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/**
* Configuration Loading
*
* Loads config from (in order of precedence):
* 1. CLI arguments (highest)
* 2. Environment variables (JSS_*)
* 3. Config file (config.json)
* 4. Defaults (lowest)
*/
import
fs
from
'fs-extra'
;
import
path
from
'path'
;
/**
* Default configuration values
*/
export
const
defaults
=
{
// Server
port
:
3000
,
host
:
'0.0.0.0'
,
root
:
'./data'
,
// SSL
sslKey
:
null
,
sslCert
:
null
,
// Features
multiuser
:
true
,
conneg
:
false
,
notifications
:
false
,
// Identity Provider
idp
:
false
,
idpIssuer
:
null
,
// Subdomain mode (XSS protection)
subdomains
:
false
,
baseDomain
:
null
,
// Mashlib data browser
mashlib
:
false
,
mashlibCdn
:
false
,
mashlibVersion
:
'2.0.0'
,
// Logging
logger
:
true
,
quiet
:
false
,
// Paths
configPath
:
'./.jss'
,
}
;
/**
* Map of environment variable names to config keys
*/
const
envMap
=
{
JSS_PORT
:
'port'
,
JSS_HOST
:
'host'
,
JSS_ROOT
:
'root'
,
JSS_SSL_KEY
:
'sslKey'
,
JSS_SSL_CERT
:
'sslCert'
,
JSS_MULTIUSER
:
'multiuser'
,
JSS_CONNEG
:
'conneg'
,
JSS_NOTIFICATIONS
:
'notifications'
,
JSS_QUIET
:
'quiet'
,
JSS_CONFIG_PATH
:
'configPath'
,
JSS_IDP
:
'idp'
,
JSS_IDP_ISSUER
:
'idpIssuer'
,
JSS_SUBDOMAINS
:
'subdomains'
,
JSS_BASE_DOMAIN
:
'baseDomain'
,
JSS_MASHLIB
:
'mashlib'
,
JSS_MASHLIB_CDN
:
'mashlibCdn'
,
JSS_MASHLIB_VERSION
:
'mashlibVersion'
,
}
;
/**
* Parse a value from environment variable string
*/
function
parseEnvValue
(
value
,
key
)
{
if
(
value
===
undefined
)
return
undefined
;
// Boolean values
if
(
value
.
toLowerCase
(
)
===
'true'
)
return
true
;
if
(
value
.
toLowerCase
(
)
===
'false'
)
return
false
;
// Numeric values for known numeric keys
if
(
key
===
'port'
&&
!
isNaN
(
value
)
)
{
return
parseInt
(
value
,
10
)
;
}
return
value
;
}
/**
* Load configuration from environment variables
*/
function
loadEnvConfig
(
)
{
const
config
=
{
}
;
for
(
const
[
envVar
,
configKey
]
of
Object
.
entries
(
envMap
)
)
{
const
value
=
process
.
env
[
envVar
]
;
if
(
value
!==
undefined
)
{
config
[
configKey
]
=
parseEnvValue
(
value
,
configKey
)
;
}
}
return
config
;
}
/**
* Load configuration from a JSON file
*/
async
function
loadFileConfig
(
configFile
)
{
if
(
!
configFile
)
return
{
}
;
try
{
const
fullPath
=
path
.
resolve
(
configFile
)
;
if
(
await
fs
.
pathExists
(
fullPath
)
)
{
const
content
=
await
fs
.
readFile
(
fullPath
,
'utf8'
)
;
return
JSON
.
parse
(
content
)
;
}
}
catch
(
e
)
{
console
.
error
(
`Warning: Failed to load config file:
${
e
.
message
}
`
)
;
}
return
{
}
;
}
/**
* Merge configuration sources
*
@param
{
object
} cliOptions - Options from command line
*
@param
{
string
} configFile - Path to config file (optional)
*
@returns
{
Promise<object>
} Merged configuration
*/
export
async
function
loadConfig
(
cliOptions
=
{
}
,
configFile
=
null
)
{
// Load from file first
const
fileConfig
=
await
loadFileConfig
(
configFile
||
cliOptions
.
config
)
;
// Load from environment
const
envConfig
=
loadEnvConfig
(
)
;
// Merge in order: defaults < file < env < cli
const
config
=
{
...
defaults
,
...
fileConfig
,
...
envConfig
,
...
filterUndefined
(
cliOptions
)
,
}
;
// Derive additional settings
if
(
config
.
quiet
)
{
config
.
logger
=
false
;
}
// Validate SSL config
if
(
(
config
.
sslKey
&&
!
config
.
sslCert
)
||
(
!
config
.
sslKey
&&
config
.
sslCert
)
)
{
throw
new
Error
(
'Both --ssl-key and --ssl-cert must be provided together'
)
;
}
config
.
ssl
=
!
!
(
config
.
sslKey
&&
config
.
sslCert
)
;
return
config
;
}
/**
* Filter out undefined values from an object
*/
function
filterUndefined
(
obj
)
{
const
result
=
{
}
;
for
(
const
[
key
,
value
]
of
Object
.
entries
(
obj
)
)
{
if
(
value
!==
undefined
)
{
result
[
key
]
=
value
;
}
}
return
result
;
}
/**
* Save configuration to a file
*/
export
async
function
saveConfig
(
config
,
configFile
)
{
const
toSave
=
{
...
config
}
;
// Remove derived/runtime values
delete
toSave
.
ssl
;
delete
toSave
.
logger
;
await
fs
.
ensureDir
(
path
.
dirname
(
configFile
)
)
;
await
fs
.
writeFile
(
configFile
,
JSON
.
stringify
(
toSave
,
null
,
2
)
)
;
}
/**
* Print configuration (for debugging)
*/
export
function
printConfig
(
config
)
{
console
.
log
(
'\nConfiguration:'
)
;
console
.
log
(
'─'
.
repeat
(
40
)
)
;
console
.
log
(
` Port:
${
config
.
port
}
`
)
;
console
.
log
(
` Host:
${
config
.
host
}
`
)
;
console
.
log
(
` Root:
${
path
.
resolve
(
config
.
root
)
}
`
)
;
console
.
log
(
` SSL:
${
config
.
ssl
?
'enabled'
:
'disabled'
}
`
)
;
console
.
log
(
` Multi-user:
${
config
.
multiuser
}
`
)
;
console
.
log
(
` Conneg:
${
config
.
conneg
}
`
)
;
console
.
log
(
` Notifications:
${
config
.
notifications
}
`
)
;
console
.
log
(
` IdP:
${
config
.
idp
?
(
config
.
idpIssuer
||
'enabled'
)
:
'disabled'
}
`
)
;
console
.
log
(
` Subdomains:
${
config
.
subdomains
?
(
config
.
baseDomain
||
'enabled'
)
:
'disabled'
}
`
)
;
console
.
log
(
` Mashlib:
${
config
.
mashlibCdn
?
`CDN v
${
config
.
mashlibVersion
}
`
:
config
.
mashlib
?
'local'
:
'disabled'
}
`
)
;
console
.
log
(
'─'
.
repeat
(
40
)
)
;
}
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