package routing_test

import (
	"context"
	"encoding/json"
	"io"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/mathiasbq/supervisor/internal/routing"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestLoggerLogDecision(t *testing.T) {
	var captured map[string]any
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		assert.Equal(t, http.MethodPost, r.Method)
		assert.Equal(t, "/mcp", r.URL.Path)
		body, _ := io.ReadAll(r.Body)
		require.NoError(t, json.Unmarshal(body, &captured))
		_ = json.NewEncoder(w).Encode(map[string]any{"jsonrpc": "2.0", "id": 1, "result": map[string]any{"content": []map[string]any{{"type": "text", "text": "ok"}}}})
	}))
	defer srv.Close()

	l := routing.NewLogger(srv.URL)
	err := l.LogDecision(context.Background(), routing.LogEntry{
		SessionID:   "sess-1",
		Skill:       "code_review",
		Decision:    "local",
		Message:     "model=qwen35, pass_rate=0.94",
		ProjectRoot: "/home/x/proj",
		DurationMs:  1234,
		Failed:      false,
	})
	require.NoError(t, err)

	params := captured["params"].(map[string]any)
	assert.Equal(t, "tools/call", captured["method"])
	assert.Equal(t, "session_log", params["name"])

	args := params["arguments"].(map[string]any)
	assert.Equal(t, "_routing", args["skill"])
	assert.Equal(t, "decide", args["phase"])
	assert.Equal(t, "skip", args["final_status"])
	assert.Contains(t, args["message"].(string), "code_review: local")
	assert.Equal(t, "sess-1", args["session_id"])
	assert.Equal(t, "/home/x/proj", args["project_root"])
	assert.Equal(t, float64(1234), args["duration_ms"])
}

func TestLoggerLogFailure(t *testing.T) {
	var captured map[string]any
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		body, _ := io.ReadAll(r.Body)
		_ = json.Unmarshal(body, &captured)
		_ = json.NewEncoder(w).Encode(map[string]any{"jsonrpc": "2.0", "id": 1, "result": map[string]any{}})
	}))
	defer srv.Close()

	l := routing.NewLogger(srv.URL)
	err := l.LogDecision(context.Background(), routing.LogEntry{
		SessionID: "s", Skill: "debug", Decision: "local", Message: "litellm down", Failed: true,
	})
	require.NoError(t, err)

	args := captured["params"].(map[string]any)["arguments"].(map[string]any)
	assert.Equal(t, "fail", args["final_status"])
}

func TestLoggerSurfacesUpstreamError(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
		http.Error(w, "down", http.StatusBadGateway)
	}))
	defer srv.Close()

	l := routing.NewLogger(srv.URL)
	err := l.LogDecision(context.Background(), routing.LogEntry{Skill: "x", SessionID: "y", Decision: "local"})
	require.Error(t, err)
}