package ui

import (
	"fmt"

	"github.com/gdamore/tcell/v2"
	"github.com/rivo/tview"

	"git.warky.dev/wdevs/relspecgo/pkg/models"
)

// showColumnEditor shows editor for a specific column
func (se *SchemaEditor) showColumnEditor(schemaIndex, tableIndex, colIndex int, column *models.Column) {
	form := tview.NewForm()

	// Store original name to handle renames
	originalName := column.Name

	// Local variables to collect changes
	newName := column.Name
	newType := column.Type
	newIsPK := column.IsPrimaryKey
	newIsNotNull := column.NotNull
	newDefault := column.Default
	newDescription := column.Description

	// Column type options: PostgreSQL, MySQL, SQL Server, and common SQL types
	columnTypes := []string{
		// Numeric Types
		"SMALLINT", "INTEGER", "BIGINT", "INT", "TINYINT", "FLOAT", "REAL", "DOUBLE PRECISION",
		"DECIMAL(10,2)", "NUMERIC", "DECIMAL", "NUMERIC(10,2)",
		// Character Types
		"CHAR", "VARCHAR", "VARCHAR(255)", "TEXT", "NCHAR", "NVARCHAR", "NVARCHAR(255)",
		// Boolean
		"BOOLEAN", "BOOL", "BIT",
		// Date/Time Types
		"DATE", "TIME", "TIMESTAMP", "TIMESTAMP WITH TIME ZONE", "INTERVAL",
		"DATETIME", "DATETIME2", "DATEFIRST",
		// UUID and JSON
		"UUID", "GUID", "JSON", "JSONB",
		// Binary Types
		"BYTEA", "BLOB", "IMAGE", "VARBINARY", "VARBINARY(MAX)", "BINARY",
		// PostgreSQL Special Types
		"int4range", "int8range", "numrange", "tsrange", "tstzrange", "daterange",
		"HSTORE", "CITEXT", "INET", "MACADDR", "POINT", "LINE", "LSEG", "BOX", "PATH", "POLYGON", "CIRCLE",
		// Array Types
		"INTEGER ARRAY", "VARCHAR ARRAY", "TEXT ARRAY", "BIGINT ARRAY",
		// MySQL Specific
		"MEDIUMINT", "DOUBLE", "FLOAT(10,2)",
		// SQL Server Specific
		"MONEY", "SMALLMONEY", "SQL_VARIANT",
	}
	selectedTypeIndex := 0

	// Add existing type if not already in the list
	typeExists := false
	for i, opt := range columnTypes {
		if opt == column.Type {
			selectedTypeIndex = i
			typeExists = true
			break
		}
	}
	if !typeExists && column.Type != "" {
		columnTypes = append(columnTypes, column.Type)
		selectedTypeIndex = len(columnTypes) - 1
	}

	form.AddInputField("Column Name", column.Name, 40, nil, func(value string) {
		newName = value
	})

	form.AddDropDown("Type", columnTypes, selectedTypeIndex, func(option string, index int) {
		newType = option
	})

	form.AddCheckbox("Primary Key", column.IsPrimaryKey, func(checked bool) {
		newIsPK = checked
	})

	form.AddCheckbox("Not Null", column.NotNull, func(checked bool) {
		newIsNotNull = checked
	})

	defaultStr := ""
	if column.Default != nil {
		defaultStr = fmt.Sprintf("%v", column.Default)
	}
	form.AddInputField("Default Value", defaultStr, 40, nil, func(value string) {
		newDefault = value
	})

	form.AddTextArea("Description", column.Description, 40, 5, 0, func(value string) {
		newDescription = value
	})

	form.AddButton("Save", func() {
		// Apply changes using dataops
		se.UpdateColumn(schemaIndex, tableIndex, originalName, newName, newType, newIsPK, newIsNotNull, newDefault, newDescription)

		se.pages.RemovePage("column-editor")
		se.pages.SwitchToPage("table-editor")
	})

	form.AddButton("Delete", func() {
		se.showDeleteColumnConfirm(schemaIndex, tableIndex, originalName)
	})

	form.AddButton("Back", func() {
		// Discard changes - don't apply them
		se.pages.RemovePage("column-editor")
		se.pages.SwitchToPage("table-editor")
	})

	form.SetBorder(true).SetTitle(" Edit Column ").SetTitleAlign(tview.AlignLeft)
	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
		if event.Key() == tcell.KeyEscape {
			se.showExitConfirmation("column-editor", "table-editor")
			return nil
		}
		return event
	})

	se.pages.AddPage("column-editor", form, true, true)
}

// showNewColumnDialog shows dialog to create a new column
func (se *SchemaEditor) showNewColumnDialog(schemaIndex, tableIndex int) {
	form := tview.NewForm()

	columnName := ""
	dataType := "VARCHAR(255)"

	// Column type options: PostgreSQL, MySQL, SQL Server, and common SQL types
	columnTypes := []string{
		// Numeric Types
		"SMALLINT", "INTEGER", "BIGINT", "INT", "TINYINT", "FLOAT", "REAL", "DOUBLE PRECISION",
		"DECIMAL(10,2)", "NUMERIC", "DECIMAL", "NUMERIC(10,2)",
		// Character Types
		"CHAR", "VARCHAR", "VARCHAR(255)", "TEXT", "NCHAR", "NVARCHAR", "NVARCHAR(255)",
		// Boolean
		"BOOLEAN", "BOOL", "BIT",
		// Date/Time Types
		"DATE", "TIME", "TIMESTAMP", "TIMESTAMP WITH TIME ZONE", "INTERVAL",
		"DATETIME", "DATETIME2", "DATEFIRST",
		// UUID and JSON
		"UUID", "GUID", "JSON", "JSONB",
		// Binary Types
		"BYTEA", "BLOB", "IMAGE", "VARBINARY", "VARBINARY(MAX)", "BINARY",
		// PostgreSQL Special Types
		"int4range", "int8range", "numrange", "tsrange", "tstzrange", "daterange",
		"HSTORE", "CITEXT", "INET", "MACADDR", "POINT", "LINE", "LSEG", "BOX", "PATH", "POLYGON", "CIRCLE",
		// Array Types
		"INTEGER ARRAY", "VARCHAR ARRAY", "TEXT ARRAY", "BIGINT ARRAY",
		// MySQL Specific
		"MEDIUMINT", "DOUBLE", "FLOAT(10,2)",
		// SQL Server Specific
		"MONEY", "SMALLMONEY", "SQL_VARIANT",
	}
	selectedTypeIndex := 0

	form.AddInputField("Column Name", "", 40, nil, func(value string) {
		columnName = value
	})

	form.AddDropDown("Data Type", columnTypes, selectedTypeIndex, func(option string, index int) {
		dataType = option
	})

	form.AddCheckbox("Primary Key", false, nil)
	form.AddCheckbox("Not Null", false, nil)
	form.AddCheckbox("Unique", false, nil)

	form.AddButton("Save", func() {
		if columnName == "" {
			return
		}

		// Get form values
		isPK := form.GetFormItemByLabel("Primary Key").(*tview.Checkbox).IsChecked()
		isNotNull := form.GetFormItemByLabel("Not Null").(*tview.Checkbox).IsChecked()

		se.CreateColumn(schemaIndex, tableIndex, columnName, dataType, isPK, isNotNull)

		table := se.db.Schemas[schemaIndex].Tables[tableIndex]
		se.pages.RemovePage("new-column")
		se.pages.RemovePage("table-editor")
		se.showTableEditor(schemaIndex, tableIndex, table)
	})

	form.AddButton("Back", func() {
		table := se.db.Schemas[schemaIndex].Tables[tableIndex]
		se.pages.RemovePage("new-column")
		se.pages.RemovePage("table-editor")
		se.showTableEditor(schemaIndex, tableIndex, table)
	})

	form.SetBorder(true).SetTitle(" New Column ").SetTitleAlign(tview.AlignLeft)
	form.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
		if event.Key() == tcell.KeyEscape {
			se.showExitConfirmation("new-column", "table-editor")
			return nil
		}
		return event
	})

	se.pages.AddPage("new-column", form, true, true)
}