goext/ginext/preContext.go

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package ginext
import (
"context"
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"fmt"
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"github.com/gin-gonic/gin"
"github.com/gin-gonic/gin/binding"
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"gogs.mikescher.com/BlackForestBytes/goext/exerr"
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"gogs.mikescher.com/BlackForestBytes/goext/langext"
"runtime/debug"
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"time"
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)
type PreContext struct {
ginCtx *gin.Context
wrapper *GinWrapper
uri any
query any
body any
form any
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header any
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timeout *time.Duration
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}
func (pctx *PreContext) URI(uri any) *PreContext {
pctx.uri = uri
return pctx
}
func (pctx *PreContext) Query(query any) *PreContext {
pctx.query = query
return pctx
}
func (pctx *PreContext) Body(body any) *PreContext {
pctx.body = body
return pctx
}
func (pctx *PreContext) Form(form any) *PreContext {
pctx.form = form
return pctx
}
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func (pctx *PreContext) Header(header any) *PreContext {
pctx.header = header
return pctx
}
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func (pctx *PreContext) WithTimeout(to time.Duration) *PreContext {
pctx.timeout = &to
return pctx
}
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func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
if pctx.uri != nil {
if err := pctx.ginCtx.ShouldBindUri(pctx.uri); err != nil {
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err = exerr.Wrap(err, "Failed to read uri").
WithType(exerr.TypeBindFailURI).
Str("struct_type", fmt.Sprintf("%T", pctx.uri)).
Build()
return nil, nil, langext.Ptr(Error(err))
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}
}
if pctx.query != nil {
if err := pctx.ginCtx.ShouldBindQuery(pctx.query); err != nil {
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err = exerr.Wrap(err, "Failed to read query").
WithType(exerr.TypeBindFailQuery).
Str("struct_type", fmt.Sprintf("%T", pctx.query)).
Build()
return nil, nil, langext.Ptr(Error(err))
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}
}
if pctx.body != nil {
if pctx.ginCtx.ContentType() == "application/json" {
if err := pctx.ginCtx.ShouldBindJSON(pctx.body); err != nil {
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err = exerr.Wrap(err, "Failed to read json-body").
WithType(exerr.TypeBindFailJSON).
Str("struct_type", fmt.Sprintf("%T", pctx.body)).
Build()
return nil, nil, langext.Ptr(Error(err))
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}
} else {
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err := exerr.New(exerr.TypeBindFailJSON, "missing JSON body").
Str("struct_type", fmt.Sprintf("%T", pctx.body)).
Build()
return nil, nil, langext.Ptr(Error(err))
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}
}
if pctx.form != nil {
if pctx.ginCtx.ContentType() == "multipart/form-data" {
if err := pctx.ginCtx.ShouldBindWith(pctx.form, binding.Form); err != nil {
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err = exerr.Wrap(err, "Failed to read multipart-form").
WithType(exerr.TypeBindFailFormData).
Str("struct_type", fmt.Sprintf("%T", pctx.form)).
Build()
return nil, nil, langext.Ptr(Error(err))
}
} else if pctx.ginCtx.ContentType() == "application/x-www-form-urlencoded" {
if err := pctx.ginCtx.ShouldBindWith(pctx.form, binding.Form); err != nil {
err = exerr.Wrap(err, "Failed to read urlencoded-form").
WithType(exerr.TypeBindFailFormData).
Str("struct_type", fmt.Sprintf("%T", pctx.form)).
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Build()
return nil, nil, langext.Ptr(Error(err))
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}
} else {
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err := exerr.New(exerr.TypeBindFailFormData, "missing form body").
Str("struct_type", fmt.Sprintf("%T", pctx.form)).
Build()
return nil, nil, langext.Ptr(Error(err))
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}
}
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if pctx.header != nil {
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if err := pctx.ginCtx.ShouldBindHeader(pctx.header); err != nil {
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err = exerr.Wrap(err, "Failed to read header").
WithType(exerr.TypeBindFailHeader).
Str("struct_type", fmt.Sprintf("%T", pctx.query)).
Build()
return nil, nil, langext.Ptr(Error(err))
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}
}
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ictx, cancel := context.WithTimeout(context.Background(), langext.Coalesce(pctx.timeout, pctx.wrapper.requestTimeout))
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actx := CreateAppContext(pctx.ginCtx, ictx, cancel)
return actx, pctx.ginCtx, nil
}
func callPanicSafe(fn WHandlerFunc, pctx PreContext) (res HTTPResponse, stackTrace string, panicObj any) {
defer func() {
if rec := recover(); rec != nil {
res = nil
stackTrace = string(debug.Stack())
panicObj = rec
}
}()
res = fn(pctx)
return res, "", nil
}