package main

/*
   This file is part of taler-dashboard
   Copyright (C) 2023 Özgür Kesim

   taler-dashboard is free software; you can redistribute it and/or modify it
   under the terms of the GNU Affero General Public License as published by the
   Free Software Foundation; either version 3, or (at your option) any later
   version.

   taler-dashboard is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public
   License for more details.

   You can receive a copy of the GNU Affero General Public License from
   <http://www.gnu.org/licenses/>

   @author Özgür Kesim <oec-taler@kesim.org>
*/

import (
	"sort"
	"strings"
	"time"
)

type Issues []Issue

type Issue struct {
	Id              uint32
	Summary         string
	Description     string
	Project         KeyVal
	Category        KeyVal
	TargetVersion   KeyVal `json:"target_version"`
	Reporter        KeyVal
	handler         KeyVal
	Status          KeyVal
	Resolution      KeyVal
	ViewState       KeyVal `json:"view_state"`
	Priority        KeyVal
	Severity        KeyVal
	Reproducibility KeyVal
	Sticky          bool
	CreatedAt       time.Time `json:"created_at"`
	UpdatedAt       time.Time `json:"updated_at"`
	Notes           []Note
	Relationships   []Relationship
	Tags            []KeyVal
	History         []Change
}

type KeyVal struct {
	Id    uint32
	Name  string
	Label string `json:",omitempty"`
	Color string `json:",omitempty"`
}

type Note struct {
	Id          uint32
	Text        string
	Reporter    KeyVal
	ViewState   KeyVal `json:"view_state"`
	Attachments []Attachment
	Typ         string    `json:"type"`
	CreatedAt   time.Time `json:"created_at"`
	UpdatedAt   time.Time `json:"created_at"`
}

type Attachment struct {
	Name    string
	Content []byte
}

type Relationship struct {
	Id    uint32
	Typ   KeyVal `json:"type"`
	Issue struct {
		Id         uint32
		Summary    string
		Status     KeyVal
		Resolution KeyVal
		Handler    KeyVal
	}
}

type Change struct {
	CreatedAt time.Time `json:"created_at"`
	Message   string
	User      KeyVal
	Typ       KeyVal `json:"type"`
	Note      struct{ id int32 }
}

type ByCategory []Issue

func (b ByCategory) Len() int { return len(b) }
func (b ByCategory) Less(i, j int) bool {
	return strings.Compare(b[i].Category.Name, b[j].Category.Name) < 0
}
func (b ByCategory) Swap(i, j int) { b[i], b[j] = b[j], b[i] }

type ById []Issue

func (b ById) Len() int           { return len(b) }
func (b ById) Less(i, j int) bool { return b[i].Id < b[j].Id }
func (b ById) Swap(i, j int)      { b[i], b[j] = b[j], b[i] }

type ByTarget []Issue

func (b ByTarget) Len() int { return len(b) }
func (b ByTarget) Less(i, j int) bool {
	return strings.Compare(b[i].TargetVersion.Name, b[j].TargetVersion.Name) < 0
}
func (b ByTarget) Swap(i, j int) { b[i], b[j] = b[j], b[i] }

func (i Issues) Tags() (tags []string) {
	var m = map[string]bool{}
	for _, issue := range i {
		for _, tag := range issue.Tags {
			m[tag.Name] = true
		}
	}
	for tag := range m {
		tags = append(tags, tag)
	}
	sort.Strings(tags)
	return
}

func (i Issues) TargetVersions() (targets []string) {
	var m = map[string]bool{}
	for _, issue := range i {
		m[issue.TargetVersion.Name] = true
	}
	for t := range m {
		targets = append(targets, t)
	}
	sort.Strings(targets)
	return
}

func (i Issues) Categories() []string {
	var m = map[string]bool{}

	for _, issue := range i {
		m[issue.Category.Name] = true
	}

	var r = []string{}
	for c := range m {
		r = append(r, c)
	}
	sort.Strings(r)
	return r
}

func (i Issues) ByCategory(cat string) (issues Issues) {
	for _, issue := range i {
		if issue.Category.Name == cat {
			issues = append(issues, issue)
		}
	}
	sort.Sort(ById(issues))
	return issues
}

func (i Issues) ByCategoryAndTarget(cat, tar string) (issues Issues) {
	for _, is := range i {
		if is.TargetVersion.Name == tar &&
			is.Category.Name == cat {
			issues = append(issues, is)
		}
	}
	sort.Sort(ById(issues))
	return
}