"""Tests for validation module."""

import pytest
from pathlib import Path


class TestSchemaValidation:
    """Test cases for schema validation."""

    def test_load_empty_schema(self, temp_dir):
        """Test loading schema when no file exists."""
        from env_pro.core.validator import load_schema

        schema = load_schema(temp_dir)
        assert schema is None

    def test_load_schema(self, temp_dir):
        """Test loading a valid schema."""
        from env_pro.core.validator import load_schema, EnvSchema

        schema_file = temp_dir / ".env.schema.yaml"
        schema_file.write_text("""
variables:
  DATABASE_URL:
    type: url
    required: true
    description: Database connection URL
  DEBUG:
    type: bool
    default: false
""")

        schema = load_schema(temp_dir)
        assert schema is not None
        assert "DATABASE_URL" in schema.variables
        assert schema.variables["DATABASE_URL"].type == "url"
        assert schema.variables["DATABASE_URL"].required

    def test_validate_valid_string(self):
        """Test validation of valid string value."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="string")
        errors = validate_value("TEST_VAR", "some-value", schema)
        assert errors == []

    def test_validate_required_missing(self):
        """Test validation when required variable is missing."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="string", required=True)
        errors = validate_value("TEST_VAR", "", schema)
        assert len(errors) > 0
        assert "required" in errors[0].lower()

    def test_validate_int_type(self):
        """Test validation of integer type."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="int")
        errors = validate_value("PORT", "8080", schema)
        assert errors == []

        errors = validate_value("PORT", "not-a-number", schema)
        assert len(errors) > 0

    def test_validate_bool_type(self):
        """Test validation of boolean type."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="bool")
        errors = validate_value("DEBUG", "true", schema)
        assert errors == []

        errors = validate_value("DEBUG", "yes", schema)
        assert errors == []

    def test_validate_email_type(self):
        """Test validation of email type."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="email")
        errors = validate_value("EMAIL", "user@example.com", schema)
        assert errors == []

        errors = validate_value("EMAIL", "invalid-email", schema)
        assert len(errors) > 0

    def test_validate_url_type(self):
        """Test validation of URL type."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="url")
        errors = validate_value("API_URL", "https://api.example.com", schema)
        assert errors == []

        errors = validate_value("API_URL", "not-a-url", schema)
        assert len(errors) > 0

    def test_validate_pattern(self):
        """Test validation with regex pattern."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="string", pattern=r"^[A-Z]+$")
        errors = validate_value("PREFIX", "ABC123", schema)
        assert len(errors) > 0

        errors = validate_value("PREFIX", "ABC", schema)
        assert errors == []

    def test_validate_enum(self):
        """Test validation with enum values."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="string", enum=["dev", "staging", "prod"])
        errors = validate_value("ENV", "dev", schema)
        assert errors == []

        errors = validate_value("ENV", "invalid", schema)
        assert len(errors) > 0

    def test_validate_min_max_length(self):
        """Test validation with min/max length constraints."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="string", min_length=3, max_length=10)
        errors = validate_value("NAME", "ab", schema)
        assert len(errors) > 0

        errors = validate_value("NAME", "abcdefghijkl", schema)
        assert len(errors) > 0

        errors = validate_value("NAME", "valid", schema)
        assert errors == []

    def test_validate_min_max_number(self):
        """Test validation with min/max number constraints."""
        from env_pro.core.validator import validate_value, VariableSchema

        schema = VariableSchema(type="int", minimum=1, maximum=100)
        errors = validate_value("PORT", "0", schema)
        assert len(errors) > 0

        errors = validate_value("PORT", "101", schema)
        assert len(errors) > 0

        errors = validate_value("PORT", "50", schema)
        assert errors == []

    def test_validate_env_vars_full(self):
        """Test full environment validation."""
        from env_pro.core.validator import validate_env_vars, EnvSchema, VariableSchema

        schema = EnvSchema(variables={
            "DATABASE_URL": VariableSchema(type="string", required=True),
            "DEBUG": VariableSchema(type="bool", default="false")
        })

        vars_dict = {
            "DATABASE_URL": "postgresql://localhost:5432/db",
            "DEBUG": "true"
        }

        errors = validate_env_vars(vars_dict, schema)
        assert errors == []

    def test_check_required_vars(self):
        """Test checking for missing required variables."""
        from env_pro.core.validator import check_required_vars, EnvSchema, VariableSchema

        schema = EnvSchema(variables={
            "REQUIRED_VAR": VariableSchema(type="string", required=True),
            "OPTIONAL_VAR": VariableSchema(type="string", required=False)
        })

        vars_dict = {"OPTIONAL_VAR": "value"}
        missing = check_required_vars(vars_dict, schema)
        assert "REQUIRED_VAR" in missing

        vars_dict = {"REQUIRED_VAR": "value"}
        missing = check_required_vars(vars_dict, schema)
        assert len(missing) == 0