package result

import (
	"cpone-dashboard/db"
	"strings"
)

type ResultRow struct {
	NIP        string
	Name       string
	Posisi     string
	PacketCode string
	PacketName string
	Tests      string
	FileUrl    string
	ReportDate string
}

type ResultSummary struct {
	Total  int
	HasPDF int
}

func GetResultRows(mcuID int) ([]ResultRow, error) {
	rows, err := db.DB.Query(`
		SELECT
		  COALESCE(NULLIF(TRIM(mp.Mcu_PatientNIP), ''), '-')  AS nip,
		  COALESCE(NULLIF(TRIM(mp.Mcu_PatientName), ''), '-') AS name,
		  COALESCE(
		      NULLIF(TRIM(mp.Mcu_PatientDepartment), ''),
		      NULLIF(TRIM(mp.Mcu_PatientDivision), ''),
		      NULLIF(TRIM(mp.Mcu_PatientPosisi), ''),
		      '-'
		  )                                                    AS posisi,
		  COALESCE((
		      SELECT GROUP_CONCAT(DISTINCT COALESCE(NULLIF(TRIM(pp.Mcu_PatientPacketCode), ''), pp.Mcu_PatientPacketName) ORDER BY COALESCE(NULLIF(TRIM(pp.Mcu_PatientPacketCode), ''), pp.Mcu_PatientPacketName) SEPARATOR ',')
		      FROM mcu_patient_packet pp
		      WHERE pp.Mcu_PatientPacketPreregisterID = mp.Mcu_PatientPreregisterID
		  ), '')                                               AS packet_code,
		  COALESCE((
		      SELECT GROUP_CONCAT(DISTINCT pp.Mcu_PatientPacketName ORDER BY pp.Mcu_PatientPacketName SEPARATOR ', ')
		      FROM mcu_patient_packet pp
		      WHERE pp.Mcu_PatientPacketPreregisterID = mp.Mcu_PatientPreregisterID
		  ), '')                                               AS packet_name,
		  COALESCE(NULLIF(TRIM(mp.Mcu_PatientPemeriksaan), ''), '') AS tests,
		  COALESCE(p.Published_McuDasboardFileUrl, '')         AS file_url,
		  CASE
		    WHEN p.Published_McuDasboardFileUrl IS NOT NULL
		     AND p.Published_McuDasboardFileUrl != ''
		    THEN COALESCE(CAST(p.Published_McuDasboardLastUpdated AS CHAR), '')
		    ELSE ''
		  END                                                  AS report_date
		FROM mcu_patient mp
		LEFT JOIN published_mcu_dashboard_sync p
		  ON p.Published_McuDasboardT_OrderHeaderID = mp.Mcu_PatientOrderID
		WHERE mp.Mcu_PatientMcuID = ?
		  AND mp.Mcu_PatientIsActive = 'Y'
		ORDER BY
		  (p.Published_McuDasboardFileUrl IS NOT NULL AND p.Published_McuDasboardFileUrl != '') DESC,
		  mp.Mcu_PatientName ASC
	`, mcuID)
	if err != nil {
		return nil, err
	}
	defer rows.Close()

	var result []ResultRow
	for rows.Next() {
		var r ResultRow
		if err := rows.Scan(&r.NIP, &r.Name, &r.Posisi, &r.PacketCode, &r.PacketName, &r.Tests, &r.FileUrl, &r.ReportDate); err != nil {
			continue
		}
		result = append(result, r)
	}
	return result, rows.Err()
}

func BuildResultSummary(rows []ResultRow) ResultSummary {
	s := ResultSummary{Total: len(rows)}
	for _, r := range rows {
		if r.FileUrl != "" {
			s.HasPDF++
		}
	}
	return s
}

func FilterResultRows(rows []ResultRow, search, filter, packetCode string) []ResultRow {
	search = strings.ToLower(strings.TrimSpace(search))
	filter = strings.TrimSpace(filter)
	packetCode = strings.TrimSpace(packetCode)
	if search == "" && filter == "" && packetCode == "" {
		return rows
	}
	out := make([]ResultRow, 0, len(rows))
	for _, r := range rows {
		if packetCode != "" && r.PacketCode != packetCode {
			continue
		}
		switch filter {
		case "has_pdf":
			if r.FileUrl == "" {
				continue
			}
		case "no_pdf":
			if r.FileUrl != "" {
				continue
			}
		}
		if search != "" {
			hay := strings.ToLower(r.Name + " " + r.NIP + " " + r.Posisi + " " + r.PacketCode + " " + r.PacketName + " " + r.Tests)
			if !strings.Contains(hay, search) {
				continue
			}
		}
		out = append(out, r)
	}
	return out
}

type PacketOption struct {
	Code string
	Name string
}

func UniquePackets(rows []ResultRow) []PacketOption {
	seen := map[string]struct{}{}
	out := []PacketOption{}
	for _, r := range rows {
		code := strings.TrimSpace(r.PacketCode)
		if code == "" {
			continue
		}
		if _, ok := seen[code]; ok {
			continue
		}
		seen[code] = struct{}{}
		name := strings.TrimSpace(r.PacketName)
		if name == "" {
			name = code
		}
		out = append(out, PacketOption{Code: code, Name: name})
	}
	for i := 0; i < len(out); i++ {
		for j := i + 1; j < len(out); j++ {
			if out[j].Code < out[i].Code {
				out[i], out[j] = out[j], out[i]
			}
		}
	}
	return out
}

func PaginateResultRows(rows []ResultRow, page, pageSize int) ([]ResultRow, bool) {
	if page < 1 {
		page = 1
	}
	if pageSize < 1 {
		pageSize = 30
	}
	start := (page - 1) * pageSize
	if start >= len(rows) {
		return []ResultRow{}, false
	}
	end := start + pageSize
	if end > len(rows) {
		end = len(rows)
	}
	return rows[start:end], end < len(rows)
}