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package com.toomuchcoding.jsonassert;

import org.assertj.core.api.AbstractAssert;

import com.jayway.jsonpath.DocumentContext;

/**
 * A AssertJ version of JSON Assert.
 *
 * The methods used by JSON Assert are available as assertions of either
 * {@link DocumentContext} or {@link JsonVerifiable}.
 *
 * Remember that the order of execution matters since it's building the JSON Path
 * in the provided sequence.
 *
 * @author Marcin Grzejszczak
 *
 * @since 0.2.0
 */
public class JsonPathAssert extends AbstractAssert {

    public JsonPathAssert(DocumentContext actual) {
        super(JsonAssertion.assertThatJson(actual), JsonPathAssert.class);
    }

    public JsonPathAssert(JsonVerifiable actual) {
        super(actual, JsonPathAssert.class);
    }

    /**
     * @see JsonVerifiable#contains(Object)
     */
    public JsonPathAssert contains(Object value) {
        isNotNull();
        return new JsonPathAssert(actual.contains(value));
    }

    /**
     * @see JsonVerifiable#field(Object)
     */
    public JsonPathAssert field(Object value) {
        isNotNull();
        return new JsonPathAssert(actual.field(value));
    }

    /**
     * @see JsonVerifiable#field(String...)
     */
    public JsonPathAssert field(String... value) {
        isNotNull();
        return new JsonPathAssert(actual.field(value));
    }

    /**
     * @see JsonVerifiable#array()} (Object)
     */
    public JsonPathAssert array(Object value) {
        isNotNull();
        return new JsonPathAssert(actual.array(value));
    }

    /**
     * @see JsonVerifiable#arrayField()
     */
    public JsonPathAssert arrayField() {
        isNotNull();
        return new JsonPathAssert(actual.arrayField());
    }

    /**
     * @see JsonVerifiable#array()
     */
    public JsonPathAssert array() {
        isNotNull();
        return new JsonPathAssert(actual.array());
    }

    /**
     * @see JsonVerifiable#isEqualTo(String)
     */
    public JsonPathAssert isEqualTo(String value) {
        isNotNull();
        JsonVerifiable jsonVerifiable = null;
        try {
            jsonVerifiable = actual.isEqualTo(value);
        } catch (IllegalStateException e) {
            failWithMessage("Expected JSON to match JSON Path <%s> but it didn't", actual.jsonPath());
        }
        return new JsonPathAssert(jsonVerifiable);
    }

    /**
     * @see JsonVerifiable#isEqualTo(Number)
     */
    public JsonPathAssert isEqualTo(Number value) {
        isNotNull();
        JsonVerifiable jsonVerifiable = null;
        try {
            jsonVerifiable = actual.isEqualTo(value);
        } catch (IllegalStateException e) {
            failWithMessage("Expected JSON to match JSON Path <%s> but it didn't", actual.jsonPath());
        }
        return new JsonPathAssert(jsonVerifiable);
    }

    /**
     * @see JsonVerifiable#matches(String)
     */
    public JsonPathAssert matches(String value) {
        isNotNull();
        JsonVerifiable jsonVerifiable = null;
        try {
            jsonVerifiable = actual.matches(value);
        } catch (IllegalStateException e) {
            failWithMessage("Expected JSON to match JSON Path <%s> but it didn't", actual.jsonPath());
        }
        return new JsonPathAssert(jsonVerifiable);
    }

    /**
     * @see JsonVerifiable#isEqualTo(Boolean)
     */
    public JsonPathAssert isEqualTo(Boolean value) {
        isNotNull();
        JsonVerifiable jsonVerifiable = null;
        try {
            jsonVerifiable = actual.isEqualTo(value);
        } catch (IllegalStateException e) {
            failWithMessage("Expected JSON to match JSON Path <%s> but it didn't", actual.jsonPath());
        }
        return new JsonPathAssert(jsonVerifiable);
    }

    /**
     * @see JsonVerifiable#value()
     */
    public JsonPathAssert value() {
        isNotNull();
        JsonVerifiable jsonVerifiable = null;
        try {
            jsonVerifiable = actual.value();
        } catch (IllegalStateException e) {
            failWithMessage("Expected JSON to match JSON Path <%s> but it didn't", actual.jsonPath());
        }
        return new JsonPathAssert(jsonVerifiable);
    }

    /**
     * @see JsonVerifiable#isNull()
     */
    @Override
    public void isNull() {
        isNotNull();
        try {
            actual.isNull();
        } catch (IllegalStateException e) {
            failWithMessage("Expected JSON to match JSON Path <%s> but it didn't", actual.jsonPath());
        }
    }

    /**
     * @see JsonVerifiable#matchesJsonPath(String)
     */
    public JsonPathAssert matchesJsonPath(String jsonPath) {
        isNotNull();
        try {
            actual.matchesJsonPath(jsonPath);
        } catch (IllegalStateException e) {
            failWithMessage("Expected JSON to match JSON Path <%s> but it didn't", jsonPath);
        }
        return this;
    }

    /**
     * @see JsonVerifiable#isEmpty()
     */
    public JsonPathAssert isEmpty() {
        isNotNull();
        try {
            actual.isEmpty();
        } catch (IllegalStateException e) {
            failWithMessage("Expected JSON to with JSON Path <%s> to be empty", actual.jsonPath());
        }
        return this;
    }

}