/state"
)

func provisioned() *state.Resolved {
	now := time.Now()
	return &state.Resolved{
		Campaign: "hall-of-helix",
		Bot:      state.Bot{Username: "HelixForgeBot", ID: 42},
		Channels: map[string]state.Channel{
			spec.Test: {ChatID: -1001, AdminRights: []string{spec.PostMessages}, TestPublicationAt: &now},
			spec.Live: {ChatID: -2002, Username: "hallofhelix", AdminRights: []string{spec.PostMessages}},
		},
	}
}

func TestFromResolvedPicksOneChannel(t *testing.T) {
	cfg, err := FromResolved(provisioned(), spec.Test, "bao:platform/x/bot-token")
	if err != nil {
		t.Fatal(err)
	}
	if cfg.ChatID != -1001 || cfg.Channel != spec.Test {
		t.Fatalf("got %+v", cfg)
	}
	cfg, err = FromResolved(provisioned(), spec.Live, "bao:platform/x/bot-token")
	if err != nil {
		t.Fatal(err)
	}
	if cfg.ChatID != -2002 {
		t.Fatalf("public chat id = %d", cfg.ChatID)
	}
}

func TestFromResolvedRefusesUnprovisioned(t *testing.T) {
	if _, err := FromResolved(&state.Resolved{}, spec.Test, "ref"); err == nil {
		t.Fatal("accepted an empty state")
	}
	rs := provisioned()
	delete(rs.Channels, spec.Live)
	rs.Channels[spec.Test] = state.Channel{ChatID: -1001, AdminRights: []string{spec.PostMessages}}
	if _, err := FromResolved(rs, spec.Live, "ref"); err == nil {
		t.Fatal("accepted a public channel that has not been provisioned")
	}
}

func TestEnvFileHasNoToken(t *testing.T) {
	cfg, _ := FromResolved(provisioned(), spec.Test, "bao:platform/x/bot-token")
	out := cfg.EnvFile()
	for _, line := range strings.Split(out, "\n") {
		if strings.HasPrefix(line, "TELEGRAM_BOT_TOKEN=") {
			t.Fatal("env file emitted a token value")
		}
	}
	if !strings.Contains(out, "TELEGRAM_CHANNEL_ID=-1001") {
		t.Fatalf("missing chat id:\n%s", out)
	}
	if !strings.Contains(out, "TELEGRAM_BOT_TOKEN_REF=bao:platform/x/bot-token") {
		t.Fatalf("missing token ref:\n%s", out)
	}
	if strings.Contains(out, "operator-session") {
		t.Fatal("adapter config mentioned the operator session")
	}
}

func TestLoadTokenReadsOnlyTheBotToken(t *testing.T) {
	var requested []string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		requested = append(requested, r.URL.Path)
		if strings.Contains(r.URL.Path, secrets.KeyOperatorSession) {
			t.Errorf("adapter requested the operator session: %s", r.URL.Path)
			w.WriteHeader(http.StatusForbidden)
			return
		}
		if !strings.HasSuffix(r.URL.Path, "/"+secrets.KeyBotToken) {
			t.Errorf("unexpected path %s", r.URL.Path)
			w.WriteHeader(http.StatusNotFound)
			return
		}
		json.NewEncoder(w).Encode(map[string]any{
			"data": map[string]any{"data": map[string]string{"token": "123:abc"}},
		})
	}))
	t.Cleanup(srv.Close)
	t.Setenv("BAO_ADDR", srv.URL)
	t.Setenv("BAO_TOKEN", "test-token")
	store, err := secrets.NewFromEnv("hall-of-helix")
	if err != nil {
		t.Fatal(err)
	}
	got, err := LoadToken(context.Background(), store)
	if err != nil {
		t.Fatal(err)
	}
	if got != "123:abc" {
		t.Fatalf("token = %q", got)
	}
	for _, p := range requested {
		if strings.Contains(p, secrets.KeyOperatorSession) || strings.Contains(p, secrets.KeyOperatorApp) {
			t.Fatalf("adapter store was asked for %s", p)
		}
	}
}

func TestBotAPIChatIDPrefixesChannelIDs(t *testing.T) {
	if got := BotAPIChatID(4427430639); got != -1004427430639 {
		t.Fatalf("BotAPIChatID(4427430639) = %d", got)
	}
	if got := BotAPIChatID(-1001); got != -1001 {
		t.Fatalf("an id already in Bot API form changed: %d", got)
	}
	rs := provisioned()
	rs.Channels[spec.Test] = state.Channel{ChatID: 4427430639, AdminRights: []string{spec.PostMessages}}
	cfg, err := FromResolved(rs, spec.Test, "ref")
	if err != nil || cfg.ChatID != -1004427430639 {
		t.Fatalf("FromResolved chat id = %d, err %v", cfg.ChatID, err)
	}
}