add filters

src/main/kotlin/com/restapi/controllers/Filters.kt

@@ -0,0 +1,138 @@
+package com.restapi.controllers
+
+import com.restapi.domain.DocType
+import com.restapi.domain.PurchaseOrder
+import com.restapi.domain.Quotation
+import com.restapi.domain.ReqForQuote
+import com.restapi.domain.UOM
+import java.time.LocalDate
+import com.restapi.domain.Session.database
+
+//constants
+const val IGNORE = "%"
+val baseDate :LocalDate = LocalDate.MIN
+val maxDate :LocalDate = LocalDate.MAX
+const val RATING_MAX = 10.0
+const val RATING_MIN = 0.0
+//common filters would be used by most of the handlers
+//require a list of vendor ids to be passed
+data class CommonFilters (
+    val fromDate :LocalDate = baseDate,
+    val toDate :LocalDate = maxDate,
+    val vendor :List<Long>? = null,
+    val sortAsc :Boolean = true,
+    val sortBy :String = IGNORE
+)
+data class POFilters (
+    val poNumLike :String = IGNORE,
+    val totalAmountExceeds :Long = Long.MIN_VALUE,
+    val totalAmountLessThan :Long = Long.MAX_VALUE,
+    val validAfter: LocalDate = baseDate,
+    val validBefore: LocalDate = maxDate,
+    val refQuotation :String = IGNORE,
+)
+data class ProductFilters (
+    val nameLike :String = IGNORE,
+    val hsnLike :String = IGNORE,
+    val uom :UOM = UOM.ALL,
+)
+data class DocumentFilters (
+    val nameLike :String = IGNORE,
+    val typeOfDoc :DocType = DocType.ALL,
+)
+data class RFQFilters (
+    val validBefore :LocalDate = maxDate,
+    val validAfter :LocalDate = baseDate,
+    val reqForQuoteNumLike :String = IGNORE,
+)
+data class QuoteFilters (
+    val quoteNumLike :String = IGNORE,
+    val validBefore :LocalDate = baseDate,
+    val validAfter :LocalDate = maxDate,
+    val totalAmountExceeds :Long = Long.MIN_VALUE,
+    val totalAmountLessThan :Long = Long.MAX_VALUE,
+)
+data class VendorFilters (
+    val nameLike :String = IGNORE,
+    val msmeLike :String = IGNORE,
+    val gstNumLike :String = IGNORE,
+    val addressLike :String = IGNORE,
+    val ratingExceeds :Double = RATING_MIN,
+    val ratingLessThan :Double = RATING_MAX,
+)
+fun<T> applyVendorHelper(q :io.ebean.ExpressionList<T>, vids :List<Long>?) {
+    if (vids.isNullOrEmpty()) return
+    q.apply {
+        q.`in`("vendor", vids)
+    }
+}
+fun<T> applySortHelper(q :io.ebean.ExpressionList<T>, sortBy :String, asc :Boolean) {
+    if(sortBy == IGNORE) return;
+    val order = if (asc) "ASC" else "DESC"
+    q.orderBy("$sortBy $order")
+}
+fun<T> applyCommonFilters(q :io.ebean.ExpressionList<T>, commonFilters: CommonFilters) {
+    applyVendorHelper<T>(q, commonFilters.vendor)
+    applySortHelper<T>(q, commonFilters.sortBy, commonFilters.sortAsc)
+}
+fun searchQuotes(commonFilters: CommonFilters, quoteFilters: QuoteFilters) : List<Quotation> {
+    val q = database.find(Quotation::class.java)
+        .where()
+        .between("quoteDate", commonFilters.fromDate, commonFilters.toDate)
+        .ilike("quoteNum", quoteFilters.quoteNumLike )
+        .ge("validTill",quoteFilters.validAfter)
+        .le("validTill", quoteFilters.validBefore)
+        .le("totalAmount", quoteFilters.totalAmountLessThan)
+        .ge("totalAmount", quoteFilters.totalAmountExceeds)
+        .apply {
+            if(!commonFilters.vendor?.isEmpty()!!){
+                commonFilters.vendor.let { this.`in`("vendor", it) }
+            }
+        }
+    applySortHelper(q, commonFilters.sortBy, commonFilters.sortAsc)
+    return q.findList()
+}
+fun searchVendors(commonFilters: CommonFilters, vendorFilters: VendorFilters) : List<Vendor> {
+    val q = database.find(Vendor::class.java)
+        .where()
+        .ge("rating", vendorFilters.ratingExceeds)
+        .le("rating", vendorFilters.ratingLessThan)
+        .ilike("name", vendorFilters.nameLike)
+        .ilike("msme", vendorFilters.msmeLike)
+        .ilike("gstNum", vendorFilters.gstNumLike)
+        .ilike("address", vendorFilters.addressLike)
+    applySortHelper(q, commonFilters.sortBy, commonFilters.sortAsc)
+    return q.findList()
+}
+fun searchDocs(commonFilters: CommonFilters, documentFilters: DocumentFilters) : List<Document> {
+    val q = database.find(Document::class.java)
+        .where()
+        .apply {
+            if(documentFilters.typeOfDoc != DocType.ALL){
+                this.eq("docType", documentFilters.typeOfDoc)
+            }
+        }
+        .ilike("name", documentFilters.nameLike )
+    applySortHelper(q, commonFilters.sortBy, commonFilters.sortAsc)
+    return q.findList()
+}
+fun searchPos(commonFilters: CommonFilters, poFilters: POFilters) : List<PurchaseOrder> {
+    val q = database.find(PurchaseOrder::class.java)
+        .where()
+        .between("totalAmount", poFilters.totalAmountExceeds, poFilters.totalAmountLessThan)
+        .between("validTill", poFilters.validAfter, poFilters.validBefore)
+        .ilike("poNum", poFilters.poNumLike )
+        .ilike("referenceQuotation", poFilters.refQuotation )
+    applyVendorHelper(q, commonFilters.vendor)
+    applySortHelper(q, commonFilters.sortBy, commonFilters.sortAsc)
+    return q.findList()
+}
+fun searchRFQ(commonFilters: CommonFilters, rfqFilters: RFQFilters) : List<ReqForQuote> {
+    val q = database.find(ReqForQuote::class.java)
+        .where()
+        .between("validTill", rfqFilters.validAfter, rfqFilters.validBefore)
+        .ilike("reqForQuoteNum", rfqFilters.reqForQuoteNumLike)
+    applyVendorHelper(q, commonFilters.vendor)
+    applySortHelper(q, commonFilters.sortBy, commonFilters.sortAsc)
+    return q.findList()
+}