Add images

app/go.mod

@@ -19,7 +19,7 @@ require (
 	go.osspkg.com/goppy/console v0.1.2
 	go.osspkg.com/goppy/env v0.1.2
 	go.osspkg.com/goppy/errors v0.1.2
-	go.osspkg.com/goppy/iofile v0.1.6
+	go.osspkg.com/goppy/iofile v0.1.7
 	go.osspkg.com/goppy/iosync v0.1.5
 	go.osspkg.com/goppy/syscall v0.1.3
 	go.osspkg.com/goppy/xc v0.1.1

app/go.sum

@@ -8,7 +8,7 @@ github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
 github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
+github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 go.osspkg.com/algorithms v1.3.1 h1:Weh0Z4dMzHFRJTfMva/mU6Uk95wSRGwt1Saj2sfz3Wc=
 go.osspkg.com/algorithms v1.3.1/go.mod h1:kj+oVK7UDQlXMKleMTYzbEEpUAXC2tzRBtki7F5EbXc=

auth/go.sum

@@ -15,8 +15,8 @@ github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0
 github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
-go.osspkg.com/goppy/syscall v0.1.2 h1:g1qvlqHPBSDkF0un3gC2hpBqHZJfq9uwhSjmNRxbj0c=
-go.osspkg.com/goppy/syscall v0.1.2/go.mod h1:8MsNFOYAzNzGI6FE+0hmqLINQ5cxVkhqHUyirzENG9A=
+go.osspkg.com/goppy/syscall v0.1.3 h1:22P17r+oBbHuSKWjhayfjTZlcDcOPFqu1TrSLrMzeMA=
+go.osspkg.com/goppy/syscall v0.1.3/go.mod h1:8MsNFOYAzNzGI6FE+0hmqLINQ5cxVkhqHUyirzENG9A=
 go.osspkg.com/static v1.4.0 h1:2uy4/11c0QP+QLMucKQZbAU+e6lhVHKw5dWJPTk/DBg=
 go.osspkg.com/static v1.4.0/go.mod h1:94YydVU3qUtb1J534486lpm+qg6CviQjqtxKlkpSppM=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=

examples/go.mod

@@ -37,26 +37,26 @@ replace (
 )
 
 require (
-	go.osspkg.com/goppy v0.15.14
-	go.osspkg.com/goppy/app v0.1.10
-	go.osspkg.com/goppy/auth v0.1.0
-	go.osspkg.com/goppy/console v0.1.1
-	go.osspkg.com/goppy/geoip v0.1.0
+	go.osspkg.com/goppy v0.0.0-00010101000000-000000000000
+	go.osspkg.com/goppy/app v0.1.11
+	go.osspkg.com/goppy/auth v0.0.0-00010101000000-000000000000
+	go.osspkg.com/goppy/console v0.1.2
+	go.osspkg.com/goppy/geoip v0.0.0-00010101000000-000000000000
 	go.osspkg.com/goppy/iosync v0.1.5
 	go.osspkg.com/goppy/metrics v0.0.0-00010101000000-000000000000
-	go.osspkg.com/goppy/ormmysql v0.1.0
-	go.osspkg.com/goppy/ormpgsql v0.1.0
-	go.osspkg.com/goppy/ormsqlite v0.1.0
+	go.osspkg.com/goppy/ormmysql v0.0.0-00010101000000-000000000000
+	go.osspkg.com/goppy/ormpgsql v0.0.0-00010101000000-000000000000
+	go.osspkg.com/goppy/ormsqlite v0.0.0-00010101000000-000000000000
 	go.osspkg.com/goppy/plugins v0.1.2
-	go.osspkg.com/goppy/routine v0.1.5
-	go.osspkg.com/goppy/syscall v0.1.2
-	go.osspkg.com/goppy/tcp v0.0.4
-	go.osspkg.com/goppy/udp v0.0.2
-	go.osspkg.com/goppy/unixsocket v0.1.0
-	go.osspkg.com/goppy/web v0.1.10
-	go.osspkg.com/goppy/ws v0.1.0
+	go.osspkg.com/goppy/routine v0.1.6
+	go.osspkg.com/goppy/syscall v0.1.3
+	go.osspkg.com/goppy/tcp v0.0.0-00010101000000-000000000000
+	go.osspkg.com/goppy/udp v0.0.0-00010101000000-000000000000
+	go.osspkg.com/goppy/unixsocket v0.0.0-00010101000000-000000000000
+	go.osspkg.com/goppy/web v0.1.11
+	go.osspkg.com/goppy/ws v0.0.0-00010101000000-000000000000
 	go.osspkg.com/goppy/xc v0.1.1
-	go.osspkg.com/goppy/xdns v0.1.0
+	go.osspkg.com/goppy/xdns v0.0.0-00010101000000-000000000000
 	go.osspkg.com/goppy/xlog v0.1.7
 )
 
@@ -81,15 +81,15 @@ require (
 	github.com/prometheus/common v0.45.0 // indirect
 	github.com/prometheus/procfs v0.12.0 // indirect
 	go.osspkg.com/algorithms v1.3.1 // indirect
-	go.osspkg.com/goppy/encryption v0.1.5 // indirect
-	go.osspkg.com/goppy/env v0.1.1 // indirect
-	go.osspkg.com/goppy/errors v0.1.1 // indirect
-	go.osspkg.com/goppy/iofile v0.1.5 // indirect
-	go.osspkg.com/goppy/ioutil v0.1.2 // indirect
-	go.osspkg.com/goppy/orm v0.1.7 // indirect
+	go.osspkg.com/goppy/encryption v0.1.6 // indirect
+	go.osspkg.com/goppy/env v0.1.2 // indirect
+	go.osspkg.com/goppy/errors v0.1.2 // indirect
+	go.osspkg.com/goppy/iofile v0.1.6 // indirect
+	go.osspkg.com/goppy/ioutil v0.1.3 // indirect
+	go.osspkg.com/goppy/orm v0.1.8 // indirect
 	go.osspkg.com/goppy/random v0.1.2 // indirect
-	go.osspkg.com/goppy/sqlcommon v0.1.7 // indirect
-	go.osspkg.com/goppy/xnet v0.1.2 // indirect
+	go.osspkg.com/goppy/sqlcommon v0.1.8 // indirect
+	go.osspkg.com/goppy/xnet v0.1.3 // indirect
 	go.osspkg.com/static v1.4.0 // indirect
 	golang.org/x/mod v0.12.0 // indirect
 	golang.org/x/net v0.20.0 // indirect

examples/go.sum

@@ -44,7 +44,7 @@ github.com/prometheus/common v0.45.0 h1:2BGz0eBc2hdMDLnO/8n0jeB3oPrt2D08CekT0lne
 github.com/prometheus/common v0.45.0/go.mod h1:YJmSTw9BoKxJplESWWxlbyttQR4uaEcGyv9MZjVOJsY=
 github.com/prometheus/procfs v0.12.0 h1:jluTpSng7V9hY0O2R9DzzJHYb2xULk9VTR1V1R/k6Bo=
 github.com/prometheus/procfs v0.12.0/go.mod h1:pcuDEFsWDnvcgNzo4EEweacyhjeA9Zk3cnaOZAZEfOo=
-github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
+github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 go.osspkg.com/algorithms v1.3.1 h1:Weh0Z4dMzHFRJTfMva/mU6Uk95wSRGwt1Saj2sfz3Wc=
 go.osspkg.com/algorithms v1.3.1/go.mod h1:kj+oVK7UDQlXMKleMTYzbEEpUAXC2tzRBtki7F5EbXc=

go.mod

@@ -17,11 +17,11 @@ replace (
 )
 
 require (
-	go.osspkg.com/goppy/app v0.1.11
+	go.osspkg.com/goppy/app v0.1.12
 	go.osspkg.com/goppy/console v0.1.2
 	go.osspkg.com/goppy/env v0.1.2
 	go.osspkg.com/goppy/errors v0.1.2
-	go.osspkg.com/goppy/iofile v0.1.6
+	go.osspkg.com/goppy/iofile v0.1.7
 	go.osspkg.com/goppy/plugins v0.1.2
 	go.osspkg.com/goppy/xlog v0.1.7
 	gopkg.in/yaml.v3 v3.0.1

go.sum

@@ -6,7 +6,7 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
 github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
+github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 go.osspkg.com/algorithms v1.3.1 h1:Weh0Z4dMzHFRJTfMva/mU6Uk95wSRGwt1Saj2sfz3Wc=
 go.osspkg.com/algorithms v1.3.1/go.mod h1:kj+oVK7UDQlXMKleMTYzbEEpUAXC2tzRBtki7F5EbXc=

go.work

@@ -13,6 +13,7 @@ use (
 	./errors
 	./examples
 	./geoip
+	./graphics
 	./iofile
 	./iosync
 	./ioutil

go.work.sum

@@ -25,10 +25,7 @@ github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnr
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/julienschmidt/httprouter v1.3.0 h1:U0609e9tgbseu3rBINet9P48AI/D3oJs4dN7jwJOQ1U=
 github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=
-github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pty v1.1.1 h1:VkoXIwSboBpnk99O/KFauAEILuNHv5DVFKZMBN/gUgw=
-github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
@@ -37,40 +34,18 @@ github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f h1:KUppIJq7/+
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e h1:aoZm08cpOy4WuID//EZDgcC4zIxODThtZNPirFr42+A=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.5.0 h1:1zr/of2m5FGMsad5YfcqgdqdWrIhu+EBEJRhR1U7z/c=
-github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/xhit/go-str2duration/v2 v2.1.0 h1:lxklc02Drh6ynqX+DdPyp5pCKLUQpRT8bp8Ydu2Bstc=
 github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtXVyJfNt1+BlmyAsU=
 github.com/yuin/goldmark v1.4.13 h1:fVcFKWvrslecOb/tg+Cc05dkeYx540o0FuFt3nUVDoE=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.opencensus.io v0.24.0 h1:y73uSU6J157QMP2kn2r30vwW1A2W2WFwSCGnAVxeaD0=
 go.opencensus.io v0.24.0/go.mod h1:vNK8G9p7aAivkbmorf4v+7Hgx+Zs0yY+0fOtgBfjQKo=
-golang.org/x/crypto v0.16.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
-golang.org/x/crypto v0.18.0/go.mod h1:R0j02AL6hcrfOiy9T4ZYp/rcWeMxM3L6QYxlOuEG1mg=
-golang.org/x/mod v0.8.0 h1:LUYupSeNrTNCGzR/hVBk2NHZO4hXcVaW1k4Qx7rjPx8=
-golang.org/x/mod v0.9.0 h1:KENHtAZL2y3NLMYZeHY9DW8HW8V+kQyJsY/V9JlKvCs=
-golang.org/x/mod v0.9.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
-golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
-golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
-golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sync v0.4.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/term v0.13.0 h1:bb+I9cTfFazGW51MZqBVmZy7+JEJMouUHTUSKVQLBek=
-golang.org/x/term v0.13.0/go.mod h1:LTmsnFJwVN6bCy1rVCoS+qHT1HhALEFxKncY3WNNh4U=
-golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
-golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
 golang.org/x/term v0.16.0 h1:m+B6fahuftsE9qjo0VWp2FW0mB3MTJvR0BaMQrq0pmE=
 golang.org/x/term v0.16.0/go.mod h1:yn7UURbUtPyrVJPGPq404EukNFxcm/foM+bV/bfcDsY=
-golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
-golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e h1:FDhOuMEY4JVRztM/gsbk+IKUQ8kj74bxZrgw87eMMVc=
-golang.org/x/tools v0.1.12 h1:VveCTK38A2rkS8ZqFY25HIDFscX5X9OoEhJd3quQmXU=
-golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.6.0 h1:BOw41kyTf3PuCW1pVQf8+Cyg8pMlkYB1oo9iJ6D/lKM=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 google.golang.org/api v0.126.0 h1:q4GJq+cAdMAC7XP7njvQ4tvohGLiSlytuL4BQxbIZ+o=
 google.golang.org/api v0.126.0/go.mod h1:mBwVAtz+87bEN6CbA1GtZPDOqY2R5ONPqJeIlvyo4Aw=
@@ -82,7 +57,5 @@ google.golang.org/genproto/googleapis/rpc v0.0.0-20230530153820-e85fd2cbaebc h1:
 google.golang.org/genproto/googleapis/rpc v0.0.0-20230530153820-e85fd2cbaebc/go.mod h1:66JfowdXAEgad5O9NnYcsNPLCPZJD++2L9X0PCMODrA=
 google.golang.org/grpc v1.55.0 h1:3Oj82/tFSCeUrRTg/5E/7d/W5A1tj6Ky1ABAuZuv5ag=
 google.golang.org/grpc v1.55.0/go.mod h1:iYEXKGkEBhg1PjZQvoYEVPTDkHo1/bjTnfwTeGONTY8=
-google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=

graphics/go.mod

@@ -0,0 +1,15 @@
+module go.osspkg.com/goppy/graphics
+
+go 1.18
+
+replace (
+	go.osspkg.com/goppy/errors => ../errors
+	go.osspkg.com/goppy/syscall => ../syscall
+)
+
+require (
+	go.osspkg.com/goppy/errors v0.1.2
+	golang.org/x/image v0.15.0
+)
+
+require go.osspkg.com/goppy/syscall v0.1.3 // indirect

graphics/go.sum

@@ -0,0 +1,2 @@
+golang.org/x/image v0.15.0 h1:kOELfmgrmJlw4Cdb7g/QGuB3CvDrXbqEIww/pNtNBm8=
+golang.org/x/image v0.15.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=

graphics/images.go

@@ -0,0 +1,184 @@
+/*
+ *  Copyright (c) 2023 Mikhail Knyazhev <[email protected]>. All rights reserved.
+ *  Use of this source code is governed by a BSD-3-Clause license that can be found in the LICENSE file.
+ */
+
+package graphics
+
+import (
+	"crypto/sha1"
+	"fmt"
+	"image"
+	"image/jpeg"
+	"image/png"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+
+	"go.osspkg.com/goppy/errors"
+	"golang.org/x/image/bmp"
+	"golang.org/x/image/draw"
+	"golang.org/x/image/tiff"
+	"golang.org/x/image/webp"
+)
+
+var (
+	ExtNotSupported = errors.New("ext is not supported")
+)
+
+type (
+	ImageScale struct {
+		folder string
+		cache  map[string]ImageInfo
+		mux    sync.Mutex
+	}
+
+	ImageInfo struct {
+		Hash   string
+		Origin string
+		Scale  string
+		Thumb  string
+	}
+)
+
+var decoders = map[string]func(r io.Reader) (image.Image, error){
+	".jpg":  jpeg.Decode,
+	".jpeg": jpeg.Decode,
+	".png":  png.Decode,
+	".webp": webp.Decode,
+	".bmp":  bmp.Decode,
+	".tiff": tiff.Decode,
+}
+
+func NewImageScale() *ImageScale {
+	return &ImageScale{
+		folder: "",
+		cache:  make(map[string]ImageInfo, 100),
+	}
+}
+
+func (v *ImageScale) SetFolder(dir string) error {
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		return fmt.Errorf("create image folder: %w", err)
+	}
+	v.folder = dir
+	return nil
+}
+
+func (v *ImageScale) Build(filename string, scale, thumb int) (*ImageInfo, error) {
+	var err error
+	img := &ImageInfo{}
+
+	if img.Hash, err = v.getHash(filename); err != nil {
+		return nil, err
+	}
+
+	v.mux.Lock()
+	i, ok := v.cache[img.Hash]
+	v.mux.Unlock()
+	if ok {
+		return &i, nil
+	}
+
+	if img.Origin, err = v.resize(filename, img.Hash+".orig", 0); err != nil {
+		return nil, err
+	}
+	if img.Scale, err = v.resize(filename, img.Hash+".scale", scale); err != nil {
+		return nil, err
+	}
+	if img.Thumb, err = v.resize(filename, img.Hash+".thumb", thumb); err != nil {
+		return nil, err
+	}
+
+	v.mux.Lock()
+	v.cache[img.Hash] = *img
+	v.mux.Unlock()
+
+	return img, nil
+}
+
+func (v *ImageScale) resize(filename, suffix string, width int) (string, error) {
+	src, name, err := v.readFile(filename)
+	if err != nil {
+		return "", err
+	}
+	x, y := v.scaleFactor(src.Bounds().Max.X, src.Bounds().Max.Y, width)
+	dst := image.NewNRGBA(image.Rect(0, 0, x, y))
+	draw.CatmullRom.Scale(dst, dst.Rect, src, src.Bounds(), draw.Over, nil)
+	newFilename := fmt.Sprintf("%s-%s.png", name, suffix)
+	return newFilename, v.writeFile(v.folder+"/"+newFilename, dst)
+}
+
+func (v *ImageScale) scaleFactor(oW, oH, width int) (int, int) {
+	if width == 0 {
+		return oW, oH
+	}
+	oWF, oHF := float64(oW), float64(oH)
+	nWidth := float64(width)
+	scale := oWF / nWidth
+	return int(oWF / scale), int(oHF / scale)
+}
+
+func (v *ImageScale) writeFile(filename string, img image.Image) error {
+	file, err := os.Create(filename)
+	if err != nil {
+		return fmt.Errorf("write image `%s`: %w", filename, err)
+	}
+	if err = png.Encode(file, img); err != nil {
+		return errors.Wrap(
+			fmt.Errorf("encode image `%s`: %w", filename, err),
+			file.Close(),
+		)
+	}
+	return file.Close()
+}
+
+func (v *ImageScale) readFile(filename string) (image.Image, string, error) {
+	ext := filepath.Ext(filename)
+	dec, ok := decoders[ext]
+	if !ok {
+		return nil, "", ExtNotSupported
+	}
+	file, err := os.Open(filename)
+	if err != nil {
+		return nil, "", fmt.Errorf("read image `%s`: %w", filename, err)
+	}
+	img, err := dec(file)
+	if err != nil {
+		return nil, "", errors.Wrap(
+			fmt.Errorf("decode image `%s`: %w", filename, err),
+			file.Close(),
+		)
+	}
+	fi, err := file.Stat()
+	if err != nil {
+		return nil, "", errors.Wrap(
+			fmt.Errorf("info image `%s`: %w", filename, err),
+			file.Close(),
+		)
+	}
+	if err = file.Close(); err != nil {
+		return nil, "", fmt.Errorf("close image `%s`: %w", filename, err)
+	}
+	return img, strings.Replace(fi.Name(), ext, "", 1), nil
+}
+
+func (v *ImageScale) getHash(filename string) (string, error) {
+	file, err := os.Open(filename)
+	if err != nil {
+		return "", fmt.Errorf("read image `%s`: %w", filename, err)
+	}
+	h := sha1.New()
+	if _, err = io.Copy(h, file); err != nil {
+		return "", errors.Wrap(
+			fmt.Errorf("calc hash image `%s`: %w", filename, err),
+			file.Close(),
+		)
+	}
+	if err = file.Close(); err != nil {
+		return "", fmt.Errorf("close image `%s`: %w", filename, err)
+	}
+	return fmt.Sprintf("%x", h.Sum(nil)), nil
+}