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// Copyright (c) 2022 Tulir Asokan
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package mautrix
import (
"fmt"
"regexp"
"strconv"
)
// RespVersions is the JSON response for https://spec.matrix.org/v1.2/client-server-api/#get_matrixclientversions
type RespVersions struct {
Versions []SpecVersion `json:"versions"`
UnstableFeatures map[string]bool `json:"unstable_features"`
}
func (versions *RespVersions) ContainsFunc(match func(found SpecVersion) bool) bool {
for _, found := range versions.Versions {
if match(found) {
return true
}
}
return false
}
func (versions *RespVersions) Contains(version SpecVersion) bool {
return versions.ContainsFunc(func(found SpecVersion) bool {
return found == version
})
}
func (versions *RespVersions) ContainsGreaterOrEqual(version SpecVersion) bool {
return versions.ContainsFunc(func(found SpecVersion) bool {
return found.GreaterThan(version) || found == version
})
}
func (versions *RespVersions) GetLatest() (latest SpecVersion) {
for _, ver := range versions.Versions {
if ver.GreaterThan(latest) {
latest = ver
}
}
return
}
type SpecVersionFormat int
const (
SpecVersionFormatUnknown SpecVersionFormat = iota
SpecVersionFormatR
SpecVersionFormatV
)
var (
SpecR000 = MustParseSpecVersion("r0.0.0")
SpecR001 = MustParseSpecVersion("r0.0.1")
SpecR010 = MustParseSpecVersion("r0.1.0")
SpecR020 = MustParseSpecVersion("r0.2.0")
SpecR030 = MustParseSpecVersion("r0.3.0")
SpecR040 = MustParseSpecVersion("r0.4.0")
SpecR050 = MustParseSpecVersion("r0.5.0")
SpecR060 = MustParseSpecVersion("r0.6.0")
SpecR061 = MustParseSpecVersion("r0.6.1")
SpecV11 = MustParseSpecVersion("v1.1")
SpecV12 = MustParseSpecVersion("v1.2")
SpecV13 = MustParseSpecVersion("v1.3")
SpecV14 = MustParseSpecVersion("v1.4")
SpecV15 = MustParseSpecVersion("v1.5")
)
func (svf SpecVersionFormat) String() string {
switch svf {
case SpecVersionFormatR:
return "r"
case SpecVersionFormatV:
return "v"
default:
return ""
}
}
type SpecVersion struct {
Format SpecVersionFormat
Major int
Minor int
Patch int
Raw string
}
var legacyVersionRegex = regexp.MustCompile(`^r(\d+)\.(\d+)\.(\d+)$`)
var modernVersionRegex = regexp.MustCompile(`^v(\d+)\.(\d+)$`)
func MustParseSpecVersion(version string) SpecVersion {
sv, err := ParseSpecVersion(version)
if err != nil {
panic(err)
}
return sv
}
func ParseSpecVersion(version string) (sv SpecVersion, err error) {
sv.Raw = version
if parts := modernVersionRegex.FindStringSubmatch(version); parts != nil {
sv.Major, _ = strconv.Atoi(parts[1])
sv.Minor, _ = strconv.Atoi(parts[2])
sv.Format = SpecVersionFormatV
} else if parts = legacyVersionRegex.FindStringSubmatch(version); parts != nil {
sv.Major, _ = strconv.Atoi(parts[1])
sv.Minor, _ = strconv.Atoi(parts[2])
sv.Patch, _ = strconv.Atoi(parts[3])
sv.Format = SpecVersionFormatR
} else {
err = fmt.Errorf("version '%s' doesn't match either known syntax", version)
}
return
}
func (sv *SpecVersion) UnmarshalText(version []byte) error {
*sv, _ = ParseSpecVersion(string(version))
return nil
}
func (sv *SpecVersion) MarshalText() ([]byte, error) {
return []byte(sv.String()), nil
}
func (sv SpecVersion) String() string {
switch sv.Format {
case SpecVersionFormatR:
return fmt.Sprintf("r%d.%d.%d", sv.Major, sv.Minor, sv.Patch)
case SpecVersionFormatV:
return fmt.Sprintf("v%d.%d", sv.Major, sv.Minor)
default:
return sv.Raw
}
}
func (sv SpecVersion) LessThan(other SpecVersion) bool {
return sv != other && !sv.GreaterThan(other)
}
func (sv SpecVersion) GreaterThan(other SpecVersion) bool {
return sv.Format > other.Format ||
(sv.Format == other.Format && sv.Major > other.Major) ||
(sv.Format == other.Format && sv.Major == other.Major && sv.Minor > other.Minor) ||
(sv.Format == other.Format && sv.Major == other.Major && sv.Minor == other.Minor && sv.Patch > other.Patch)
}
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