"""Tests for installer core classes: state, milestone, controller, build."""
from __future__ import annotations

import os
from pathlib import Path
from unittest import mock

import pytest

from installer.state import InstallerState
from installer.milestone import Milestone, ProgressCallback
from installer.build import get_build_command, BuildMilestone
from installer.core.controller import ProleController


# ===== InstallerState =====

class TestInstallerState:
    def test_defaults(self):
        s = InstallerState()
        assert s.current_id is None
        assert s.data == {}
        assert s.inputs == {}
        assert s.config_data == {}
        assert s.errors == []
        assert s.progress == {}
        assert s.history == []
        assert s.completed == set()
        assert s.controller is None

    def test_mark_completed(self):
        s = InstallerState()
        s.mark_completed('step1')
        s.mark_completed('step2')
        assert 'step1' in s.completed
        assert 'step2' in s.completed

    def test_mark_completed_idempotent(self):
        s = InstallerState()
        s.mark_completed('step1')
        s.mark_completed('step1')
        assert len(s.completed) == 1

    def test_with_controller(self):
        s = InstallerState(controller='fake')
        assert s.controller == 'fake'

    def test_inputs_and_config(self):
        s = InstallerState(
            inputs={'key': 'val'},
            config_data={'section': {'k': 'v'}},
        )
        assert s.inputs['key'] == 'val'
        assert s.config_data['section']['k'] == 'v'


# ===== Milestone base class =====

class _DummyMilestone(Milestone):
    """Concrete subclass for testing the abstract base."""
    def execute(self, state, progress=None):
        if progress:
            progress("running", 0.5)

class TestMilestoneBase:
    def test_init(self):
        m = _DummyMilestone('test_id', 'Test Title')
        assert m.id == 'test_id'
        assert m.title == 'Test Title'

    def test_validate_default(self):
        m = _DummyMilestone('x', 'X')
        assert m.validate(InstallerState()) is None

    def test_next_default(self):
        m = _DummyMilestone('x', 'X')
        assert m.next(InstallerState()) is None

    def test_execute_with_progress(self):
        m = _DummyMilestone('x', 'X')
        msgs = []
        m.execute(InstallerState(), progress=lambda msg, p: msgs.append((msg, p)))
        assert ('running', 0.5) in msgs

    def test_parse_bool(self):
        m = _DummyMilestone('x', 'X')
        assert m._parse_bool('true') is True
        assert m._parse_bool('false') is False
        assert m._parse_bool(None) is False
        assert m._parse_bool(None, default=True) is True

    def test_run_cmd_list(self):
        m = _DummyMilestone('x', 'X')
        rc = m._run_cmd(['echo', 'hello'])
        assert rc == 0

    def test_run_cmd_string(self):
        m = _DummyMilestone('x', 'X')
        rc = m._run_cmd('echo hello')
        assert rc == 0

    def test_run_cmd_with_stdout(self):
        m = _DummyMilestone('x', 'X')
        lines = []
        rc = m._run_cmd(['echo', 'test_output'], on_stdout=lambda l: lines.append(l.strip()))
        assert rc == 0
        assert 'test_output' in lines

    def test_run_cmd_failure(self):
        m = _DummyMilestone('x', 'X')
        rc = m._run_cmd(['false'])
        assert rc != 0

    def test_run_cmd_bad_command(self):
        m = _DummyMilestone('x', 'X')
        rc = m._run_cmd(['/nonexistent/command'])
        assert rc == 1

    def test_get_script_env_basic(self):
        m = _DummyMilestone('x', 'X')
        state = InstallerState(
            inputs={
                'init_password.db_namespace': 'myns',
                'init_password.db_username': 'testuser',
                'init_password.db_password': 'secret123',
                'init_cluster.cluster_env': 'dev',
                'kerberos_config.realm': 'EXAMPLE.COM',
                'kerberos_config.kdc': '10.0.0.1',
                'kerberos_config.user': 'admin',
                'kerberos_config.password': 'krbpass',
                'kerberos_config.enabled': 'True',
                'init_cluster.at_rest_encryption_enabled': 'true',
            },
            config_data={},
        )
        env = m._get_script_env(state)
        assert env['NAMESPACE'] == 'myns'
        assert env['DB_PASSWORD'] == 'secret123'
        assert env['PROLE_DB_USER'] == 'testuser'
        assert env['PROLE_MODE'] == 'k3d'
        assert env['KRB5_REALM'] == 'EXAMPLE.COM'
        assert env['KERBEROS_ENABLED'] == 'True'
        assert env['AT_REST_ENCRYPTION_ENABLED'] == 'true'
        assert env['REALM'] == 'EXAMPLE.COM'
        assert env['DOMAIN'] == 'example.com'

    def test_get_script_env_defaults(self):
        m = _DummyMilestone('x', 'X')
        state = InstallerState(inputs={}, config_data={})
        env = m._get_script_env(state)
        assert env['NAMESPACE'] == 'default'
        assert env['PROLE_MODE'] == 'k3d'
        assert env['KERBEROS_ENABLED'] == 'False'

    def test_get_script_env_grafana_from_config(self):
        m = _DummyMilestone('x', 'X')
        state = InstallerState(
            inputs={'init_password.db_password': 'dbpw'},
            config_data={'Monitoring': {'GRAFANA_ADMIN_PASSWORD': 'grafanapw'}},
        )
        env = m._get_script_env(state)
        assert env['GRAFANA_ADMIN_PASSWORD'] == 'grafanapw'

    def test_get_script_env_grafana_fallback(self):
        m = _DummyMilestone('x', 'X')
        state = InstallerState(
            inputs={'init_password.db_password': 'dbpw'},
            config_data={},
        )
        env = m._get_script_env(state)
        assert env['GRAFANA_ADMIN_PASSWORD'] == 'dbpw'

    def test_get_script_env_k3s_mode(self):
        m = _DummyMilestone('x', 'X')
        state = InstallerState(
            inputs={
                'init_cluster.cluster_env': 'service',
                'init_cluster.k3s_server_url': 'myserver:6443',
                'init_cluster.k3s_token': 'mytoken',
            },
            config_data={},
        )
        env = m._get_script_env(state)
        assert env['PROLE_MODE'] == 'k3s'
        assert env['PROLE_K3S_SERVER'] == 'https://myserver:6443'
        assert env['PROLE_K3S_TOKEN'] == 'mytoken'

    def test_get_script_env_argocd_from_config(self):
        m = _DummyMilestone('x', 'X')
        state = InstallerState(
            inputs={},
            config_data={'Global': {'ARGOCD_NAMESPACE': 'custom-argocd', 'REGISTRY_NAMESPACE': 'custom-reg'}},
        )
        env = m._get_script_env(state)
        assert env['ARGOCD_NAMESPACE'] == 'custom-argocd'
        assert env['REGISTRY_NAMESPACE'] == 'custom-reg'


# ===== build.py =====

class TestBuildHelpers:
    def test_get_build_command(self, tmp_path):
        cmd = get_build_command(tmp_path, 'dev')
        assert 'cd' in cmd
        assert str(tmp_path) in cmd
        assert '# Dev' in cmd

    def test_get_build_command_service(self, tmp_path):
        cmd = get_build_command(tmp_path, 'service')
        assert '# Service' in cmd

    def test_get_build_command_none_env(self, tmp_path):
        cmd = get_build_command(tmp_path, None)
        assert '# Dev' in cmd


class TestBuildMilestone:
    def test_init(self, tmp_path):
        m = BuildMilestone(tmp_path, 'dev', 'next_step')
        assert m.id == 'build'
        assert m.title == 'Build'
        assert m._next_id == 'next_step'

    def test_validate_exists(self, tmp_path):
        m = BuildMilestone(tmp_path)
        assert m.validate(InstallerState()) is None

    def test_validate_missing(self):
        m = BuildMilestone(Path('/nonexistent/path'))
        result = m.validate(InstallerState())
        assert result is not None
        assert len(result) > 0

    def test_execute(self, tmp_path):
        m = BuildMilestone(tmp_path, 'dev')
        state = InstallerState()
        msgs = []
        m.execute(state, progress=lambda msg, p: msgs.append(msg))
        assert 'build.command' in state.data
        assert 'Build command prepared' in msgs

    def test_next(self, tmp_path):
        m = BuildMilestone(tmp_path, next_id='deploy')
        assert m.next(InstallerState()) == 'deploy'

    def test_next_none(self, tmp_path):
        m = BuildMilestone(tmp_path)
        assert m.next(InstallerState()) is None


# ===== ProleController =====

class TestProleController:
    def test_init(self, tmp_path):
        c = ProleController(tmp_path)
        assert c.project_root == tmp_path
        assert c.verbose is False
        assert c.state is not None

    def test_init_verbose(self, tmp_path):
        c = ProleController(tmp_path, verbose=True)
        assert c.verbose is True

    def test_check_docker_running(self, tmp_path):
        c = ProleController(tmp_path)
        result = c.check_docker_running()
        assert isinstance(result, bool)

    def test_get_prole_db_version_defaults(self, tmp_path):
        c = ProleController(tmp_path)
        version = c.get_prole_db_version()
        assert '17.7' in version  # default pg version
        assert '-' in version

    def test_get_prole_db_version_custom(self, tmp_path):
        pg_dir = tmp_path / 'conf' / 'postgresql'
        pg_dir.mkdir(parents=True)
        (pg_dir / '.version').write_text('16.2')
        db_dir = tmp_path / 'prole-db'
        db_dir.mkdir()
        (db_dir / '.version').write_text('42')
        c = ProleController(tmp_path)
        version = c.get_prole_db_version()
        assert version == '16.2-042'

    def test_run_milestones(self, tmp_path):
        c = ProleController(tmp_path)
        m1 = _DummyMilestone('step1', 'Step 1')
        m2 = _DummyMilestone('step2', 'Step 2')
        msgs = []
        c.run_milestones([m1, m2], progress_callback=lambda msg, p: msgs.append(msg))
        assert 'step1' in c.state.completed
        assert 'step2' in c.state.completed

    def test_run_milestones_no_callback(self, tmp_path):
        c = ProleController(tmp_path)
        m = _DummyMilestone('s1', 'S1')
        c.run_milestones([m])
        assert 's1' in c.state.completed

    def test_run_script_missing(self, tmp_path):
        c = ProleController(tmp_path)
        # Script doesn't exist but should not crash
        rc = c.run_script('nonexistent_script.sh', args=[])
        # Will fail since the script doesn't exist
        assert rc != 0 or rc is None


# ===== Milestone concrete subclasses (from core/milestones.py) =====

class TestDependenciesMilestone:
    def test_init(self):
        from installer.core.milestones import DependenciesMilestone
        m = DependenciesMilestone()
        assert m.id == 'dependencies'
        assert m.title == 'Dependency Verification'


class TestNetworkScanMilestone:
    def test_init(self):
        from installer.core.milestones import NetworkScanMilestone
        m = NetworkScanMilestone()
        assert m.id == 'network_scan'


class TestEnvSetupMilestone:
    def test_execute(self):
        from installer.core.milestones import EnvSetupMilestone
        m = EnvSetupMilestone()
        state = InstallerState(
            inputs={
                'env_setup.PROLE_HOME': '/opt/prole',
                'env_setup.PROLE_CONF': '/opt/prole/conf',
                'env_setup.NAMESPACE': 'testns',
            },
            config_data={},
        )
        msgs = []
        m.execute(state, progress=lambda msg, p: msgs.append(msg))
        assert state.config_data['System Environment']['PROLE_HOME'] == '/opt/prole'
        assert state.config_data['System Environment']['NAMESPACE'] == 'testns'
        assert 'Environment setup complete' in msgs


class TestSecretManagementMilestone:
    def test_execute_plain(self):
        from installer.core.milestones import SecretManagementMilestone
        m = SecretManagementMilestone()
        state = InstallerState(
            inputs={
                'init_password.db_password': 'plaintext123',
            },
        )
        msgs = []
        m.execute(state, progress=lambda msg, p: msgs.append(msg))
        assert state.inputs['init_password.db_password_confirm'] == 'plaintext123'

    def test_execute_no_passwords(self):
        from installer.core.milestones import SecretManagementMilestone
        m = SecretManagementMilestone()
        state = InstallerState(inputs={})
        m.execute(state)


class TestDatabaseCreationMilestone:
    def test_execute_generates_password(self):
        from installer.core.milestones import DatabaseCreationMilestone
        m = DatabaseCreationMilestone()
        state = InstallerState(
            inputs={'env_setup.NAMESPACE': 'testns'},
            config_data={},
        )
        m.execute(state)
        assert state.inputs.get('init_password.db_password')
        assert len(state.inputs['init_password.db_password']) >= 20
        assert state.config_data['Database Creation']['DB_NAME'] == 'testns'

    def test_execute_with_password(self):
        from installer.core.milestones import DatabaseCreationMilestone
        m = DatabaseCreationMilestone()
        state = InstallerState(
            inputs={
                'init_password.db_password': 'mypassword',
                'env_setup.NAMESPACE': 'ns1',
            },
            config_data={},
        )
        m.execute(state)
        assert state.inputs['init_password.db_password'] == 'mypassword'

    def test_execute_unresolvable_openbao(self):
        from installer.core.milestones import DatabaseCreationMilestone
        m = DatabaseCreationMilestone()
        state = InstallerState(
            inputs={
                'init_password.db_password': '${OPENBAO:kv/prole/ns/db#password}',
                'env_setup.NAMESPACE': 'ns1',
            },
            config_data={},
        )
        m.execute(state)
        pw = state.inputs['init_password.db_password']
        assert not pw.startswith('${')
        assert len(pw) >= 20


class TestDockerBuildMilestone:
    def test_disabled(self):
        from installer.core.milestones import DockerBuildMilestone
        m = DockerBuildMilestone()
        state = InstallerState(
            inputs={'init_db_build.run_build': 'False'},
            config_data={},
        )
        m.execute(state)  # Should not raise


class TestDeploymentMilestone:
    def test_init(self):
        from installer.core.milestones import DeploymentMilestone
        m = DeploymentMilestone()
        assert m.id == 'deployment'