import com.intellij.database.model.DasTable
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil

/*
 * Available context bindings:
 *   SELECTION   Iterable<DasObject>
 *   PROJECT     project
 *   FILES       files helper
 */

packageName = "com.sample;"
typeMapping 
 
= [
        (~/(?i)int/)                      : "long",
        (~/(?i)float|double|decimal|real/): "double",
        (~/(?i)datetime|timestamp/)       : "java.sql.Timestamp",
        (~/(?i)date/)                     : "java.sql.Date",
        (~/(?i)time/)                     : "java.sql.Time",
        (~/(?i)/)                         : "
 
String"
]

FILES.chooseDirectoryAndSave("Choose directory", "Choose where to store generated files") { dir ->
    SELECTION.filter { it instanceof DasTable }.each { generate(it, dir) }
}

def generate(table, dir) {
    def className = javaName(table.getName(), true)
    def fields = calcFields(table)
    
 
new File(dir, className + ".java").withPrintWriter { out -> generate(out, className, fields,table) }
}

def generate(out, className, fields,table) {
    //頭部
    out.println "package $packageName"
    out.println ""
    out.println ""
    out.println "import com.baomidou.mybatisplus.annotation.IdType;"
    out.println "import com.baomidou.mybatisplus.annotation.TableId;"
    out.println "import com.baomidou.mybatisplus.annotation.TableName;"
    out.println "import io.swagger.annotations.ApiModel;"
    out.println "import io.swagger.annotations.ApiModelProperty;"
    out.println "import lombok.Data;"
    out.println "import lombok.EqualsAndHashCode;"
    out.println ""
    out.println "@Data";
    out.println "@EqualsAndHashCode(callSuper = false)"
    out.println "@TableName(\"${table.getName()}\")";
    out.println "@ApiModel(value = \"${table.getComment()}\")"
    out.println "public class $className {"
    out.println ""
    out.println ""
    //欄位
    fields.each() {
        out.println "";
        // 輸出註釋
        if (isNotEmpty(it.commoent)) {
            out.println "\t/**"
            out.println "\t * ${it.commoent.toString()}"
            out.println "\t */"
        }
        if (it.annos != "") out.println "  ${it.annos}"
        out.println "  private ${it.type} ${it.name};"
    }
    out.println ""
    //get  set
    fields.each() {
        out.println ""
        out.println "  public ${it.type} get${it.name.capitalize()}() {"
        out.println "    return ${it.name};"
        out.println "  }"
        out.println ""
        out.println "  public void set${it.name.capitalize()}(${it.type} ${it.name}) {"
        out.println "    this.${it.name} = ${it.name};"
        out.println "  }"
        out.println ""
    }
    out.println "}"
}

def calcFields(table) {
    DasUtil.getColumns(table).reduce([]) { fields, col ->
        def spec = Case.LOWER.apply(col.getDataType().getSpecification())
        def typeStr = typeMapping.find { p, t -> p.matcher(spec).find() }.value
        fields += [[
                           sourceName: col.getName(),
                           name      : javaName(col.getName(), false),
                           type      : typeStr,
                           annos     : "@ApiModelProperty(value = \"${col.getComment()}\")",
                           commoent  : ""]]
    }
}

def isNotEmpty(content) {
    return content != null && content.toString().trim().length() > 0
}

def javaName(str, capitalize) {
    def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
            .collect { Case.LOWER.apply(it).capitalize() }
            .join("")
            .replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
    capitalize || s.length() == 1 ? s : Case.LOWER.apply(s[0]) + s[1..-1]
}