"""Unit: EgressProxy route lift + routes.yaml render + token
resolution (PRD 0017)."""

import json
import unittest

from claude_bottle.egress_proxy import (
    egress_proxy_render_routes,
    egress_proxy_resolve_token_values,
    egress_proxy_routes_for_bottle,
    egress_proxy_token_env_map,
)
from claude_bottle.log import Die
from claude_bottle.manifest import Manifest


def _bottle(routes):
    return Manifest.from_json_obj({
        "bottles": {"dev": {"egress_proxy": {"routes": routes}}},
        "agents": {"demo": {"skills": [], "prompt": "", "bottle": "dev"}},
    }).bottles["dev"]


class TestRoutesForBottle(unittest.TestCase):
    def test_authenticated_route_gets_slot(self):
        b = _bottle([{
            "host": "api.github.com",
            "auth": {"scheme": "Bearer", "token_ref": "GH_PAT"},
        }])
        routes = egress_proxy_routes_for_bottle(b)
        self.assertEqual(1, len(routes))
        r = routes[0]
        self.assertEqual("api.github.com", r.host)
        self.assertEqual("Bearer", r.auth_scheme)
        self.assertEqual("EGRESS_PROXY_TOKEN_0", r.token_env)
        self.assertEqual("GH_PAT", r.token_ref)
        self.assertEqual((), r.path_allowlist)

    def test_unauthenticated_route_has_empty_auth_fields(self):
        b = _bottle([{"host": "github.com", "path_allowlist": ["/x/"]}])
        routes = egress_proxy_routes_for_bottle(b)
        r = routes[0]
        self.assertEqual("", r.auth_scheme)
        self.assertEqual("", r.token_env)
        self.assertEqual("", r.token_ref)
        self.assertEqual(("/x/",), r.path_allowlist)

    def test_shared_token_ref_collapses_to_one_slot(self):
        b = _bottle([
            {"host": "api.github.com",
             "auth": {"scheme": "Bearer", "token_ref": "GH_PAT"}},
            {"host": "github.com",
             "auth": {"scheme": "Bearer", "token_ref": "GH_PAT"}},
        ])
        routes = egress_proxy_routes_for_bottle(b)
        slots = {r.token_env for r in routes}
        self.assertEqual({"EGRESS_PROXY_TOKEN_0"}, slots)

    def test_distinct_token_refs_get_distinct_slots(self):
        b = _bottle([
            {"host": "a.example",
             "auth": {"scheme": "Bearer", "token_ref": "T1"}},
            {"host": "b.example",
             "auth": {"scheme": "Bearer", "token_ref": "T2"}},
        ])
        routes = egress_proxy_routes_for_bottle(b)
        slots = [r.token_env for r in routes]
        self.assertEqual(["EGRESS_PROXY_TOKEN_0", "EGRESS_PROXY_TOKEN_1"], slots)

    def test_unauthenticated_routes_dont_consume_slots(self):
        # A bare-pass route between two authenticated routes mustn't
        # skip a slot number — slot 0 + slot 1 stay tight.
        b = _bottle([
            {"host": "a.example",
             "auth": {"scheme": "Bearer", "token_ref": "T1"}},
            {"host": "passthrough.example"},
            {"host": "b.example",
             "auth": {"scheme": "Bearer", "token_ref": "T2"}},
        ])
        routes = egress_proxy_routes_for_bottle(b)
        authed = [r.token_env for r in routes if r.token_env]
        self.assertEqual(["EGRESS_PROXY_TOKEN_0", "EGRESS_PROXY_TOKEN_1"], authed)
        self.assertEqual("", routes[1].token_env)


class TestTokenEnvMap(unittest.TestCase):
    def test_only_authenticated_routes_contribute(self):
        b = _bottle([
            {"host": "a.example",
             "auth": {"scheme": "Bearer", "token_ref": "T1"}},
            {"host": "passthrough.example"},
        ])
        routes = egress_proxy_routes_for_bottle(b)
        m = egress_proxy_token_env_map(routes)
        self.assertEqual({"EGRESS_PROXY_TOKEN_0": "T1"}, m)

    def test_no_routes_empty(self):
        self.assertEqual({}, egress_proxy_token_env_map(()))


class TestRenderRoutes(unittest.TestCase):
    def test_authenticated_route_serialised_with_auth_fields(self):
        b = _bottle([{
            "host": "api.github.com",
            "auth": {"scheme": "Bearer", "token_ref": "GH_PAT"},
            "path_allowlist": ["/repos/x/"],
        }])
        routes = egress_proxy_routes_for_bottle(b)
        payload = json.loads(egress_proxy_render_routes(routes))
        self.assertEqual(
            [{
                "host": "api.github.com",
                "path_allowlist": ["/repos/x/"],
                "auth_scheme": "Bearer",
                "token_env": "EGRESS_PROXY_TOKEN_0",
            }],
            payload["routes"],
        )

    def test_unauthenticated_route_omits_auth_fields(self):
        # auth_scheme + token_env keys are absent when the route was
        # declared without an `auth` block — the addon's parser
        # enforces both-or-neither, so emitting empty strings would
        # round-trip as a partial pair and crash.
        b = _bottle([{"host": "github.com", "path_allowlist": ["/x/"]}])
        routes = egress_proxy_routes_for_bottle(b)
        payload = json.loads(egress_proxy_render_routes(routes))
        entry = payload["routes"][0]
        self.assertNotIn("auth_scheme", entry)
        self.assertNotIn("token_env", entry)

    def test_no_path_allowlist_omits_field(self):
        b = _bottle([{
            "host": "api.anthropic.com",
            "auth": {"scheme": "Bearer", "token_ref": "CL"},
        }])
        routes = egress_proxy_routes_for_bottle(b)
        payload = json.loads(egress_proxy_render_routes(routes))
        self.assertNotIn("path_allowlist", payload["routes"][0])

    def test_round_trip_through_addon_core(self):
        # Render here → parse in the addon must succeed for every
        # combination the manifest can produce.
        from claude_bottle.egress_proxy_addon_core import load_routes
        b = _bottle([
            {"host": "api.github.com",
             "auth": {"scheme": "Bearer", "token_ref": "GH_PAT"},
             "path_allowlist": ["/repos/x/"]},
            {"host": "github.com", "path_allowlist": ["/x/"]},
            {"host": "api.anthropic.com"},
        ])
        routes = egress_proxy_routes_for_bottle(b)
        addon_routes = load_routes(egress_proxy_render_routes(routes))
        self.assertEqual(3, len(addon_routes))
        self.assertEqual("Bearer", addon_routes[0].auth_scheme)
        self.assertEqual("EGRESS_PROXY_TOKEN_0", addon_routes[0].token_env)
        self.assertEqual("", addon_routes[1].auth_scheme)
        self.assertEqual("", addon_routes[2].auth_scheme)


class TestResolveTokenValues(unittest.TestCase):
    def test_reads_host_env(self):
        out = egress_proxy_resolve_token_values(
            {"EGRESS_PROXY_TOKEN_0": "GH_PAT"},
            {"GH_PAT": "the-value"},
        )
        self.assertEqual({"EGRESS_PROXY_TOKEN_0": "the-value"}, out)

    def test_missing_token_ref_dies(self):
        with self.assertRaises(Die):
            egress_proxy_resolve_token_values(
                {"EGRESS_PROXY_TOKEN_0": "GH_PAT"},
                {},
            )

    def test_empty_token_ref_dies(self):
        with self.assertRaises(Die):
            egress_proxy_resolve_token_values(
                {"EGRESS_PROXY_TOKEN_0": "GH_PAT"},
                {"GH_PAT": ""},
            )


if __name__ == "__main__":
    unittest.main()