package solutions.bitbadger.documents.common.query

import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.DisplayName
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.assertThrows
import solutions.bitbadger.documents.common.*
import kotlin.test.assertEquals

/**
 * Unit tests for the `Where` object
 */
@DisplayName("Kotlin | Common | Query: Where")
class WhereTest {

    /**
     * Clear the connection string (resets Dialect)
     */
    @AfterEach
    fun cleanUp() {
        Configuration.dialectValue = null
    }

    @Test
    @DisplayName("byFields is blank when given no fields")
    fun byFieldsBlankIfEmpty() =
        assertEquals("", Where.byFields(listOf()))

    @Test
    @DisplayName("byFields generates one numeric field (PostgreSQL)")
    fun byFieldsOneFieldPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals("(data->>'it')::numeric = :that", Where.byFields(listOf(Field.equal("it", 9, ":that"))))
    }

    @Test
    @DisplayName("byFields generates one alphanumeric field (PostgreSQL)")
    fun byFieldsOneAlphaFieldPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals("data->>'it' = :that", Where.byFields(listOf(Field.equal("it", "", ":that"))))
    }

    @Test
    @DisplayName("byFields generates one field (SQLite)")
    fun byFieldsOneFieldSQLite() {
        Configuration.dialectValue = Dialect.SQLITE
        assertEquals("data->>'it' = :that", Where.byFields(listOf(Field.equal("it", "", ":that"))))
    }

    @Test
    @DisplayName("byFields generates multiple fields w/ default match (PostgreSQL)")
    fun byFieldsMultipleDefaultPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals(
            "data->>'1' = :one AND (data->>'2')::numeric = :two AND data->>'3' = :three",
            Where.byFields(
                listOf(Field.equal("1", "", ":one"), Field.equal("2", 0L, ":two"), Field.equal("3", "", ":three"))
            )
        )
    }

    @Test
    @DisplayName("byFields generates multiple fields w/ default match (SQLite)")
    fun byFieldsMultipleDefaultSQLite() {
        Configuration.dialectValue = Dialect.SQLITE
        assertEquals(
            "data->>'1' = :one AND data->>'2' = :two AND data->>'3' = :three",
            Where.byFields(
                listOf(Field.equal("1", "", ":one"), Field.equal("2", 0L, ":two"), Field.equal("3", "", ":three"))
            )
        )
    }

    @Test
    @DisplayName("byFields generates multiple fields w/ ANY match (PostgreSQL)")
    fun byFieldsMultipleAnyPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals(
            "data->>'1' = :one OR (data->>'2')::numeric = :two OR data->>'3' = :three",
            Where.byFields(
                listOf(Field.equal("1", "", ":one"), Field.equal("2", 0L, ":two"), Field.equal("3", "", ":three")),
                FieldMatch.ANY
            )
        )
    }

    @Test
    @DisplayName("byFields generates multiple fields w/ ANY match (SQLite)")
    fun byFieldsMultipleAnySQLite() {
        Configuration.dialectValue = Dialect.SQLITE
        assertEquals(
            "data->>'1' = :one OR data->>'2' = :two OR data->>'3' = :three",
            Where.byFields(
                listOf(Field.equal("1", "", ":one"), Field.equal("2", 0L, ":two"), Field.equal("3", "", ":three")),
                FieldMatch.ANY
            )
        )
    }

    @Test
    @DisplayName("byId generates defaults for alphanumeric key (PostgreSQL)")
    fun byIdDefaultAlphaPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals("data->>'id' = :id", Where.byId(docId = ""))
    }

    @Test
    @DisplayName("byId generates defaults for numeric key (PostgreSQL)")
    fun byIdDefaultNumericPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals("(data->>'id')::numeric = :id", Where.byId(docId = 5))
    }

    @Test
    @DisplayName("byId generates defaults (SQLite)")
    fun byIdDefaultSQLite() {
        Configuration.dialectValue = Dialect.SQLITE
        assertEquals("data->>'id' = :id", Where.byId(docId = ""))
    }

    @Test
    @DisplayName("byId generates named ID (PostgreSQL)")
    fun byIdDefaultNamedPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals("data->>'id' = :key", Where.byId<String>(":key"))
    }

    @Test
    @DisplayName("byId generates named ID (SQLite)")
    fun byIdDefaultNamedSQLite() {
        Configuration.dialectValue = Dialect.SQLITE
        assertEquals("data->>'id' = :key", Where.byId<String>(":key"))
    }

    @Test
    @DisplayName("jsonContains generates defaults (PostgreSQL)")
    fun jsonContainsDefaultPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals("data @> :criteria", Where.jsonContains())
    }

    @Test
    @DisplayName("jsonContains generates named parameter (PostgreSQL)")
    fun jsonContainsNamedPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals("data @> :it", Where.jsonContains(":it"))
    }

    @Test
    @DisplayName("jsonContains fails (SQLite)")
    fun jsonContainsFailsSQLite() {
        Configuration.dialectValue = Dialect.SQLITE
        assertThrows<DocumentException> { Where.jsonContains() }
    }

    @Test
    @DisplayName("jsonPathMatches generates defaults (PostgreSQL)")
    fun jsonPathMatchDefaultPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals("jsonb_path_exists(data, :path::jsonpath)", Where.jsonPathMatches())
    }

    @Test
    @DisplayName("jsonPathMatches generates named parameter (PostgreSQL)")
    fun jsonPathMatchNamedPostgres() {
        Configuration.dialectValue = Dialect.POSTGRESQL
        assertEquals("jsonb_path_exists(data, :jp::jsonpath)", Where.jsonPathMatches(":jp"))
    }

    @Test
    @DisplayName("jsonPathMatches fails (SQLite)")
    fun jsonPathFailsSQLite() {
        Configuration.dialectValue = Dialect.SQLITE
        assertThrows<DocumentException> { Where.jsonPathMatches() }
    }
}